TWI339057B - Transmit diversity processing for a multi-antenna communication system - Google Patents
Transmit diversity processing for a multi-antenna communication system Download PDFInfo
- Publication number
- TWI339057B TWI339057B TW092129817A TW92129817A TWI339057B TW I339057 B TWI339057 B TW I339057B TW 092129817 A TW092129817 A TW 092129817A TW 92129817 A TW92129817 A TW 92129817A TW I339057 B TWI339057 B TW I339057B
- Authority
- TW
- Taiwan
- Prior art keywords
- data
- symbols
- symbol
- sub
- transmitted
- Prior art date
Links
- 238000012545 processing Methods 0.000 title claims description 33
- 238000004891 communication Methods 0.000 title claims description 24
- 238000000034 method Methods 0.000 claims description 56
- 230000005540 biological transmission Effects 0.000 claims description 48
- 238000012546 transfer Methods 0.000 claims description 48
- 239000013598 vector Substances 0.000 claims description 35
- 230000015556 catabolic process Effects 0.000 claims description 23
- 238000013507 mapping Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims 3
- 241000287107 Passer Species 0.000 claims 1
- 241000894007 species Species 0.000 claims 1
- 239000000872 buffer Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 9
- 125000004122 cyclic group Chemical group 0.000 description 8
- 230000000295 complement effect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 241000282376 Panthera tigris Species 0.000 description 4
- 238000010606 normalization Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0067—Rate matching
- H04L1/0068—Rate matching by puncturing
- H04L1/0069—Puncturing patterns
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03343—Arrangements at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Radio Transmission System (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Error Detection And Correction (AREA)
- Mobile Radio Communication Systems (AREA)
Description
1339057 玖、發明說明: 【發明所屬之技術領域】 根據35美國法典§119節之優先權 本專利申請案主張對轉讓給本文之受讓人之臨時專利_ 請案序列第60/42 1,309號的優先權,該申請案係於2〇02年1〇 月25曰申請,標題為「多重輸入多重輸出(ΜΙΜΟ)無線區域 網路(WLAN)系統」,其經引用併入本文。 領域 本發明一般係關於通信,更明確而言,係關於多重天線 通信系統内之傳遞多元化的資料處理技術。 【先前技術】 多重天線通信系統利用多重(Ντ)傳遞天線及一或多個 (NR)接收天線進行資料傳送。藉由自該等天線傳遞獨立之 資料流’可使用Ντ個傳遞天線提高系統之輸出量。藉由自 該等天線冗餘地傳遞單一資料流,也可使用Ντ個傳遞天線 提高可靠性。 ^重天線系統也可利用正交分頻多工技術(〇rth〇g〇nai frequency division multiplexing ; OFDM)。OFDM係一調變 技術’可將整個系統之頻寬有效地劃分成多個(Nf)正交子 頻帶。各子頻帶係與可使用資料調變之個別之子載子相關 聯。子頻帶通常也稱為音頻' 子載子、位元及頻率通道。 對於多重天線系統,各對傳遞與接收天線之間存在一傳 播路徑。因而在NT傳遞天線與]^接收天線之間即可形成 NT.NR個傳播路徑《該等傳播路徑可能經受不同之通道條件
〇\88\88997 D0C 1339057 (如不同的衰落、多路徑及干擾效果),因而可能實現不同的 4。號對雜訊及干擾比(signal-to-noise-and-interfe renceratios ; SNR)。因此,NT.NR個傳播路徑之通道回應可 旎隨路徑不同而不同。對於分散之通信通道,所有NF子頻 帶之各傳播路徑的通道回應也不同。因通道條件可隨時間 變化’故傳播路徑之通道回應也可同樣變化。 傳遞多元化係指透過空間、頻率、時間或該三維之組合 冗餘地傳送資料,以提高資料傳送之可靠性。傳遞多元化 的係在盡可月b夕之維度上使資料傳送之多元化最大 化以貫現強固性能。另一目的係簡化發射器與接收器之傳 遞多:化處理。因此’需要能為多重天線系統中之傳遞多 元化南效處理資料的技術。 【發明内容】 本文提L在對重天線〇FDM系統中實施傳遞多元化處理 之技#。發射器根據編碼方案編碼流量資料以獲取編石馬資 料。編碼方案可包括旧 ' ^ 口疋逮率基本編碼與系統支持之編碼 率組的重複及/或螌φ η 編碼之資料以獲取交錯資料 军乂錯所 付唬映射交錯資料 支万案 OFDM符號大小 持夕個 η 進效率。不同OFDM符號大小可使 同或類似的編碼、交 便用相 器之處理。 ^及調邊方案’以簡化發射器與接收 發射器處理每— ,供 式。 自-對傳遞天線傳、、广 以獲得兩對傳遞夠 逆。各傳遞符號係資料符號之一
〇 \88\88997 〇〇C 1339057 可自(1)空間-時間傳遞多元化(space_time transmit diversity ; STTD)之兩個0FDM符號週期之同一子頻帶上之 天線對或(2)空間-頻率傳遞多元化(space_frequency transmit diversity ; SFTD)之同—〇FDM符號週期内之兩個 子頻帶之天線對傳送該兩對傳遞符號。若有Ντ個傳遞天線 可用於資料傳送,則不同天線對]^1_.(]^1__1)/2可用於傳送資 料符號流。發射器根據選定之〇FD]y^^號大小為各傳遞天線 傳迗(如實施OFDM調變)傳遞符號流,以獲取傳遞天線之對 應的OFDM符號流。 如下所述,接收器則實施互補處理以恢復流量資料。在 以下進一步詳細說明本發明的多個方面及具體實施例。 【實施方式】 在此使用的術語「範例性」指「作為一範例、實例或說 明」。在此况明的作為任一「範例性」的具體實施例不必解 釋為較佳具體實施例或優於其他具體實施例。 本文說明之傳遞多元化技術可用於(丨)具有多重傳遞天 線及單一接收天線之多重輸入單一輸出(multiple input single-output; MISO)系統與(2)具有多重傳遞天線及多重接 收天線的多重輸入多重輸出 mukiple-output ; ΜΙΜΟ)系統。該等技術也可用於下行鏈路 及上行鏈路。下行鏈路(即正向鏈路)係自接取點(如基地台) 至使用者終端(如行動台)的通信鏈路,而上行鏈路(即反向 鏈路)係自使用者終端至接取點的通信鏈路。為簡明起見, 僅在使用Ο F D Μ的範例性多重天線系統中說明下行鏈路之
O:\88\88997 D0C 1339057 該等技術。對於該範例性系統,接取點係配備四個天線, 各使用者終端配備一或多個天線。 圖1顯示多重天線OFDM系統1 〇〇之接取點丨丨〇與兩個使用 者終端150x與150y之具體實施例的方塊圖。使用者終端 150x係裝備一單一天線丨52x,使用者終端15〇y係裝備多重 天線1 5 2 a至1 5 2 r。 在下行鏈路上,傳遞(τχ)資料處理器120於接取點11〇接 收來自資料源1 1 2的流1資料(即資訊位元),控制來自控制 器130的資.料及可能來自排程器134的其他資料。各種類型 的資料可在不同傳輸通道上發送。τχ資料處理器12〇根據 一或多個編碼與調變方案處理(成框、攪亂、編碼、交錯及 符號映射)不同類型的資料’以獲取調變符號流。在本文 中,「資料符號」指資料的調變符號,「先導符號」指先導 之調變符號。ΤΧ空間處理器i 22接收ΤΧ資料處理器1 20的資 料符號流’為傳遞多元化而對該等資料符號實施空間處 理、多工先導符號’並為各傳遞天線提供一傳遞符號流。 以下說明TX資料處理器1 20及TX空間處理器1 22的處理。 各調變器(MOD) 1 26接收並處理相應傳遞符號流’以獲取 OFDM符號流,並進一步調節(如放大、濾波及升頻)〇fdm 符號流以產生下行鏈路信號。來自四個調變器丨26&至丨26d 的四個下行鏈路信號係分別自四個天線丨2 8 a至1 2 8 d傳送至 使用者終端。 在各使用者終端1 50 ’ 一或多重天線1 52接收所傳送之下 行鏈路信號,各天線向各自的解調變器(DEMOD) 154提供
0 \88\88997 OOC -10· 1339057 妾收的號。各解調變器1 5 4所實施之處理係於調變器 1 26貝把處理之互補,並提供接收符號流。接收⑽)空間處
理器160對自所有解調變器154接收的符號流實施空間處 以獲取恢復之貧料符號流,其係接取點丨1 〇傳送之資料 符號流的估計。Rx資料處理器17〇接收並所恢復的資料符 號JL解夕工至其各自的傳輸通道。然後處理(如解映射、解 又錯、解碼及解㈣)各傳輸通道之恢復資料符號以獲取該 傳輸通道之解碼請。各傳輸通道之解碼資料可包括所恢 復之使用者貝_、控制資料等等,其可提供至資料槽1 Μ 儲存及/或提供至控制器180進行進一步處理。
―在各使用者終端150中,通道估計器(圖1未顯示)估計下 订鍵路之E7應並提供通道料,料通道料可包括通道 增&(或路徑增益)估計、㈣估計等。RX資料處理器170還 可提供於下行鏈路所接收之各封包/訊框之狀態。控制器 接收通道估汁及封包/訊框狀態,並為接取點m组裝回 饋資訊。回饋資訊及上行鏈路資料由τχ資料處理器190處 =’並由ΤΧ空間處理器192(若使用者終端15〇有的話)進行 空間處理’使用先導符號多工化,由一或多個調變器154 調節,並透過-或多個天線152傳送至接取點11〇。 在接取點11〇,所傳送之上行鏈路信號係由天線128接 收,由解調變器解調變,由RX空間處理器14〇arx資料 處理器142以互補使料終端15()之處理的方式進行處理。 所恢復之回饋資訊係提供至控制器130及排程器134。排程 裔13何使用回饋資訊實施數個功能,如⑴為下賴路及上
0 \88\88997 DOC 1339057 行鏈路上之資料傳送排程使用者終端組及⑺為所排程之終 端分配可用之下行鏈路與上行鏈路資源。 &制為130與180分別控制接取點11〇及使用者終端15〇之 各種處理單元之運作°例如’控制器180可決定使用者終端 150之下行鏈路可支持的最大速率。控制器⑽可選擇各排 ί王使用者終端之速率、#包承載大小及〇fdm符號大小。 接取點11 0與使用者終端1 5 〇之上行鏈路處理可與下行鏈 路的處理相同或不同。 系、’充1 0 0矛]用組傳輸通道傳遞不同類型的資料。在範例 性叹at中,在上行鏈路上,接取點11 0在一廣播通道 (broadcast channe丨;BCH)上傳送系統資訊,控制正向控制 通道(forward Contr〇i channe丨;FCCH)上的資料並於正向 通道(forward channel ; FCH)上向特定使用者終端傳輸資 料。在上行鏈路,使用者終端15〇在隨機接取通道(rand〇m access channel ; RACH)上傳送接取資料及訊息,並在反向 通道(reVersec channe丨;RCH)上傳送資料。其他系統設計可 使用不同及/或其他傳輸通道。傳遞多元化可用於各傳輸通 道。 圖2顯示接取點丨1〇之發射器部分之方塊圖。在τχ資料處 理1§ 120内,例如,藉由產生一循環冗餘檢查(qdk redundancy check; CRC)值並為封包附加標題,成框單元2 i 2 成框各資料封包。接收器可使用CRC值決定封包之解碼是 否正確。可為某些傳輸通道實施成框,其他傳輪通道則可 省略。不同傳輸通道的成框也可不同。各封包係在特定時
0 \88\88997 CK)C •12· 1339057 間期間内(如一 碼、調變及指定 資料隨機化。 或多個〇軸符?虎週期)為傳送 。搜亂器214㈣成框/未成框資 而分別編 料,以使 碼益叫根據編碼方案編碼攪亂 該編碼可增加該資料傳送的可靠度。然後 穿早心18重複或擊穿(即刪除)某些編瑪位元 包的預期編碼率。在—具體實施例中,編碼器216係= 率捲積編碼器。重複各編碼位元—次可獲取Μ編碼 碼器2丨⑭刪除某些編碼位元可獲得大於Μ的編 。父錯益220根據交錯方案交錯(即重新排序)重複/擊穿 早元218的編碼位元。交錯為編碼位元提供時間、頻率及/ 或空間多元化。 一符號映射單元222根據一選定調變方案映射交錯資 料,並提供資料符號。符號映射可由如下方法實現若 B21,群集B位元組以形成B_位元二進制值,及〇將各b_ 位元二進制值映射至對應於選定調變方案的一單一分佈。 各映射信號點係一複數值,並對應於資料符號。符號映射 單元222向TX空間處理器122提供資料符號流。 以下說明編碼器216、重複/擊穿單元218、交錯器22〇及 符號映射單元222的範例性設計。可根據控制器1 3 〇提供的 控制信號實施編碼、交錯及符號映射。 如下所述,TX空間處理器1 22接收TX資料處理器i 2〇的資 料符號流,並為傳遞多元化貫施空間處理。τχ空間處理巧 122為四個傳遞天線向丨263至126d之四個調變器各提供—
O:\88\88997 DOC -13- 1339057 傳遞符號流。 圖3顯示為系統貫施基本編碼之編碼器2 1 6之具體實施 例。在該具體實施例中,基本編碼係1/2速率、約束長度 7(K-7)之捲積編碼,具有產生器133與171(八進制)。 在編碼器2 16内,多工器312自攪亂器214接收各封包之已 攪亂的位元及尾部位元(如零)’並提供首先由六個尾部位元 跟隨的已搜亂的位元。編碼器216也包括串聯耦合之六個延 遲元件314a至314f。四個加法器316a至316d也係串聯耦 合,用於實施第一產生器(133)。同樣,四個加法器318a至 318d也係串聯耦合,用於實施苐二產生器(171)。如圖3所 示,加法器係進一步耦合至延遲元件314,以實施兩個產生 器 133與 171。 攪亂位το係提供至第一延遲元件314a及加法器316&與 318a。對於各時脈週期,加法器316a至316d實施進入位元 與儲存於延遲元件3I4b、314c、314e與314f的四個先行位 兀的modulo-2加法,以獲取該時脈週期的第—編碼位元。 同樣,加法器3 1 8a至3 1 8d實施進入位元與儲存於延遲元件 314b、314c' 3 14e與3l4f的四個先行位元的m〇du丨〇_2加法, 以獲取該時脈週期的第二編碼位元。多工器32〇接收兩個產 生器的兩個編碼位元流,並將其多工成單一編碼位元流。 對於各攪亂位元qn(其中n係位元指數),產生兩個編碼位元 C I η與c2n ’其導致1 /2編碼率。 系統100支持資料傳送之一组「速率」。表1列出系統支持 的14速率範例組,由速率指數0至13表示n為㈣速率 Ο \88\88997 〇〇〇 •14· 1339057 係表示零資料速率(即無資料傳送)。夂非—± μ 谷非零速率係與實現非 衰落AWGN通道之理想性能水準(如〗。7 a七 Ν + (如1°/。的封包誤差率 (packet e而⑽;PER))所需的特定頻譜效率、特定編碼 率、特定調變方案及特定SNR關聯。料效率指由系統頻 寬標準化的資料速率(即資訊位元速率),以每秒每❼似之 率的頻譜效率係由該速率的編碼方案與調變方案決定。表i 之各速率的編碼方案與調變方案係、特定於範例系統的。 表1 -
ί表1中’BPSKU二進制相移密繪’QPSK表示正交相移 也錄,QAM表示正交振幅調變。 編碼器川編瑪各封包,並根據單—基本編碼產生Μ速 。扁馬位兀。系統支持的所有其他編碼率(如表^之列示)可
0 \88\88997 DOC -15· 1339057 藉由重複或擊穿編碼位元獲得。 圖4顯示重複/擊穿單元218之具體實施例’其可用於根據 1/2基本編碼率產生各種編碼率。在重複/擊穿單元218内, 編碼器216的1/2速率編碼位元係提供至重複單元412或擊 穿早το 414。重複單元412對各丨/2速率編碼位元各重複一次 以獲仔有效之1/4編碼率。擊穿單元414根據特定擊穿圖案 刪除某些1 /2速率編碼位元以獲得所需之編碼率。表2列示 ;系’·先支持之編碼率的範例性擊穿圖案。也可使用其 他擊穿圖案》 ~ 編碼率· 擊穿圖案 1/2" ΓΓ~ 7/12 11111110111110 3 / S 1110111011 2/3 1110 3/4 111001 ' 5/6 1110011001 7/8 1110101001100Ϊ 對於k/n編碼率,每_kf訊位元具有打編媽位元。μ速率 基本編碼為每訊位元提㈣1/2速率編碼位元。為獲 得編碼率k/n,擊穿單元218為自編碼器216收到之各以Μ 速率編碼位元輸人群組輸出η編碼位元。因此,即從各2k 1/2 速率編碼位元群組刪除2k_n編碼位元,以獲知速率k/n編碼 在擊穿圖案中’將自各群組刪除的編碼位元係由零 表示。例如’如擊穿圖案「⑴1U1川iug」所示為獲得 川2之編碼率’需從編碍器216之各群_編碼位元中刪除 兩個編碼位元,刪除的位㈣群組中的以與第Μ位元。若 〇 \88\88997 D〇〇 -16 - 1339057 所需編碼率為1/2即無需實施擊穿。 多工器416接收重複單元412的編碼位元流與擊穿單元 川的編碼位元流。若所需編碼率為1/4,則多工器川提供 f複單元412的編碼位元,若所需編碼率為"2或更高’則 提供擊穿單元4丨4的編碼位元。 — k輯早7〇 4 1 8接收編碼控制 益為擊穿單元414產生擊穿控制,為多工器416 工哭 控制。 °° 也可使用上述m卜之其L馬方案與擊穿圖案,這屬於 本發明之範圍。例如’可使用Turb〇碼、低密度奇偶校驗檢 查(low density parity check ; LDPC)碼、區塊碼、某些其他 碼或上述碼之任何組合編媽資料。而且’不同的傳輪通道 可使用不同的編碼方案。例如,捲積碼可用於載送系統資 Λ與控制資料的傳輸通道,丁urb〇碼可用於載送流量資料的 傳輸通道。 ’ 藉由上述編碼與擊穿方案,透過在接取點之同—編碼器 與在使用者終端之同一編碼器可支持多編碼率。因而可2 大簡化接取點與使用者終端的設計。 系統100利用兩個0FDM符號大小實現更高效率。在—範 例性設計中,一「短」0FD]vui號係由64個子頻帶組成,一 長」OFDM符號係由256個子頻帶組成。對於短符 號,64個子頻帶之分配指數為-32至+31,48個子頻帶(如护 數為KS=±{1’ .·.,6, 8, ,2〇, 22, ,26}之頻帶)係用於資料 傳送,並稱為資料子頻帶,4個子頻帶(如指數為±丨7, 2丨丨之 子頻帶)係用於先導傳送,不使用DC子頻帶(指數為〇之頻
0 \88\88997 〇〇C 17 1339057 帶)’其餘的子頻帶也不使用,並當作防護子頻帶。對於長 OFDM符號’ 256個子頻帶之分配指數為·128至+ 127, I” 個子頻帶(如指數為KL = ±{1,...,24,29,,8〇,85,,i叫之 頻帶)係用於資料傳送,16個子頻帶(如指數為士⑺,Μ 81,…,84}之子頻帶)係用於先導傳送,不使用dc子頻帶, 其餘的子頻帶也不使用,並當作防護子頻帶。 長OFDM符號的先導與資料子頻帶可根據以下等式映射 至短OFDM符號的先導與資料子頻帶: 等式(1) k, = 4-ks -sgn(ks).kos » 其中ks係短OFDM符號之子頻帶的指數 kos係子頻帶指數偏移(k。#丨〇,1,2,3 Η sgn(ks)提供ks之標號(即「+」或「_」); Μ係長OFDM符號之子頻帶的指數e &) 短OFDM符號之各資料/先導子頻帶係與長〇FDM符號之四 個資料/先導子頻帶關聯,後者與子頻帶指數偏移之四個 值關聯。 表1還列出各非零速率之可於各短與長〇{7]〇]^符號中發 送之資料位元數目。可使用任何數目之長〇FDM符號與小數 目之短OFDM符號發送資料封包。例如,可使用Nl|〇fdm 符號與Ns短OFDM符號發送資料封包,其中N^〇且 3之Ns20。在NL長OFDM符號末端之Ny^〇FDM符號可減少未 使用之容量。因而,可使用不同大小之〇FDM符號以使 OFDM符號的資料載送容量更好地匹配封包承載,從而最大 化封包效率。 0 \88\88997 DOC •18· 1339057 在一具體實施例中,同一交錯方案用於短與長〇F£)m符 號。各短OFDM符號中將傳送之編碼位元係在所有48個資料 子頻可中父錯。各長OFDM符號中將傳送之編碼位元係分隔 成四個區塊,各區塊中的編碼位元係於各自的4 8資料子頻 T群組中父錯。對於二者而言,交錯均係在一 〇FDM符號週 期霄施。 圖4還顯示交錯器220的具體實施例’其可用於短與長 OFDM符號。在交錯器22〇中,解多工器422為各〇fdm符號 接收重複/擊穿單元21 8的編碼位元序列。編碼位元序列表 示為{ci},其中對於短〇FDM符號,丨£{〇,…,,對 於長OFDM指’ ie{G,..·,,B為各調變符號之編 碼位元數目。 對於短OFDM#《,多工器422向區塊交錯器424a提供序 ^之所有48韻碼位元。然後,交錯H424根據表3之頻率 父錯方案,交錯(即重新排序)短〇fdm符號之所有W資料子 頻帶的編碼位元。對於該交錯方案,序列⑹中的各編碼位 凡的分配位S指數為im()dulQ_48e序列中之編媽位元係有效 地分割成B群組,各群組包括分配位元指數為〇至7的a個編 碼位元。各位元指數與各自資料子頻帶關聯。同一位元指 數,所有編碼位元均於與該位元指數關聯之資料子頻帶上 侈1如’各群組之第一編碼位元(位元指數為0)係於子 上上傳送’第:編碼位元(位元指數為丨)係於子頻帶1 、兵达’第三編碼位元(位元指數為2)係於子頻帶_17上傳 、依人類推。在交錯整個序列之編碼位元後,區塊交錯 〇 \88\88997 〇〇c -19- 1339057 器424a向多工器426提供交錯位元。對於短〇fdM符號,不 使用區塊交錯器424b、424c與424 d,.多工器426僅提供來自 區塊交錯器424a的交錯位元。 表3 子頻 帶指 數ks 位元 指數 子頻 帶指 數ks 位元 指數 子_頻 帶指 數ks 位元 指數 子頻 帶指 數^ 位元 指數 - - -13 26 1 1 15 33 -26 0 -12 32 2 7 16 39 -25 ~~~6~~ -11 38 3 13 17 45 -24 12 -10 44 4 19 18 5 -23 18 -9 4 5 25 19 11 -22 \24~ -8 Γ 10 6 31 20 17 -21 -7 - 7 21 -20 30 -6 「16 8 37 22 23 -19 36 -5 22 9 43 23 29 -18 42 -4 28 10 3 24 35 -17 2 -3 34 11 9 25 41 -16 8 -2 40 12 15 26 47 -15 14 -1 46 13 21 • -14 20 0 - 14 27 - - 對於長OFDM符號,解多工器422向區塊交錯器424a提供 序列中之48.B編碼位元第一區塊,向區塊交錯器42朴提供 48·Β編碼位元第二區塊,向區塊交錯器424c提供48B編碼 位το第三區塊,向區塊交錯器424d提供48.B編碼位元之最 後區塊。交錯器424a至424d之四個編碼位元區塊之分配子 頻可才曰數偏移分別為kos = 〇、1、2與3。各區塊交錯器424以 上述方法為短OFDM符號在48資料子頻帶交錯其編碼位 元。在交錯整個序列之編碼位元後,多工器426接受區塊交 錯器424a至424d的交錯位元,並以合適順序將該等位元映 射至長OFDM符號之對應子頻帶。具體而言,如等式(〖)所 Ο \88\88997 DOC -20- 1339057 示,各區塊交錯器424之短OFDM符號子頻帶指數匕與子頻 帶指數偏移係用於產生對應之長〇FDM符號子頻帶指數 ki。邏輯單元428接受控制器13〇的〇?〇1^符號大小,並為解 多工器422及多工器426產生控制。 圖4顯示通道交錯器22〇之範例性設計。也可使用能夠支 持短與長OFDM符號的其他設計。例如,可使用交錯器儲存 將交錯之所有編碼位元。然後,多工器426或解多工器化 將該交錯器的編碼位元映射至合適之子頻帶。 表3顯示.之頻率交錯方案將具有偶數指數(在擊穿後)編 碼位元分配至具有負指數之子頻帶,將具有奇數指數的編 碼位元分配至具有正指數的子頻帶。對於1/2編碼率,第一 產生器133之編瑪位元係於具有負指數之子頻帶上傳送第 一產生器171之編碼位元係於具有正指數之子頻帶上傳 送。也可攪亂編碼位元’使各產生器之編碼位元分佈於所 有資料子頻帶。 可以各種其他方式實施交錯。例如,在交錯所有資料 頻帶後,可在多個_符號週期内進一步交錯各子頻帶 編碼位元以實現時間多元化。 對於短與長OFDM符號,交铒^ > 叮恥乂錯窃220為各〇FDM符號提 父錯編碼位元序列。序列#紅 一 ㈣^括各資料子頻帶之B交錯編碼 22根據選定速率決 之調文方案將交錯編碼位元 •7 m 映射至資料符號。 表4顯示系統支持之六個調 # 支方案的付唬映射。對於各. 复方案(BPSK除外),Β/2編碼 位70係映射至同相⑴成份,: 0 \88\88997 〇〇〇 -21 · 丄 他B/2編碼位元係映射至正 φ夂蛾古安 乂(⑺成仏。在一具體實施例 ^ x __上 糸根據格雷映射定義。藉由格 雷映射’ ίέ號分佈(在I盘〇志/八 — 1 成份中)中之鄰近點僅相差一位 元位置。格雷映射減少可能性釦 此性較大之錯誤事項的位元誤差 數目,該數目對應於映射至靠近正砝 非处止確位置之一位置的接收 符號,在此情形下,僅可能錯誤偵測_個編碼位元。 BPSK b〇 I Q 0 -1 0 1 1 0 QPSK b〇 I bi Q ~0 ] -1 0 -1 1 1 1 nr 1 6 OAM b〇b, I b7bi Q 00 -3 00 -3 01 -1 01 1 -1 11 1 11 1 10 3 10 3 64 OAM b〇bi I b^b4t>5 Q 000 -7 000 -7 001 -5 001 -5 Oil Λ -J Oil -3 010 -1 010 -1 110 1 110 1 1 111 3 111 3 101 5 101 5 100 7 100 7 表4 ----256 OAM Pp b ί 〇2 〇3^ I b4b5b6b7 ----- 〇 4 0000 -15 0000 - 0001 -13 0001 -—_! -13 0011 1 -11 0011 -1 1 0010 0010 -9 0110 -7 0110 0111 -5 0111 -5 0101 -3 0101 -3 0100 -1 0100 -1 1100 1 1100 1 1101 3 1101 3 1111 5 1111 5 1110 7 1110 7 1010 9 1010 9 1011 11 1011 ITPj 1001 13 1001 1000 15 1000 15~~ 才示準化因子 調變方案 數值 BPSK 1.0 QPSK 1/V2 — 16 QAM l/Vio 64 QAM Ι/λ/42 256 QAM Ι/λ/170 對於表4顯示的四個Q AM調變方案之各方案,最不可能錯 〇\W\SS9<)7 OQC ·τι· 1339057 誤接收各元件最左邊之位元’而最可能錯誤接收各元件最 右邊的位7G。為實現各位元位置之同等錯誤可能性,可搜 亂組成各QAM符號之B位元。&舉實際等於在qam符號之 各維度實施交錯’使形成qam符號之編碼位元映射至qam 符號之不同位元位置。 表4顯示之各調變方案之1與Q值係由一標準化因子 縮放,使關聯信號分佈之所有信號點之平均功率等於和諧 值。表4顯示各調變方案之標準化因子。標準化因子之量化 值也可使用。各資料子頻帶之資料符號s(k)將具有以下形 式: s(k)=(I+jQ).Kmod, 其中k e Ks用於短OFDM符號 等式(2) keKL用於長OFDM符號; I與Q係表4中選定調變方案之值;以及
Km()d取決於選定調變方案。 糸統1 00賞施空間處理以實現二維之傳遞多元化。在一具 體實施例中.,系統100(1)以每一子頻帶及每一 0FDM符號對 為基礎貫施空間-時間傳遞多元化(Space_time transmit diversity ; STTD),以為短0FDM符號實現空間與時間多元 化及(2)以每一子頻帶對與每一 ofdm符號為基礎實施空間 -頻率傳遞多元化(space-frequency transmit diversity ; SFTD) ’以實現長OFDM符號的空間與頻率多元化。 短OFDM符號之一範例性STTd方案運作如下。假定,要 於特定子頻帶上傳送兩個資料符號,分別表示為Si與S2。接
J
O:\88\88997 D0C -23- 1339057 示複共扼’「」表示轉置。 旦 ^ - OFDM- ^ « 。里匕括兩個傳遞符號,將 隹UFDM付唬週期自兩個 〇卿符號週期自兩個μ 向量玉係於第一 …自兩個天線傳送,向 號週期自兩個天唆㈣、L T 0FDM^
饵啼、S #口推, 谷貝枓符遽係於兩個OFDM 符唬週期傳送(傳遞符號 绩值…# “ M_M週期自一天 線傳达,傳遞符號.係 傳送)。 就w於下—〇職符號週期自另一天線 若使用者終端配備一輩_ $ A Qt
天線,則所接收之符號可表示 如下: 。4 π I 等式(3) η = h,s, + h2s2 + η, > ^ r2 = ~ ^2S\ + n2 9 其中’ r·,與1*2係兩個連續0FDM符號週期之兩 係相關子頻帶之自㈣傳遞天線至接收天^路 徑增益;以及 η 1與η?分別係接收符號r i與Q的雜訊 使用者了導出兩個資料符號~與&之估計如下 i1 = V;-^ = ^i+J^Wv^W2,2 W2+N2w ν2· W2+hl2 "'ΐΐΜ^Γ 及 專式(4) 或者,接取點可產生兩個向量& _5;]r與心=[〜, 並在兩個OFDM符號週期依次傳該兩個向量。使用者終端可 導出兩個資料符號之估計為|i=Wr|+v;)/a與 幺 ,其中 α,ΐΉ2。 以上說明可延用於具有兩個或更多傳遞天線、多個接收 0 \88\88997 〇〇〇 •24- 1339057 天線及—多個子頻帶的系統。各資料子頻帶使用兩個傳遞天 線。假疋,要於特定子頻帶k上傳送兩個資料符號,分別表 不為S丨(k)與s2(k) β接取點產生 rj 里 = ί,(々)]Γ 盥 ’或同等地,產生兩個符號电 刚咖與吵)}=⑽一侧。各符號,组包括兩個傳 遞符號,將於兩個◦圈符號週期自各自天線於子頻帶k上 依次傳送(即’符號組⑽}係於兩個0FDM符號週期内自天 線i於子頻帶k上傳送,符號組⑽}係於同—之兩個0應 符號週期内自天線j於子頻帶k上傳送)。 若使用者終端配備多個天線,則所接收之符號可表示如 下: 【养柳州+M^)+幽,及 等式(5) r2 (k) = ht {k)s[ (k) - h] (k)s^ (k) + n2 (k) > 其中GWand 〇㈨係使用者終端於子頻帶k上於兩個連續 OFDM符號週期接收的兩個符號向量,各向量包括接收 天線的NR接收符號; 色⑷與匕⑷分別係傳遞天線i與」·對於子頻帶k的路獲增益 向量’各向量包括自關聯傳遞天線至各>^接收天線的通道 增益;以及 &⑷與&⑷分別係兩個所接收符號向量ii〇t)與匕⑷的雜訊 向量。 使用者終端可導出兩個資料符號Sl(k)與S2(k)的估計如 下: 0 \88\88997 DOC -25- h (ΙΛ i U iL·、 ) 2 Λ 2 久 .-,2 A 2 一 气(、允)+ 二 ~ y , 76 JM 幻卜 Ml |M、IMf 州-nUk 成(k) h(k)\h(k)2 -sM^r{; ^-% 等式(6) -人)h,k) h,(k) +^(d 或者,接取點可產生兩個符號組i W,(幻切與 /㈧-(、⑷彳㈨} ’並自天線丨與』傳遞該等符號組。使用者終 〇導出兩個資料付號之估計為&(幻=^(々)^⑷+^(幻&⑽μ 與= ‘处2(幻-"(从㈣Μ,其中々 = p,(幻|2+||£W||2。 STTD方案為各資料子頻帶利用一對傳遞天線。若接取點 配備兩個傳遞天線,則兩個天線均用於短〇FDM符號的所有 48個資料子頻帶。若接取點配備四個傳遞天線,則各天線 用於48個資料子頻帶之半數。 表5列出短OFDM符號之STTD方案的範例性子頻帶天線分 配方案。 表5 子頻 帶指 數1^ 傳遞 天線 子頻 帶指 數ks 傳遞 天線 子頻 帶指 數ks 傳遞 天線 子頻 帶指 數1^ 傳遞 天線 - - -13 _Μ__ 1 3,4 15 -ΤΤ- -26 1,2 -12 __Μ__ 2 1,2 16 ~χτ^ -25 3,4 -11 _Μ__ 3 2,4 17 1,3 -24 1,3 -10 __2Λ^ 4 1,3 18 2,3 -23 2,4 -9 _Μ__ 5 Γ 2,3 19 1 1,4 -22 1 1,4 -8 _^3__ 6 1,4 120~~ 3,4 -21 - Γ~^7~~ - 7 - ΓΤϊ~~ -20 2,3 -6 1,2一 8 3,4 22 1,2 -19 1,2 -5 _Μ__ 9 1,2 23 2,4 -18 3,4 -4 _1ι1- 10 2,4 24 1,3 -17 1,3 -3 _Μ___ 11 1,3 25 2,3 -16 2,4 -2 1,4 12 2,3 26 1,4 -15 1,4 -1 13 ~1,4 ----— -14 2,3 0 - 14 3,4 - - 0\88\88997.DOC -26· 1339057 圖5說明表5顯示的子頻帶天線分配方案。對於該方案, 傳遞天線1與2係用於指數為卜26、_i9、_13、6、2Y9m、5’、 22}的子頻帶,傳遞天線3與4係用於指數為卜。、-a、]]、 5 1 8、14、2〇}的子頻帶,依次類推。四個傳遞天線可 有六組不同的天線配對。六組天線配對之各配對係用於8 個資料子頻帶,該等子頻帶在48個資料頻帶内係大約均勻 間隔。子頻帶分配之天線配對係使不同天線用於鄰近之子 頻▼,因而可提供更大的頻率與空間多元化。例如,天線1 與2係用於子頻帶_26 ’天線3與4係用於子頻帶_2s。 表5之天線子頻帶分配也使所有四個傳遞天線均用於最 低編碼率1/4之各編碼位元,因而最大化空間多元化。對於 編碼率1/4,各編碼位元係重複並於映射至兩個非連接天線 對的兩個子頻帶上發送,從而使所有四個天線均用於傳送 該編碼位元。例如,表3顯示的位元指數〇與丨對應於同—重 複編瑪位元,具有指數〇之編碼位元係於子頻帶_26上自天 線1與2傳送,具有指數丨之編碼位元係於子頻帶丨上自天線3 與4傳送。 ’ 長〇FDM符號約為短OFDM符號週期之四倍。為最小化處 理延遲及緩衝要求,空間頻率傳遞多元化係用於自兩個天 線同時於兩個子頻帶上傳送兩個長〇FDm符號。 長OFDM符號之—範例性SFTD方案運作如下。假定表示 為s(ki)與的兩個資料符號係產生並映射至長ofdm 符號的兩個鄰近子頻帶。接取點自子頻帶、上的兩個天線傳 送符號s(k|)與s(k|+1),並於子頻帶上自同兩個天線傳遞
〇\88\88W7DOC -27· 1339057 符號S*(kl+1)與^•(k!)。鄰近子頻帶係用於資料符號對,因 為假定兩個子頻帶之通道回應大約係恒定的。 下 今+sgn(A:,)l 4 若接取點配備兩個傳遞天線,則兩個天線均用於長 OFDM符號的所有i 92個資料子頻帶。若接取點配備四個傳 遞天線’則表5顯示之同一子頻帶天線分配方案也可用於長 OFDM符號。在此情形下,長〇FDM符號之指數匕的子頻帶 係首先映射至短OFDM符號之指數ks的對應子頻帶如 k.. 等式(7) 其中[Z]係提供z之最接近的小整數的現場操作者,以及 kos係長OFDM子頻帶指數k,的子頻帶指數偏移,(k()se{〇, 1, 2, 3}) 〇 對應於映射短0FDM符號子頻帶指數匕的天線對係根據表5 決定,並用於具有指數k!的長OFDM符號子頻帶。 對於SFTD方案,在使用者終端獲取兩個資料符號之估計 的處理可實施為等式(4)與(6)之所示。不過,計算係於兩個 子頻帶上獲得之所接收符號上實施而非於兩個〇FDM符號 週期内實施。 圖6顯示TX空間處理器122a的方塊圖,該處理器實施短 OFDM符號之STTD方案。TX空間處理器122a係圖iiTxs 間處理器1 22之一項具體實施例。 在TX空間處理器1 22a内,解多工器6 1 2接收τχ資料處理 器120之資料符號流(s(k)},並為短OFDM符號之48個資料 子頻帶將該資料符號流解多工成48個資料符號子流,並向 個別的空間時間編碼器620提供各子流。各子流包括各短
0\88\88997.DOC •28- 1339057 0FDM符號週期的一資料符?虎,其對應於^的符號速率, 其中TS係一短OFDM符號的週期。 在各空間時間編碼器620内,解多工器622解多工資料符 號:流成兩個符號序列’各序列具有一町,符號速率。第 一符唬序列係提供至開關628a與單元62讣的「〇」輸入,其 倒轉亚結合序列中之各符號。第二符號序列係、提供至開關 628b與早兀624&的r〇j輸入,其結合序列中之各符號。延 遲單元626a延遲單元624a之符號一個短〇FDIv^f號週期,並 向開關62 8_a之「1」輸入提供該等延遲符號。延遲單元α α 延遲單元624b之符號一個短OFDM符號週期,並向開關62扑 之「1 J輸入提供該等延遲符號。開關628a以短〇fdm符號 速率觸發,並為兩個OFDM符號週期之各週期之一傳遞天線 k么、符號且{'⑷卜以⑷〜⑷}。同樣,開關Μ化以短〇fdm符 號速率觸發,並為兩個0FDM符號週期之各週期之另一傳遞 天線提供符號組{&⑷卜丨&⑷⑷}。 緩衝/多工器630a至630d緩衝並多工化空間時間編碼 态620的傳遞符號。如表5之決定,各緩衝器/多工器63〇接 收相應空間時間編碼器6 2 〇的先導符號與傳遞符號。具體而 έ,緩衝器/多工器630a接受映射至天線1的所有子頻帶(如 子頻帶-26、-24 ' -22、-19等)的傳遞符號,緩衝器/多工器 630b接受映射至天線2的所有子頻帶(如子頻帶%、j]、 -20、-19等)的傳遞符號,緩衝器/多工器63〇c接受映射至天 線3的所有子頻帶(如子頻帶-25、-24、-20、-18等)的傳遞符 號,緩衝器/多工器630d接受映射至天線4的所有子頻帶(如
〇 \88\8SW7 DOC -29- 1339057 子頻页-25、-23、-22、_1 8等)的傳遞符號。 然後,各緩衝器/多工器63〇為各短〇{71)]^符號週期多工化 四個先導子頻帶的四個先導符號、24個資料子頻帶的24個 , 傳遞符號、36個未用子頻帶之36個零信號值(或零符號),以 开/成64個全部子頻帶的64傳遞符號序列。雖然短符號 有48個資料子頻帶,僅有24個子頻帶用於各傳遞天線之 STTD方案,因為各子頻帶僅使用兩個天線,因此,各天線. 之未用子頻帶的有效數目為36而非12。序列中的各傳遞符 號可為自塢碼器620的傳遞符號、先導符號或零符號,並於 $ 一短OFDM符號週期内在一子頻帶上發送。各緩衝器,多工 器63 0為傳遞天線提供傳遞符號流{X|(Jc)}。各傳遞符號流 匕括64個傳遞符號之連鎖序列,其中一序列各為符號 週期。 圖7顯不TX空間處理器丨22b的方塊圖,該處理器實施長 OFDM符號之SFTD方案。TX空間處理器mb係圖kTx空 間處理器122之另一項具體實施例。 j 在丁X空間處理器122b内,解多工器712接收τχ資料處理^ 器12〇之資料符號流{S(k)},並為長0FDM符號之192個資料 子頻帶將該資料符號流解多卫成192個資料符號子流,並向* 一對應之空間頻率編碼器720提供各對子流。各子流包括各 長OFDM符號週期的一資料符?虎,其對應於γ的符號速 率’其中叭係一長〇FDM符號的週期。 各空間頻率編碼器720為兩個子頻帶匕與叫接收一對資 料符號子流。在各編碼器720内’單元724a為子頻帶叫結 0 \88\88997 DOC -30- 1339057 。子w中的各符號,單元724b為子頻帶^倒轉並結合子流中 的各符號。各編媽器72G⑴為兩個關聯天線在子頻帶^上進 行傳送,提供兩個資料符號子流至兩個緩衝器/多工器 73〇’及(2)為在同兩個天線子頻帶^丨上進行傳送,提供來 自單元724a與724b的兩個子流。進出各空間頻率編碼器72〇 之所有子流的符號速率為尺-|。 如等式(7)與表5之決定,各緩衝器/多工器73〇接收相應空 間頻率編碼器72〇的先導符號與傳遞符號。具體而言,緩衝 器/多工器730a、730b、730c與730d為映射至天線i、2、3 與4的所有子頻帶分別接收傳遞符號。然後,各緩衝器/多 器730為各長OFDM符號週期多工化1 6個先導子頻帶的j 6 個先導符號、192個資料子頻帶的192個傳遞符號、48個未 用子頻帶之48個零符號,以形成256個全部子頻帶的256傳 遞符號序列。對於SFTD方案,所有192個資料子頻帶均用 於資料傳送。各緩衝器/多工器730為一傳遞天線提供傳遞 符號流{x;(k)}。 圖8顯示可用作圖}之1263至126d之各調變器之調變器 126x之具體實施例的方塊圖。調變器126x包括耦合至發射 器單元(transmitter unit ; TMTR)820之 OFDM調變器 81〇。 OFDM調變器810包括可變大小反轉快速富利葉(inverse fast Fourier transform ; IFFT)單元812及循環前置碼產生器 814。IFFT單元812接收傳遞符號流{Xi(k)},在流{Xi(k)}内 之L傳遞符號之各序列上實施l —點IFFT,並為變換符號提供 L時域碼片之對應序列。OFDM符號大小L係由控制器13〇提 0 \88\S8997 00C -3卜 1339057 供之控制信號指;^,對於短〇FDM符號,為l=64,對於長 FDM符號,為L = 256。循環前置碼產生器8丨4重複IFF丁單 元8 1 2之各轉換苻5虎之部分’以形成對應之符號。 OFDM付號週期對應於一⑽⑽符號的期@。循環前置碼產 生器8 1 4的輸出係具有由控制信號決定之大小的應符號 叫。發射器單元82〇將〇FDM符號流轉換成一或多個類比信 號,並進一步調節(如放大、濾波及升頻)類比信號以產生適. 於自關聯天線128x傳送之下行鏈路信號。 · 圖9顯不具有多重天線(Nr>1)之使用者終端㈣的方塊^ 圖。自接取點110的下行鏈路信號係由1523至152r的各天線 接收。各天線向各自的解調變器丨54提供所接收的信號。 在各解調變器154内,接收器單元(RCVR) 912調節(如降 頻、放大及濾波)並數位化其所接收的信號,並向 調變器提供樣本流^ 0FDM解調變器包括循環前置碼移除單 元914及可變大小快速富利葉轉換(&以]?〇111^1^1>扣玎。1^; FFT)單元916。單元914移除各〇FDM符號令的循環前置 # 碼,並提供包括L樣本之對應之所接收轉換符號,其中,l W 取決於OFDM符號大小。可變大小奸丁單元916接收單元914 , 的樣本流,為所接收的轉換符號對該流中的各L樣本序列實· 施L點FFT,並為轉換符號提供L接收符號的對應序列。解 調變器空間處理器丨6〇y提供^^流之接收 符號(用於資料)’向通道估計器96〇提供所接收的先導符號。 例如,如等式(6)所示,RX空間處理器16〇y利用通道估計 器960的通道增益估計對Nr流接收符號實施空間處理。 Ο \88\88997 DOC •32· 1339057 空間處理器1 60y向RX資料處理器丨7〇y提供恢復資料符號 流{纟⑷},這是接取點Π0傳送之資料符號流(s(k))之估計。
藉控制器1 80y提供的解調變控制之指示,在rx資料處理 器1 70y内’符號解咪射單元972根據用於資料流的調變方案 解調變恢復資料符號。藉控制器丨80y提供的解交錯控制之 指示,通道解交錯器974然後解交錯已解調變的資料,以互 補於接取點11 0實施的交錯。對於短〇Fdm符號,解交錯係 於各短OFDM符號之所有48個資料子頻帶上實施,互補上述 之交錯。也如上所述,對於長0FDM符號,解交錯係於48 個資料子頻帶之四個區塊的各區塊實施。然後,藉控制器 1 80y提供的解碼控制之指示,解碼器976解碼已解交錯的資 料,以互補於接取點110實施的編碼。Viterbi解碼器可用於 上述捲積編碼方案之解碼器976。解攪亂器978解攪亂解妈 資料,以互補於接取點110實施的攪亂。雖然圖9未顯示, 但CRC檢驗器可根據封包中包括的CRC值檢驗各封包,以 決定封包之接收是否正確。封包狀態可由使用者終端丨5〇y 用於啟動重新傳送接收有誤的封包。 通道估計器960根據所接收的先導符號估計各種通道特 性(如路徑增盈與雜訊變化)。如等式(6)所示,通道估計器 960向RX空間處理器丨6〇y提供各接取點天線之路徑增益估 計之向量△,(々),該空間處理器則使用該等路徑增益估計恢復 傳送之資料符號。通道估計器96〇還向控制器丨8〇)^提供通道 估計。控制器180y可於使用者終端15〇y實施與傳遞多元化 處理相關的各種功能。控制器丨8〇y還可根據通道估計及/或
0 \88\88997 D〇C -33- 1339057 其他考置選擇用於資料傳送之合適的速率與沉⑽符號大 /J、 〇 對於裝備單一天線152x的使用者終端150x,解調變器 154X提供—所接收符號流。RX空間處理器l60x利用通道增 益估計對接收符號流實施空間處理(如等式(4)所示),並^ 供恢復資料符號流’⑽}。然後,Rx資料處理器ΐ7〇χ按上 述使用者終端150y之方式符號解映射、解交錯、解碼及解、 授I恢復資料符號流。 為簡明起見,以上在範例性多重天線〇FDM系統中說日月| :下行鏈路之傳遞多元化處理技術。該等技術也可由配備 多重天線之使用者終端用於上行鏈路。同樣為簡明起見’ 僅說明OFDM系統之該等技術。〇FDM系統可支持一個 OFDM符號大小、兩個0FDM符號大小(如上所述),或兩個 以上的OFDM符號大小。該等技術中之許多技術也可用於單 一載子多重天線系統。 圖1 〇顯示於多重天線〇 F D Μ系統之發射器上實施傳遞多 元化處理之程序1000的流程圖。發射器根據編碼方案編碼# 抓i :貝料以獲取編碼資料(區塊丨〇〗2)。編碼方案可包括固定' 速率基本編碼與系統支持之編碼率組的重複及/或擊穿圖· 案組。然後,發射器根據交錯方案交錯所編碼之資料以獲 取交錯資料(區塊101 4)。接著,發射器根據調變方案符號映 射交錯資料以獲取資料符號流(區塊1〇丨6)。之後,發射器處 理各對資料符號,以獲得兩對傳遞符號,供自一對傳遞天 線傳送(區塊101 8)。各傳遞符號係資料符號之一形式。兩對 -34- 1339057 傳遽符號可自天線對於兩個OFDM符號週期或於兩個子頻 帶傳送。若有Ντ個傳遞天線可用於資料傳送,則不同天線 對Ντ·(Ντ-1)/2可用於傳送資料符號。若系統支持多個〇FDM 符號大小’則發射器根據選定之OFDM符號大小為各傳遞天 線轉換(如對其實施OFDM調變)傳遞符號流,以獲取傳遞天 線之對應OFDM符號流(區塊1 〇2〇)。 圖11顯示於多重天線OFDM系統之接收器上實施傳遞多 元化之資料接收之程序1100的流程圖。,接收器根 據選定之QFDM符號大小為Nr個接收天線之每個天線轉換 樣本流,以獲取該接收天線之對應所接收符號流(區塊 1112)。接收器獲得所接收符號之向量流,其中各向量包括 NR個天線的Nr個所接收符號,並係用於一個〇FDM符號週 期的一個子頻帶(區塊1114)。如等式(4)或(6)所示,接收器 以通道估計處理所接收符號的各對向量,以獲取兩個恢復 資料符號(區塊11 1 6) »兩個向量係用於STTD方案之兩個 OFDM符號週期及SFTD方案之兩個子頻帶。恢復資料符號 流係為所接收符號之向量流而獲得。然後,接收器根據解 調變方案符號解映射恢復資料符號流,以獲得解調變資料 (區塊111 8) ’根據解父錯方案解交錯資料以獲取解交錯資料 (區塊11 20) ’根據解碼方案解碼解交錯資料以獲取解碼資料 (區塊im)。解調變、解交錯及解碼方案均係分別用於發射 器之調變、交錯及編碼方案之互補。 本文中說明的傳遞多元化技術可藉由各種構件實施。舉 例而言’料技術可在硬體、軟體或其組合中實施。針對
0 \88\88997 OOC -35- 1339057 硬體實施,用以於各接取點及使用者終端實施傳遞多元化 處理的處理單元實施於一或多個特定應用積體電路 (application specific integrated circuits ; ASICs)、數位信號 處理器(digital signal processors ; DSPs)、數位信號處理元 件(digital signal processing devices ; DSPDs)、可程式邏輯 元件(programmable logi devices ; PLDs)、場可程式閉極陣 列(field programmable gate arrays ; FPGAs)、處理器、控制 器、微控制器、微處理器、其他設計來實施此處所述功能 的電子裝覃、或其組合。 針對軟體實施’該等處理技術可利用執行本文所說明之 功能的模組(例如,程式、函數等等)來實施。軟體編碼可儲 存於記憶體單元(如圖1之記憶體單元132、182x或182y)内, 由處理器執行(如控制器130、180x或18〇y)。記憶體單元可 實施在處理器内部或處理器外部,在此情況丁,記憶體單 元可經由技術中熟知的各種構件以通信方式耦合至處理 器。 月|j面對該尊已揭露之具體實施例所作的說明可讓熟習技 術者製造或利用本發明。熟悉技術者應明白該等具體實施 例可進订各種修改’而且在此定義的—般原理可應用於其 他具體實施例而不背離本發明之精神或範疇。因此,本發 明並不意味著受限於在此所示的該等具體實施例,而係符 合與在此揭示的該等原理及新賴特徵相一致的最廣範脅。 【圖式簡單說明】 …顯示多重天線0歷系統中的一接取點及兩個使用 〇 \88\88997 OOC -36- 1339057 者終端; 圖2顯示接取點的發射器部分; 圖3顯示一編碼器; 圖4顯示一重複/擊穿單元及一通道交錯器; 圖5顯示子頻帶天線分配方案; 圖6顯示STTD方案之傳遞(TX)空間處理器; 圖7顯示SFTD方案之TX空間處理器; 圖8顯示一調變器; 圖9顯示具有多重天線之使用者終端; ; 圖1 0顯示於發射器實施傳遞多元化處理之程序;以及 圖11顯示於接收器實施具有傳遞多元化之資料接收的程 序。 【圖式代表符號說明】 100 多重天線OFDM系統 110 接取點 112 資料源 120 TX資料處理器 122 TX空間處理器 130 控制器 132 記憶體單元 134 排程器 140 RX空間處理器 142 RX資料處理器 212 成框單元 0 \88\88997 DOC - 37 - 1339057 2 14 攪亂器 216 編碼Is 218 重複/擊穿單元 220 交錯器 222 符號映射單元 3 12 多工器 320 多工器 412 重複單元 414 . 擊穿單元 416 多工器 418 邏輯單元 422 解多工器 426 多工器 428 邏輯單元 612 解多工器 622 解多工器 712 解多工器 720 空間頻率編碼器 810 OFDM調變器 812 可變大小反轉快速富利葉單元 814 循環前置碼產生器 820 發射器單元 912 接收器單元 914 循環前置碼移除單元 Ο \8S\88997 DOC - 3 8 1339057 916 可變大小快速富利葉單元 972 符號解映射單元 974 通道解交錯器 976 解碼器 978 解攪亂器 1000 傳遞多元化處理程序 1100 傳遞多元化之資料接收程序 122a TX空間處理器 122b . TX空間處理器 126a-126d 調變器 128a-128d 天線 1 28x 天線 150x 使用者終端 150y 使用者終端 152a-152r 多重天線 152a-152r 多重天線 152x 天線 154a-154r 解調變器 154a-154r 解調變器 154x 解調變器 1 60x RX空間處理器 1 60y RX空間處理器 170x RX資料處理器 170y RX資料處理器 0、觀8997 DOC -39- 1339057 180x 180y 1 82x 182y 314a-314f 316a-316d 318a-318d 424a-424d 624a-624b 626a-626b 628a-628b 630a-630d 724a 724b 730a-730d 控制器 控制器 記憶體單元 記憶體單元 延遲元件 加法器 加法器 區塊交錯器 〇〇 一 早兀 延遲單元 開關 緩衝器/多工器 早兀 一 早兀 緩衝器/多工器 O \88\88997 DOC -40 -
Claims (1)
1339057 第092129817號專利申請案 中文申請專利範圍替換本(99年7月) 9%· h· Mmm 拾、申請專利範圍: ----」 1. 一種在一無線多重天線正交分頻多工(〇FDM)通信系統中 之傳送處理資料的方法,該方法包括: 根據一編碼方案編碼流量資料以獲取編碼資料; 根據一交錯方案交錯該等編碼資料以獲取交錯資料; 根據凋I方案付號映射該等交錯資料以獲取一資料 符號流; 自該資料符號流形成至少一對資料符號;以及 處理各對資料符號以獲取兩對傳遞符號供自一對天線 傳送’其中各傳遞符號係一資料符號之一形式,此外,其 中該兩對傳遞符號將在至少—0FDM子頻帶上傳送,且更 進-步中該OFDM通信系統可以調整指定子頻帶之總 數。 2.如申請專利範圍第!項之方法,其中各對資料符號之該兩 對傳遞符號係於兩個〇FDM符號週期内自一對天線於該 同一子頻帶上傳送。 如申請專利範圍第㈣之方法,其中各對資料符號之該兩 對傳遞符號係於—個〇聰符號週期内自—對天線於兩 個子頻帶上傳送。 4.如申:專利範圍第i項之方法其中若Me,Ντ個天線可 用於貝料傳送,Ντ.(Ντ_1 V2個不同對天線用於傳遞該流中 的資料符號對。 5. 如申請專利範圍第1項 資料傳送,其中不同對 之方法’其中複數個子頻帶係用於 天線係用於使用於資料傳送之鄰近 88997-990730.doc 1339057 子頻帶。 fMTI 6·如申請專利範圍第1項之方法,其中該系統支援具有s個子 頻帶之一第一 OFDM符號大小及具有L個子頻帶之一第二 OFDM符號大小,其中s係一大於一的整數,[係s之一整 數倍。 7.如申請專利範圍第6項之方法,其進一步包括: 為複數個天線形成複數個傳遞符號流;以及 根據該第一或第二OFDM符號大小轉換各傳遞符號流 以獲取一對應的OFDM符號流。 8_如申請專利範圍第〗項之方法,其中該編碼包括: 根據基本編碼來編碼該流量資料以於一固定編碼率 獲取編碼位元;以及 /該固定編碼率擊穿該等編碼位元以獲取於該系統支 援之複數個編碼率之—編碼率的編碼位元組成之該等編 碼資料。 9. 如申請專利範圍第8項之方法 碼率捲積編媽。 10. 如申請專利範圍第8項之方法 複數個擊穿圖案關聯。 11_如申請專利範圍第1項之 疋 八丨吨娜,a祜: 根據一基本編碼來編 獲取編碼位元;以及 里貝科以於-固定編碼 於該固定編碼率番 歿4等編碼位元以獲取 固定編碼率之編 ⑬取由低於 的蝙碼位兀組成的編碼資料。 其中該基本編碼係 1/2. 其中該等複數個編碼率 其中該編碼包括: 88997-990730.doc •2- 1339057 单月曰修正替- 12·如申請專利範圍第1項之方法,其中該交錯包括: 自該等編碼資料形成編碼位元序列,以及 根據該交錯方案為各該等序列,將該序列中之各編碼位 元映射至複數個子頻帶之一。 士申叫專利範圍第12項之方法,其中各編碼位元序列係指 疋於- OFDM符號週期内於該複數個子頻帶上傳送。 14_如申請專利範圍第㈣之方法,其中該交錯包括: 自該等編碼資料形成編碼位元序列, 若M^2,將各該等序列分隔成M區塊之編碼位元用於子 頻帶之Μ個非連接群組上傳送,其中一編碼位元區塊用於 各群組子頻帶,以及 對於各序列之Μ區塊之各區塊,根據該交錯方案映射該 區塊之各編碼位元至該區塊之該群組之該等子頻帶之一。 15. 如申請專利範圍第丨項之方法,其中該符號映射包括: 若Β21 ’群集該等交錯資料中之β位元組以形成β位元二 進制值,以及 根據該調變方案將各該等Β位元二進制值映射至一資料 符號,其中該調變方案係以格雷映射加以定義,使得在Β 位元中s玄調變方案之一信號分佈中之兩個鄰近資料符號 最多相差一個位元。 16. 如申請專利範圍第15項之方法,其中該符號映射進一步 包括: 為各該等組重新排序該等Β位元,其中該等重新排序之 Β位元組係用於形成該等β位元二進制值。 88997-990730.doc y\jj / y\jj / ..ΤΤΓ . 月日修正替換頁I 1 7. —種無線多重天線正办八此夕 .〜_, « ’ 刀頻夕工(0FDM)通信系統之發射 益’其包括: =碼S ’其^運作俾根據—編瑪方案來編碼流量資料 獲取已編竭的資料; 又錯益’其可運作俾根據一交錯方案來交錯該等編碼 負料以獲取交錯資料; —符號映射單t其可運作俾根據—調變方案來符號映 射β寺交錯資料以獲取—f料符號流;以及 ,、傳遞空間處理器,其可運作俾自該資料符號流形成至 ^對資料符號’以及處理各對f料符號以獲取兩對傳遞 符就供自-對天線傳送,其中各傳遞符號係一資料符號之 弋此外其中s亥兩對傳遞符號將在至少一 〇fdM子 頻π上傳送,且更進一步,其中該〇fdm通信系統可以調 整指定子頻帶之總數。 1 8.如申s月專利乾圍第丨7項之發射器,其中該傳遞空間處理器 。系可運作以貫轭空間_時間傳遞多元化並於兩個〇fDM符 號週期内為各對資料符號提供該兩對傳遞符號。 19·如申請專利範圍第17項之發射器其中該傳遞空間處理器 係運作以β鈿空間頻率傳遞多元化,並於兩個子頻帶上為 各對資料符號提供該兩對傳遞符號。 2〇.如申吻專利範圍第1 7項之發射器,其中該系統支援具有S 個子頻帶之一第一 OFDM符號大小與具有L個子頻帶之一 第二OFDM符號大小,其中s係一大於一的整數,匕係3的 —整數倍。 88997-990730.doc ,ϋ正替換頁 21‘如申請專利範圍第2〇項之發射器’其進一步包括: 用於複數個天線之複數個調變器,各調變器為一關聯天 線運作轉換一傳遞付號流以獲取該天線之一對應 符號流。 22. —種無線多重天線正交分頻多工(〇fdm)通信系統之裝 置,其包括: 用於根據一編碼方案來編碼流量資料以獲取編碼資料 之構件; 用於根據一交錯方案來交錯該等編碼資料以獲取交錯 資料之構件; 用於根據一調變方案來符號映射該等交錯資料以獲取 一資料符號流之構件; 用於自該貢料符號流形成至少一對資料符號之構件; 以及 用於處理各對資料符號以獲取兩對傳遞符號供自一對 天線傳送之構件,其中各傳遞符號係一資料符號之一形式 此外,其中戎兩對傳遞符號將在至少—子頻帶上 傳送,且更進一步,其中該〇]?1)1^通信系統可以調整指定 子頻帶之總數。 23. 如申請專利範圍第22項之裝置’其中各對資料符號之該兩 對傳遞符號係於兩個0FDM符號週期内自一對天線上傳 达。 如申《月專利|巳圍第22項之裝置,其中各對資料符號之該兩 對傳遞符號係自-對天線上於兩個子頻帶上傳送。 88997-990730.doc 1339057 年月日ί!正替換頁 25·如申:專利範圍第22項之裝置,#中該系統支援具有§個 子頻γ之第一0FDM符號大小與具有L個子頻帶之一第 二OFDM符號大小,其中s係一大於一的整數,Μ』的一 整數倍。 26. 如申請專利範圍第25項之裝置,其進一步包括: 用於為複數個天線形成複數個傳遞符號流之構件;以及
用於根據該第-或第二_M符號大小轉換各傳遞符 號流以獲取對應之OFDM符號流的構件。 27. —種在一無線多重天線正交分頻多工(〇fdm)通信系統中 之處理傳送資料的方法,該方法包括: 根據一編碼方案來編碼流量資料以獲取編碼資料; 根據一交錯方案來交錯該等編碼資料以獲取交錯資料; 根據一調變方案來符號映射該等交錯資料以獲取—資 料符號流; 自該資料符號流形成至少一對資料符號;以及 解多工該資料符號流,使各對資料符號係自—對天線傳 送’並且連續對資料符號係自不同對天線傳送,此外,其 中該兩對傳遞符號將在至少一 OFDNI子頻帶上傳送,且更 進一步,其中該OFDM通信系統可以調整指定子頻帶之總 數。 28. 如申請專利範圍第27項之方法,其中該解多工係進一步以 使該等編碼資料之各編碼位元根據該編碼位元之一編碼 率自該編碼位元可用之最大數目之天線傳送。 29. 如申請專利範圍第27項之方法,其中該OFDM通信系統實 88997-990730.doc -6 - 丄 丄 U. 0-0—— 年月日修正替換頁 施正交分頻多工(OFDM)。 30.如申請專利範圍第29項之方 一 號係自-對天線於—子 ’、“⑽之各對貧料符 料符號傳送,其中鄰近子頻帶之資 枓符戒對係自不同對天線上傳送。 3 1 ·如申請專利範圍第 方法,其中該等編碼資料之各群 數目扁馬位元係經過交錯’其中s係用於資料傳送之子頻帶 32·:種,多重天線正交分頻多工(〇FDM)通信系統中之 傳达處理資料的方法’該方法包括: 據編碼方案來編碼流量資料以獲取編碼資料; 根據-X錯方案來交錯該等編碼資料以獲取交錯資料; 根據"周隻方案來符號映射該等交錯資料以獲取一資 料符號流,· 貝 自°玄貝料符號流形成至少-對資料符號;以及 解夕工5亥資料符號流使該流中之各對資料符號係自— 對天線於兩個子頻帶上傳送,此外,其中該OFDM通信系 統可以調整指定子頻帶之總數。 … η·如申請專利範圍第32項之方法,其令該流中之各對資料符 號係於用於資料傳送之兩個鄰近子頻帶上傳送。 34·如申請專魏圍第吻之方法,其進_步包括: Λ μ中的各對資料符號以獲取第一與第二對傳遞 符號,各傳遞符號係該對資料符號令之資料符號之一的— :式’其中該第一對傳遞符號係自該對天線於-第一子頻 帶上傳送’該第二對傳遞符號係自該對天線於-第二子頻 88997-990730.doc 1339057 殆:· 7 . 3 0-- 帶傳送。 年月日修正替換 35. 如申請專利範圍第34項之方法,其中該等第一與第二對傳 遞符號係同時於一 0FDM符號週期内分別於該第一與第 二子頻帶上傳送。 36. 種在一無線多重天線正交分頻多工(〇FDM)通信系統中 之一接收器處理資料的方法,該方法包括: 獲取所接收之符號的向量流,各向量包括N個接收天線 之N個接收符號’其宁n為一或更大; 自該所接收之符號的向量流形成至少一對向量; 處理各對向量以獲取兩個恢復資料符號,其係兩個資料 符號之估計當作自兩個傳遞天線之兩對傳遞符號傳送,各 傳遞符號係一資料符號之.一形式,其中一已恢復資料符號 流係用於接收符號之該向量流而獲得’此外,其中該兩對 傳遞符號將在至少一 0FDM子頻帶上傳送,且更進一步, 其中該OFDM通信系統可以調整指定子頻帶之總數; 根據一解調變方案來符號解映射該已恢復資料符號流 以獲取解調變資料; 根據一解交錯方案來解交錯該等解調變資料以獲取解 交錯資料;以及 根據一解碼方案來解碼該等解交錯資料以獲取解碼資 料。 37·如申請專利範圍第36項之方法,其中接收符號之各對向量 係用於兩個OFDM符號週期。 38.如申請專利範圍第36項之方法,其中接收符號之各對向量 88997-990730.doc 1339057 係用於兩個子頻帶。 ---- 39·如申請專利_第36項之方法,其中該系統支援具有_ 子頻帶之一第一0FDM符號大小與具有L·個子頻帶之一第 二0FDM符號大小,其中S係—大於一的整數,L係S的一 整數倍。 4〇·如申請專利範圍第39項之方法,其進一步包括: 根據。玄第一或第二〇FDM符號大小為N個接收天線之各 天線轉換一樣本流,以獲取該接收天線之一對應已接收符 號机其中已接收符號之該向量流係自N個接收天線之N 個接收符號流獲得。 41. 如申請專利範圍第36項之方法,其中N=l並且各向量包括 一接收天線之一接收符號。 42. 如申印專利範圍第36項之方法其中並且各向量包括 多重接收天線之多個接收符號。 43. —種無線多重天線正交分頻多工(〇fdm)通信系統之接收 器,其包括: 一接收空間處理器,其可運作以接收已接收到的符號之 一向量流,且自該所接收之符號的向量流形成至少一對向 置,並處理各對向量以獲取兩個恢復資料符號,其係兩個 資料符號之估計當作自兩個傳遞天線之兩對傳遞符號傳 送,各傳遞符號係一資料符號之一形式,其令各向量包括 N個接收天線之N個已接收到的符號,其中N為一或更大, 其中一已恢復資料符號流係用於已接收的符號之該向量 k而獲仔此外,其中s亥兩對傳遞符號將在至少一 〇fdm 8S997-990730.doc -9- 1339057 、另·替換頁 子頻帶上傳送,且更進一步,其中該〇FDM通信系統可以 調整指定子頻帶之總數; 一符號解映射單元,其可運作以根據一解調變方案來符 號解映射該已恢復資料符號流以獲取解調變資料; 解又錯益,其可運作以根據一解交錯方案解交錯該等 解調變資料以獲取解交錯資料;以及 一解碼器,其可運作以根據一解碼方案來解碼該等解交 錯資料以獲取解碼資料。 44. 如申請專利範圍第43項之接收器,其令已接收的符號之各 對向量係用於兩個OFDM符號週期。 45. 如申請專利範圍第43項之接收器,其中已接收的符號之各 對向量係用於兩個子頻帶。 46. 如申請專利範圍第43項之接收器,其中該系統支援具有s 個子頻帶之一第一OFDM符號大小與具有L個子頻帶之一 第二OFDM符號大小,其中s係一大於一的整數,[係5的 ^ 一整數倍。 47. 如申請專利範圍第46項之接收器,其進一步包括: 該N個接收天線之N個解調變器,各解調變器可運作以 根據該第一或第二0FDM符號大小為一關聯接收天線轉 換一樣本流以獲取該接收天線之一對應已接收的符號流 ,其中已接收的符號之該向量流係自該N個接收天線之N 個接收符號流獲得。 48. —種無線多重天線正交分頻多工(〇FDM)通信系統之裝 置,其包括: 88997-990730.doc -10- 1339057 用於獲取接收之符號的一向量流之错此々 里抓之構件,各向量包括N 個接收天線之N個接收符號,其中N為—或更大; 用於自該所接收之符號的向量流形成至少—對向直之 構件; 用於處理各對向量以獲取兩個恢復資料符號之構件該 等已恢復資料符號係兩個資料符號之估計#作自兩個傳 遞天線之兩對傳遞符號傳送,各傳遞符號係一資料符號之 -形式,其中-恢復資料符號流係、為接收符號之該向量流 而獲得,此外,其中該兩對傳遞符號將在 頻帶上傳送,且更進-步,盆"_子 乂 /、肀5亥OFDM通信系統可以調 整指定子頻帶之總數; 用於根據-解調變方案來符號解映射該已恢復資料符 號流以獲取解調變資料之構件; 用於根據一解交錯方案來解交錯該等 取解交錯資料之構件;以及 抖以獲 用於根據-解碼方案來解石馬該等解交錯資料以獲取解 碼資料之構件。 49.如申請專利範圍第48項之裝置,其中接收符號之各對向量 係用於兩個OFDM符號週期。 5〇·如申請專利範圍第48項之褒置,其中接收符號之各對向量 係用於兩個子頻帶。 Η•如申請專利範圍第48項之裝置,$中㈣統支援具有㈣ 子頻帶之—第一0FDM符號大小與具有L個子頻帶之一第 一 OFDM符旎大小’其中8係_大於一的整數,[係呂的— 88997-990730.doc iy^ V. -JiJ- 年月日修正替換頁I 整數倍。 52.如申請專利範圍第51項之裝置其進一步包括: 用於根據該第一或第二OFDM符號大小為N個接收天線 之各天線轉換一樣本流以獲取該接收天線之一對應接收 符號流之構件,其中接收符號之該向量流係自接收天 線之N個接收符號流獲取。
88997-990730.doc 12·
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42130902P | 2002-10-25 | 2002-10-25 | |
US10/674,038 US7002900B2 (en) | 2002-10-25 | 2003-09-29 | Transmit diversity processing for a multi-antenna communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200417214A TW200417214A (en) | 2004-09-01 |
TWI339057B true TWI339057B (en) | 2011-03-11 |
Family
ID=32110318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW092129817A TWI339057B (en) | 2002-10-25 | 2003-10-27 | Transmit diversity processing for a multi-antenna communication system |
Country Status (14)
Country | Link |
---|---|
US (3) | US7002900B2 (zh) |
EP (1) | EP1556983B1 (zh) |
JP (2) | JP4739952B2 (zh) |
KR (1) | KR101073331B1 (zh) |
CN (1) | CN1717889B (zh) |
AU (2) | AU2003284943C1 (zh) |
BR (1) | BRPI0315520B1 (zh) |
CA (1) | CA2501449C (zh) |
HK (1) | HK1086123A1 (zh) |
IL (1) | IL167572A (zh) |
MX (1) | MXPA05004194A (zh) |
TW (1) | TWI339057B (zh) |
UA (1) | UA83473C2 (zh) |
WO (1) | WO2004038987A2 (zh) |
Families Citing this family (244)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7952511B1 (en) | 1999-04-07 | 2011-05-31 | Geer James L | Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns |
US9130810B2 (en) | 2000-09-13 | 2015-09-08 | Qualcomm Incorporated | OFDM communications methods and apparatus |
US7295509B2 (en) | 2000-09-13 | 2007-11-13 | Qualcomm, Incorporated | Signaling method in an OFDM multiple access system |
US7577085B1 (en) | 2002-06-03 | 2009-08-18 | Marvell International Ltd. | Multicarrier transmit diversity |
US7349438B2 (en) * | 2002-09-17 | 2008-03-25 | Lucent Technologies Inc. | Formatter, method of formatting encoded symbols and wireless communication system employing the same |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US7002900B2 (en) * | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
US8570988B2 (en) | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8320301B2 (en) * | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US8134976B2 (en) | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US7281189B2 (en) * | 2002-10-31 | 2007-10-09 | Matsushita Electric Indutrial Co., Ltd. | Apparatus and method for separately modulating systematic bits and parity bits in accordance with communication quality |
US8289836B2 (en) * | 2003-02-27 | 2012-10-16 | Intel Corporation | Apparatus and associated methods to introduce diversity in a multicarrier communication channel |
US7782970B2 (en) * | 2003-02-27 | 2010-08-24 | Intel Corporation | Apparatus and associated methods to introduce diversity in a multicarrier communication channel |
US7486735B2 (en) * | 2003-02-28 | 2009-02-03 | Nortel Networks Limited | Sub-carrier allocation for OFDM |
US20040240378A1 (en) * | 2003-03-14 | 2004-12-02 | Kei Ng Benjamin Koon | Method of spread space-spectrum multiple access |
JP4077355B2 (ja) * | 2003-04-16 | 2008-04-16 | 三菱電機株式会社 | 通信装置および通信方法 |
US7835262B2 (en) * | 2003-05-14 | 2010-11-16 | Texas Instruments Incorporated | Multi-band OFDM communications system |
CN1849769B (zh) * | 2003-09-15 | 2010-06-16 | 英特尔公司 | 利用高吞吐量空间频率分组码的多天线系统和方法 |
US7418042B2 (en) * | 2003-09-17 | 2008-08-26 | Atheros Communications, Inc. | Repetition coding for a wireless system |
US8213301B2 (en) * | 2003-11-07 | 2012-07-03 | Sharp Laboratories Of America, Inc. | Systems and methods for network channel characteristic measurement and network management |
ES2377648T3 (es) * | 2003-11-07 | 2012-03-29 | Sharp Kabushiki Kaisha | Método para acceso por división de frecuencia y de tiempo |
KR100520159B1 (ko) * | 2003-11-12 | 2005-10-10 | 삼성전자주식회사 | 다중 안테나를 사용하는 직교주파수분할다중 시스템에서간섭신호 제거 장치 및 방법 |
US7418051B2 (en) * | 2003-11-26 | 2008-08-26 | Lucent Technologies Inc. | Nonsystematic repeat-accumulate codes for encoding and decoding information in a communication system |
US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
US7145940B2 (en) * | 2003-12-05 | 2006-12-05 | Qualcomm Incorporated | Pilot transmission schemes for a multi-antenna system |
US7302009B2 (en) | 2003-12-17 | 2007-11-27 | Qualcomm Incorporated | Broadcast transmission with spatial spreading in a multi-antenna communication system |
US8204149B2 (en) | 2003-12-17 | 2012-06-19 | Qualcomm Incorporated | Spatial spreading in a multi-antenna communication system |
US7570695B2 (en) * | 2003-12-18 | 2009-08-04 | Intel Corporation | Method and adaptive bit interleaver for wideband systems using adaptive bit loading |
KR20050065295A (ko) * | 2003-12-23 | 2005-06-29 | 삼성전자주식회사 | 보조 심볼을 이용한 시공간 블록 부호 인코딩 방법 |
US7573946B2 (en) | 2003-12-31 | 2009-08-11 | Intel Corporation | Apparatus and associated methods to perform space-frequency interleaving in a multicarrier wireless communication channel |
US7308047B2 (en) * | 2003-12-31 | 2007-12-11 | Intel Corporation | Symbol de-mapping methods in multiple-input multiple-output systems |
US7336746B2 (en) | 2004-12-09 | 2008-02-26 | Qualcomm Incorporated | Data transmission with spatial spreading in a MIMO communication system |
US7995455B1 (en) | 2004-01-21 | 2011-08-09 | Marvell International Ltd. | Scalable MIMO-OFDM PHY for high throughput WLANs |
US20050204258A1 (en) * | 2004-02-13 | 2005-09-15 | Broadcom Corporation | Encoding system and method for a transmitter in wireless communications |
US8169889B2 (en) | 2004-02-18 | 2012-05-01 | Qualcomm Incorporated | Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system |
US7412209B2 (en) * | 2004-04-12 | 2008-08-12 | The Directv Group, Inc. | Shifted channel characteristics for mitigating co-channel interference |
US7161988B2 (en) * | 2004-04-12 | 2007-01-09 | The Directv Group, Inc. | Method and apparatus for minimizing co-channel interference |
US7672285B2 (en) * | 2004-06-28 | 2010-03-02 | Dtvg Licensing, Inc. | Method and apparatus for minimizing co-channel interference by scrambling |
US8213553B2 (en) * | 2004-04-12 | 2012-07-03 | The Directv Group, Inc. | Method and apparatus for identifying co-channel interference |
US8923785B2 (en) * | 2004-05-07 | 2014-12-30 | Qualcomm Incorporated | Continuous beamforming for a MIMO-OFDM system |
RU2341021C2 (ru) * | 2004-05-07 | 2008-12-10 | Самсунг Электроникс Ко., Лтд. | Устройство и способ для кодирования/декодирования пространственно-временного блочного кода в системе мобильной связи, использующей схему с многими входами и многими выходами |
JP4543737B2 (ja) | 2004-05-10 | 2010-09-15 | ソニー株式会社 | 無線通信システム、無線通信装置及び無線通信方法、並びにコンピュータ・プログラム |
KR101098215B1 (ko) | 2004-05-10 | 2011-12-28 | 소니 주식회사 | 무선 통신 시스템, 무선 통신 장치 및 무선 통신 방법, 및 기록 매체 |
RU2394379C2 (ru) * | 2004-05-11 | 2010-07-10 | Панасоник Корпорэйшн | Устройство радиопередатчика, устройство радиоприемника и система беспроводной связи |
EP1617338B1 (en) * | 2004-06-10 | 2009-12-23 | Panasonic Corporation | System and method for run-time reconfiguration |
GB2415336B (en) * | 2004-06-18 | 2006-11-08 | Toshiba Res Europ Ltd | Bit interleaver for a mimo system |
KR100671231B1 (ko) * | 2004-06-21 | 2007-02-28 | 삼성전자주식회사 | 최대 다이버시티 최대 부호율을 갖는 짝수개의 송신안테나를 위한 시공간 블록 부호 장치 및 방법 |
CN1998176B (zh) * | 2004-07-01 | 2011-06-15 | 高通股份有限公司 | 高级mimo交织方法和系统 |
US9148256B2 (en) * | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US9137822B2 (en) * | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
US8391410B2 (en) | 2004-07-29 | 2013-03-05 | Qualcomm Incorporated | Methods and apparatus for configuring a pilot symbol in a wireless communication system |
US20070081484A1 (en) * | 2004-07-29 | 2007-04-12 | Wang Michael M | Methods and apparatus for transmitting a frame structure in a wireless communication system |
SG155170A1 (en) * | 2004-07-29 | 2009-09-30 | Qualcomm Inc | System and method for diversity interleaving |
US9246728B2 (en) | 2004-07-29 | 2016-01-26 | Qualcomm Incorporated | System and method for frequency diversity |
US20080317142A1 (en) * | 2005-07-29 | 2008-12-25 | Qualcomm Incorporated | System and method for frequency diversity |
BRPI0515010A (pt) | 2004-08-12 | 2008-07-01 | Interdigital Tech Corp | método e aparelho para implementação de codificação de bloco de freqüências |
WO2006020934A2 (en) * | 2004-08-13 | 2006-02-23 | Conexant Systems, Inc. | Systems and methods for decreasing latency in a digital transmission system |
US20060218459A1 (en) * | 2004-08-13 | 2006-09-28 | David Hedberg | Coding systems and methods |
US7978778B2 (en) | 2004-09-03 | 2011-07-12 | Qualcomm, Incorporated | Receiver structures for spatial spreading with space-time or space-frequency transmit diversity |
US7894548B2 (en) | 2004-09-03 | 2011-02-22 | Qualcomm Incorporated | Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system |
EP1788742B1 (en) | 2004-09-13 | 2013-09-11 | Panasonic Corporation | Automatic retransmission request control system and retransmission method in mimo-ofdm system |
US8144572B2 (en) * | 2004-09-14 | 2012-03-27 | Qualcomm Incorporated | Detection and mitigation of interference and jammers in an OFDM system |
WO2006031090A1 (en) * | 2004-09-18 | 2006-03-23 | Samsung Electronics Co., Ltd. | Apparatus and method for frequency synchronization in ofdm system |
WO2006033509A1 (en) | 2004-09-22 | 2006-03-30 | Samsung Electronics Co., Ltd. | Mb-ofdm transmitter and receiver and signal processing method thereof |
US7539270B2 (en) * | 2004-09-30 | 2009-05-26 | Intel Corporation | Method and apparatus to interleave bits across symbols from different constellations |
KR100692594B1 (ko) | 2004-10-13 | 2007-03-13 | 삼성전자주식회사 | 멀티 밴드 직교 주파수 분할 다중 시스템에서 데이터 전송방법 |
US8130855B2 (en) * | 2004-11-12 | 2012-03-06 | Interdigital Technology Corporation | Method and apparatus for combining space-frequency block coding, spatial multiplexing and beamforming in a MIMO-OFDM system |
WO2006057195A1 (ja) | 2004-11-25 | 2006-06-01 | Matsushita Electric Industrial Co., Ltd. | マルチアンテナ送信装置、マルチアンテナ受信装置及びデータ再送方法 |
CN101076965B (zh) * | 2004-12-13 | 2013-04-24 | 皇家飞利浦电子股份有限公司 | 用于mimo传输的数据流的分别交织 |
US20060142051A1 (en) * | 2004-12-28 | 2006-06-29 | Nokia Corporation | Method and apparatus to optimize the utilization of the carriers in a flexible multi-carrier system |
US7551902B2 (en) * | 2004-12-28 | 2009-06-23 | Nokia Corporation | Method and apparatus to increase the diversity order for a multi-carrier FDM system |
US7835264B2 (en) * | 2004-12-29 | 2010-11-16 | Mitsubishi Denki Kabushiki Kaisha | Interleaver, deinterleaver, communication device, and method for interleaving and deinterleaving |
EP1821436A4 (en) * | 2005-01-20 | 2013-01-09 | Panasonic Corp | TRANSMISSION DEVICE, RECEPTION DEVICE, AND WIRELESS COMMUNICATION METHOD |
KR20060086673A (ko) * | 2005-01-27 | 2006-08-01 | 학교법인연세대학교 | Dblast시스템의 송신기 및 수신기 |
JP4494238B2 (ja) * | 2005-02-03 | 2010-06-30 | 株式会社エヌ・ティ・ティ・ドコモ | Mimo多重送信装置およびmimo多重送信方法 |
KR100677568B1 (ko) * | 2005-02-07 | 2007-02-02 | 삼성전자주식회사 | 무선랜 상의 데이터 수신에 대한 제어 응답 프레임의 전송속도 결정 방법 |
US7826807B2 (en) * | 2005-03-09 | 2010-11-02 | Qualcomm Incorporated | Methods and apparatus for antenna control in a wireless terminal |
US20060203794A1 (en) * | 2005-03-10 | 2006-09-14 | Qualcomm Incorporated | Systems and methods for beamforming in multi-input multi-output communication systems |
US9246560B2 (en) | 2005-03-10 | 2016-01-26 | Qualcomm Incorporated | Systems and methods for beamforming and rate control in a multi-input multi-output communication systems |
US9154211B2 (en) | 2005-03-11 | 2015-10-06 | Qualcomm Incorporated | Systems and methods for beamforming feedback in multi antenna communication systems |
US8446892B2 (en) * | 2005-03-16 | 2013-05-21 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US9461859B2 (en) | 2005-03-17 | 2016-10-04 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9520972B2 (en) | 2005-03-17 | 2016-12-13 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9143305B2 (en) | 2005-03-17 | 2015-09-22 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
CN101160748B (zh) | 2005-03-28 | 2012-07-04 | 松下电器产业株式会社 | 传输方法及传输系统 |
WO2006102744A1 (en) | 2005-03-30 | 2006-10-05 | Nortel Networks Limited | Systems and methods for ofdm channelization |
US7539463B2 (en) | 2005-03-30 | 2009-05-26 | Intel Corporation | Techniques to enhance diversity for a wireless system |
US9184870B2 (en) * | 2005-04-01 | 2015-11-10 | Qualcomm Incorporated | Systems and methods for control channel signaling |
KR20060106223A (ko) * | 2005-04-06 | 2006-10-12 | 삼성전자주식회사 | 직교 주파수 분할 다중 시스템에서 비트 삽입 및 코드 변조방식의 송신 장치 및 방법 |
US9036538B2 (en) | 2005-04-19 | 2015-05-19 | Qualcomm Incorporated | Frequency hopping design for single carrier FDMA systems |
US9408220B2 (en) | 2005-04-19 | 2016-08-02 | Qualcomm Incorporated | Channel quality reporting for adaptive sectorization |
US7466749B2 (en) * | 2005-05-12 | 2008-12-16 | Qualcomm Incorporated | Rate selection with margin sharing |
US8565194B2 (en) * | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
US8611284B2 (en) * | 2005-05-31 | 2013-12-17 | Qualcomm Incorporated | Use of supplemental assignments to decrement resources |
US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
US8462859B2 (en) * | 2005-06-01 | 2013-06-11 | Qualcomm Incorporated | Sphere decoding apparatus |
US7643843B2 (en) * | 2005-06-14 | 2010-01-05 | Interdigital Technology Corporation | Method and system for transmit power control in a multiple-input multiple-output wireless communication system |
US9179319B2 (en) | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
US8599945B2 (en) | 2005-06-16 | 2013-12-03 | Qualcomm Incorporated | Robust rank prediction for a MIMO system |
US9391751B2 (en) * | 2005-07-29 | 2016-07-12 | Qualcomm Incorporated | System and method for frequency diversity |
US9042212B2 (en) | 2005-07-29 | 2015-05-26 | Qualcomm Incorporated | Method and apparatus for communicating network identifiers in a communication system |
US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
US8559295B2 (en) * | 2005-08-15 | 2013-10-15 | Motorola Mobility Llc | Method and apparatus for pilot signal transmission |
ES2415355T3 (es) | 2005-08-18 | 2013-07-25 | Mosaid Technologies Incorporated | Sistema de comunicación inalámbrico de múltiple entrada múltiple salida |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
US20070041457A1 (en) * | 2005-08-22 | 2007-02-22 | Tamer Kadous | Method and apparatus for providing antenna diversity in a wireless communication system |
WO2007022628A1 (en) | 2005-08-23 | 2007-03-01 | Nortel Networks Limited | Adaptive two-dimensional channel interpolation |
US8073063B2 (en) | 2005-08-23 | 2011-12-06 | Nortel Networks Limited | Methods and systems for orthogonal frequency division multiplexing (OFDM) multiple zone partitioning |
US8644292B2 (en) | 2005-08-24 | 2014-02-04 | Qualcomm Incorporated | Varied transmission time intervals for wireless communication system |
JP5080470B2 (ja) | 2005-08-26 | 2012-11-21 | ザ・ディレクティービー・グループ・インコーポレイテッド | 信号送信のためのスクランブリングコードを決定する方法と装置 |
AU2006203698A1 (en) * | 2005-08-26 | 2007-03-15 | Nec Australia Pty Ltd | Transmit diversity scheme |
US20070047495A1 (en) * | 2005-08-29 | 2007-03-01 | Qualcomm Incorporated | Reverse link soft handoff in a wireless multiple-access communication system |
US9136974B2 (en) | 2005-08-30 | 2015-09-15 | Qualcomm Incorporated | Precoding and SDMA support |
JP3989512B2 (ja) * | 2005-09-15 | 2007-10-10 | 三洋電機株式会社 | 無線装置 |
JP4799293B2 (ja) * | 2005-09-21 | 2011-10-26 | 三洋電機株式会社 | 無線装置 |
US7864777B1 (en) * | 2005-09-30 | 2011-01-04 | Nortel Networks Limited | Transmission format selection for optimizing transmission of delay sensitive traffic |
WO2007036039A1 (en) * | 2005-09-30 | 2007-04-05 | Nortel Networks Limited | Initial access channel for scalable wireless mobile communication networks |
TWI324002B (en) * | 2005-10-06 | 2010-04-21 | Integrated System Solution Corp | Methods and apparatus for circulation transmissions for ofdm-based mimo systems |
KR100981495B1 (ko) * | 2005-10-12 | 2010-09-10 | 삼성전자주식회사 | 통신 시스템에서 데이터 송신 방법 및 장치 |
US8693405B2 (en) | 2005-10-27 | 2014-04-08 | Qualcomm Incorporated | SDMA resource management |
US9144060B2 (en) | 2005-10-27 | 2015-09-22 | Qualcomm Incorporated | Resource allocation for shared signaling channels |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US9225488B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Shared signaling channel |
US7661037B2 (en) * | 2005-10-27 | 2010-02-09 | Samsung Electronics Co., Ltd. | LDPC concatenation rules for IEEE 802.11n systems |
US9225416B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Varied signaling channels for a reverse link in a wireless communication system |
US8045512B2 (en) | 2005-10-27 | 2011-10-25 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9210651B2 (en) | 2005-10-27 | 2015-12-08 | Qualcomm Incorporated | Method and apparatus for bootstraping information in a communication system |
US9088384B2 (en) | 2005-10-27 | 2015-07-21 | Qualcomm Incorporated | Pilot symbol transmission in wireless communication systems |
US8477684B2 (en) * | 2005-10-27 | 2013-07-02 | Qualcomm Incorporated | Acknowledgement of control messages in a wireless communication system |
US8582509B2 (en) | 2005-10-27 | 2013-11-12 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
BRPI0617861A2 (pt) * | 2005-10-28 | 2012-04-17 | Matsushita Electric Ind Co Ltd | dispositivo de transmissão, dispositivo de recepção, método de transmissão, método de recepção e sistema de comunicação sem fio |
US8582548B2 (en) | 2005-11-18 | 2013-11-12 | Qualcomm Incorporated | Frequency division multiple access schemes for wireless communication |
US7707479B2 (en) * | 2005-12-13 | 2010-04-27 | Samsung Electronics Co., Ltd. | Method of generating structured irregular low density parity checkcodes for wireless systems |
US7584406B2 (en) | 2005-12-20 | 2009-09-01 | Samsung Electronics Co., Ltd. | LDPC concatenation rules for IEEE 802.11n system with packets length specific in octets |
US7620880B2 (en) * | 2005-12-20 | 2009-11-17 | Samsung Electronics Co., Ltd. | LDPC concatenation rules for IEEE 802.11n system with packets length specified in OFDM symbols |
US8831607B2 (en) * | 2006-01-05 | 2014-09-09 | Qualcomm Incorporated | Reverse link other sector communication |
TWI562572B (en) | 2006-01-11 | 2016-12-11 | Interdigital Tech Corp | Method and apparatus for implementing space time processing with unequal modulation and coding schemes |
CN101375570B (zh) * | 2006-01-20 | 2014-06-25 | 高通股份有限公司 | 用于无线通信系统中导频多路复用的方法和装置 |
US8130857B2 (en) * | 2006-01-20 | 2012-03-06 | Qualcomm Incorporated | Method and apparatus for pilot multiplexing in a wireless communication system |
EP1819118A3 (en) * | 2006-02-11 | 2008-11-19 | Samsung Electronics Co., Ltd. | Method and apparatus for allocating transmission resources and signaling the allocated transmission resources for frequency diversity |
KR100849329B1 (ko) * | 2006-02-11 | 2008-07-29 | 삼성전자주식회사 | 주파수 다이버시티를 위한 전송 자원 할당과 시그널링 방법및 장치 |
US8077595B2 (en) | 2006-02-21 | 2011-12-13 | Qualcomm Incorporated | Flexible time-frequency multiplexing structure for wireless communication |
KR101119455B1 (ko) * | 2006-02-21 | 2012-03-20 | 퀄컴 인코포레이티드 | Ofdm 및 cdma 방식을 지원하는 방법 및 장치 |
US9461736B2 (en) * | 2006-02-21 | 2016-10-04 | Qualcomm Incorporated | Method and apparatus for sub-slot packets in wireless communication |
US8689025B2 (en) * | 2006-02-21 | 2014-04-01 | Qualcomm Incorporated | Reduced terminal power consumption via use of active hold state |
KR101260835B1 (ko) | 2006-02-28 | 2013-05-06 | 삼성전자주식회사 | 다중 안테나 시스템의 신호 송수신장치 및 방법 |
KR100950654B1 (ko) * | 2006-03-03 | 2010-04-01 | 삼성전자주식회사 | 다중 입력 다중 출력 방식을 사용하는 통신 시스템에서신호 송수신 장치 및 방법 |
JP2009520385A (ja) * | 2006-03-07 | 2009-05-21 | クゥアルコム・インコーポレイテッド | 直交周波数分割多元アクセス通信システムの帯域内レート制御 |
KR100817497B1 (ko) | 2006-03-10 | 2008-03-27 | 한국전자통신연구원 | 다중 안테나를 위한 심볼 생성 장치 및 방법 |
KR101208538B1 (ko) * | 2006-03-14 | 2012-12-05 | 엘지전자 주식회사 | 다중 안테나를 사용하는 시스템에서의 신호 전송 방법 |
CN101039162B (zh) * | 2006-03-17 | 2010-10-06 | 华为技术有限公司 | 多输入多输出系统中确定反馈的方法、装置和系统 |
CN101043297B (zh) * | 2006-03-20 | 2010-08-25 | 华为技术有限公司 | 一种多天线通信中发射信号的方法及系统 |
EP1999861A4 (en) * | 2006-03-24 | 2013-08-14 | Korea Electronics Telecomm | DEVICE AND METHOD FOR MACRODIVERSITY BETWEEN CELLS FOR PROVIDING BROADCAST / MULTICAST SERVICE USING A MULTIPLE ANTENNA |
US8543070B2 (en) | 2006-04-24 | 2013-09-24 | Qualcomm Incorporated | Reduced complexity beam-steered MIMO OFDM system |
US8023574B2 (en) * | 2006-05-05 | 2011-09-20 | Intel Corporation | Method and apparatus to support scalability in a multicarrier network |
CN101467376B (zh) | 2006-06-08 | 2016-06-08 | 皇家飞利浦电子股份有限公司 | 一种空间-时间-频率编码的方法和装置 |
CN101502022B (zh) * | 2006-06-27 | 2013-09-11 | 日本电气株式会社 | 通信系统、发送器、接收器以及多路存取方法 |
JP5061189B2 (ja) * | 2006-08-07 | 2012-10-31 | インターデイジタル テクノロジー コーポレーション | マルチ・ユーザーの仮想mimoを実施するための方法、装置、およびシステム |
SG141259A1 (en) * | 2006-09-12 | 2008-04-28 | Oki Techno Ct Singapore Pte | Apparatus and method for receiving digital video signals |
US8290072B2 (en) * | 2006-10-24 | 2012-10-16 | Mitsubishi Electric Corporation | Transmission apparatus, reception apparatus, communication apparatus, and communication system |
KR101382614B1 (ko) | 2006-11-16 | 2014-04-10 | 한국전자통신연구원 | 하향링크 프레임을 생성하고 전송하는 방법 |
US7610036B2 (en) * | 2007-01-08 | 2009-10-27 | Mitsubishi Electric Research Laboratories, Inc. | Space-time-frequency sensing of RF spectrum in cognitive radios |
EP1959603A1 (en) * | 2007-02-15 | 2008-08-20 | Mitsubishi Electric Information Technology Center Europe B.V. | Method of radio data emission, emitter and receiver using the method |
US8254492B2 (en) * | 2007-04-26 | 2012-08-28 | Samsung Electronics Co., Ltd. | Transmit diversity in a wireless communication system |
WO2008133439A1 (en) * | 2007-04-26 | 2008-11-06 | Samsung Electronics Co., Ltd. | Transmit diversity in a wireless communication system |
US8009758B2 (en) * | 2007-06-20 | 2011-08-30 | Samsung Electronics Co., Ltd | Apparatus and method for channel-interleaving and channel-deinterleaving data in a wireless communication system |
KR101365565B1 (ko) | 2007-08-08 | 2014-02-21 | 포항공과대학교 산학협력단 | 공간 주파수 블록 부호화 신호 처리 시스템 |
WO2009028912A2 (en) * | 2007-08-30 | 2009-03-05 | Lg Electronics Inc. | Apparatus for transmitting and receiving a signal and method for transmitting and receiving a signal |
US7994969B2 (en) * | 2007-09-21 | 2011-08-09 | The Regents Of The University Of Michigan | OFDM frequency scanning radar |
DK2056549T3 (da) * | 2007-10-30 | 2013-02-04 | Sony Corp | Databehandlingsanordning og -fremgangsmåde |
KR101455992B1 (ko) * | 2007-11-14 | 2014-11-03 | 엘지전자 주식회사 | 다중 안테나 시스템에서 신호 전송 방법 |
JP5109707B2 (ja) * | 2008-02-19 | 2012-12-26 | コニカミノルタビジネステクノロジーズ株式会社 | 定着装置及び画像形成装置 |
JP4626669B2 (ja) * | 2008-04-14 | 2011-02-09 | ソニー株式会社 | 送信装置、通信システム、送信方法及びプログラム |
GB2459284A (en) * | 2008-04-17 | 2009-10-21 | Stephen George Nunney | MIMO spatial multiplexing system |
KR101509728B1 (ko) * | 2008-06-05 | 2015-04-06 | 한국전자통신연구원 | 심볼 매핑 방법 및 장치 |
WO2009148272A2 (en) * | 2008-06-05 | 2009-12-10 | Electronics And Telecommunications Research Institute | Apparatus and method for mapping symbol |
CN102187594B (zh) * | 2008-08-20 | 2014-10-29 | Lg伊诺特有限公司 | 多输入多输出通信系统及其控制方法 |
JP2010074398A (ja) * | 2008-09-17 | 2010-04-02 | Ntt Docomo Inc | Ofdm変復調方法、ofdm変調装置、ofdm復調装置およびofdm変復調システム |
KR101013652B1 (ko) * | 2008-12-30 | 2011-02-10 | 주식회사 세아네트웍스 | 무선 통신 시스템의 데이터 송신 방법 |
US20100232384A1 (en) * | 2009-03-13 | 2010-09-16 | Qualcomm Incorporated | Channel estimation based upon user specific and common reference signals |
US8560696B2 (en) * | 2009-04-28 | 2013-10-15 | Intel Corporation | Transmission of advanced-MAP information elements in mobile networks |
WO2010124414A1 (zh) * | 2009-04-28 | 2010-11-04 | 上海贝尔股份有限公司 | 多天线发射机以及用于多天线发射机中的数据发送方法 |
US8498252B2 (en) * | 2009-07-06 | 2013-07-30 | Intel Corporation | Midamble for wireless networks |
US9706599B1 (en) | 2009-07-23 | 2017-07-11 | Marvell International Ltd. | Long wireless local area network (WLAN) packets with midambles |
EP2460298A2 (en) * | 2009-07-29 | 2012-06-06 | Marvell World Trade Ltd. | Methods and apparatus for wlan transmission |
WO2011018824A1 (ja) * | 2009-08-12 | 2011-02-17 | 株式会社日立製作所 | 無線通信システム、無線通信装置及び無線通信方法 |
ES2363905B1 (es) * | 2009-09-18 | 2012-06-22 | Vodafone España, S.A.U. | Diversidad de transmisión multiportadora en utran para hsdpa. |
US8553627B2 (en) * | 2009-10-02 | 2013-10-08 | Sharp Laboratories Of America, Inc. | Transmission diversity scheme on physical uplink control channel (PUCCH) with ACK/NACK differentiation |
US8374136B2 (en) * | 2009-10-02 | 2013-02-12 | Sharp Laboratories Of America, Inc. | Transmission diversity scheme on physical uplink control channel (PUCCH) with ACK/NACK differentiation |
US8509326B2 (en) * | 2009-11-16 | 2013-08-13 | Intel Mobile Communications GmbH | OFDM space-time or space-frequency block code transmitter |
US9098274B2 (en) | 2009-12-03 | 2015-08-04 | Intel Corporation | Methods and apparatuses to improve turbo performance for events handling |
WO2011105804A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송신 장치, 방송 신호 수신 장치, 및 방송 신호 송/수신 장치에서 방송 신호 송수신 방법 |
EP2541904B1 (en) * | 2010-02-23 | 2017-06-14 | LG Electronics Inc. | Broadcasting signal transmitter/receiver and broadcasting signal transmission/reception method |
WO2011105763A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
WO2011105760A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
WO2011105745A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
EP2541921A4 (en) * | 2010-02-23 | 2014-09-17 | Lg Electronics Inc | BROADCAST SIGNAL AND RECEIVER AND BROADCAST SIGNALING AND RECEIVING METHOD |
WO2011105762A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
WO2011105761A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
WO2011105795A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
WO2011105786A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
WO2011105796A2 (ko) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
EP3133758B1 (en) * | 2010-02-23 | 2019-09-18 | Lg Electronics Inc. | Broadcasting signal receiver and method thereof |
EP2541924B1 (en) * | 2010-02-23 | 2017-08-09 | LG Electronics Inc. | Broadcasting signal transmitter/receiver and broadcasting signal transmission/reception method |
EP2541905A4 (en) * | 2010-02-23 | 2014-10-15 | Lg Electronics Inc | BROADCASTING SIGNAL TRANSCEIVER AND METHOD OF TRANSMITTING BROADCAST SIGNAL TRANSMITTING |
WO2011111963A2 (ko) * | 2010-03-08 | 2011-09-15 | 엘지전자 주식회사 | 방송 신호 송/수신기 및 방송 신호 송/수신 방법 |
KR20110113897A (ko) | 2010-04-12 | 2011-10-19 | 주식회사 팬택 | 다수의 요소 반송파를 운영하는 무선 통신 시스템에서 업링크 타이밍 그룹에 대한 정보를 송수신하는 방법 및 장치 |
US8781006B2 (en) | 2010-05-21 | 2014-07-15 | Qualcomm Incorporated | Link adaptation in multi-carrier communication systems |
CN102404072B (zh) | 2010-09-08 | 2013-03-20 | 华为技术有限公司 | 一种信息比特发送方法、装置和系统 |
EP2701327B1 (en) * | 2011-04-19 | 2024-05-29 | Sun Patent Trust | Pre-coding method and pre-coding device |
CN102857464B (zh) * | 2011-08-17 | 2016-03-30 | 北京泰美世纪科技有限公司 | 数字传输系统中扩展信号带宽的方法和装置 |
GB2502556B (en) * | 2012-05-30 | 2017-08-02 | Imagination Tech Ltd | Noise variance estimation and interference detection |
KR101995266B1 (ko) | 2012-08-17 | 2019-07-02 | 삼성전자 주식회사 | 빔포밍을 이용한 시스템에서 시스템 액세스 방법 및 장치 |
US20140269768A1 (en) * | 2013-03-14 | 2014-09-18 | Qualcomm Incorporated | Methods and apparatus for increasing diversity in downlink transmissions |
KR20160043073A (ko) * | 2013-08-14 | 2016-04-20 | 엘지전자 주식회사 | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법 및 방송 신호 수신 방법 |
US9210022B2 (en) * | 2013-11-25 | 2015-12-08 | Lg Electronics Inc. | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast, signals, method for transmitting broadcast signals and method for receiving broadcast signals |
CN104753653B (zh) * | 2013-12-31 | 2019-07-12 | 中兴通讯股份有限公司 | 一种解速率匹配的方法、装置和接收侧设备 |
KR101721293B1 (ko) * | 2013-12-31 | 2017-04-10 | 한국전자통신연구원 | 무선랜 시스템에서 채널을 추정하는 장치 및 방법 |
US9520898B2 (en) * | 2014-02-13 | 2016-12-13 | Electronics And Telecommunications Research Institute | Modulator and modulation method using non-uniform 16-symbol signal constellation for low-density parity check codeword having 3/15 code rate |
KR102323765B1 (ko) * | 2014-02-13 | 2021-11-11 | 한국전자통신연구원 | 부호율이 3/15인 ldpc 부호어를 위한 비균등 16-심볼 신호성상을 이용한 변조기 및 이를 이용한 변조 방법 |
CA3043836C (en) * | 2014-02-13 | 2020-10-20 | Electronics And Telecommunications Research Institute | Modulator and modulation method using non-uniform 16-symbol signal constellation for low-density parity check codeword having 4/15 code rate |
KR101692608B1 (ko) * | 2014-02-17 | 2017-01-03 | 연세대학교 원주산학협력단 | 연판정 값을 기초로 한 오류 검출용 토글링 시퀀스 결정 방법 및 에러 패턴 결정 방법 및 그 장치 |
US9602141B2 (en) | 2014-04-21 | 2017-03-21 | Sandisk Technologies Llc | High-speed multi-block-row layered decoder for low density parity check (LDPC) codes |
US9748973B2 (en) * | 2014-04-22 | 2017-08-29 | Sandisk Technologies Llc | Interleaved layered decoder for low-density parity check codes |
US9503125B2 (en) | 2014-05-08 | 2016-11-22 | Sandisk Technologies Llc | Modified trellis-based min-max decoder for non-binary low-density parity-check error-correcting codes |
US9832059B2 (en) | 2014-06-02 | 2017-11-28 | Marvell World Trade Ltd. | High efficiency orthogonal frequency division multiplexing (OFDM) physical layer (PHY) |
CN106664281B (zh) | 2014-06-11 | 2020-07-10 | 马维尔国际有限公司 | 用于在无线通信系统中填充ofdm符号的方法和装置 |
EP3214771A4 (en) * | 2014-11-25 | 2017-11-22 | Huawei Technologies Co., Ltd. | Transmitter diversity transmission method, sending-end device and receiving-end device for fbmc |
EP3226571A4 (en) * | 2014-11-26 | 2018-04-18 | LG Electronics Inc. | Apparatus and method for transmitting and receiving broadcast signal |
CN112134605B (zh) | 2015-11-13 | 2024-04-09 | 华为技术有限公司 | 数据传输方法和装置 |
US10461891B2 (en) * | 2015-12-18 | 2019-10-29 | Qualcomm Incorporated | Staggered pilot placement |
US10341050B2 (en) * | 2015-12-23 | 2019-07-02 | Samsung Electronics Co., Ltd. | Apparatus and method for encoding and decoding channel in communication or broadcasting system |
KR20170075627A (ko) | 2015-12-23 | 2017-07-03 | 삼성전자주식회사 | 통신 또는 방송 시스템에서 채널 부호화/복호화 방법 및 장치 |
US9967122B2 (en) | 2016-01-19 | 2018-05-08 | Qualcomm Incorporated | Techniques for extending an OFDM waveform for multiplexing |
US10425200B2 (en) | 2016-04-13 | 2019-09-24 | Qualcomm Incorporated | System and method for beam adjustment request |
US11088747B2 (en) | 2016-04-13 | 2021-08-10 | Qualcomm Incorporated | System and method for beam management |
US11394398B2 (en) * | 2017-05-05 | 2022-07-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive selection and efficient storage of information bit locations for polar codes |
EP3635926B1 (en) | 2017-06-09 | 2024-03-27 | Marvell World Trade Ltd. | Packets with midambles having compressed ofdm symbols |
EP3685543A1 (en) | 2017-09-22 | 2020-07-29 | NXP USA, Inc. | Determining number of midambles in a packet |
CN109241581B (zh) * | 2018-08-16 | 2022-12-06 | 中国电建集团河北省电力勘测设计研究院有限公司 | 基于kks编码实现二、三维交互关联的方法 |
GB201820161D0 (en) * | 2018-12-11 | 2019-01-23 | Nordic Semiconductor Asa | Radio devices with switchable antennas |
Family Cites Families (518)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4679227A (en) | 1985-05-20 | 1987-07-07 | Telebit Corporation | Ensemble modem structure for imperfect transmission media |
US4736371A (en) * | 1985-12-30 | 1988-04-05 | Nec Corporation | Satellite communications system with random multiple access and time slot reservation |
JPH063956Y2 (ja) | 1986-03-14 | 1994-02-02 | 松下電工株式会社 | 電動ガレ−ジ扉 |
US4750198A (en) | 1986-12-12 | 1988-06-07 | Astronet Corporation/Plessey U.K. | Cellular radiotelephone system providing diverse separately-accessible groups of channels |
US4797879A (en) | 1987-06-05 | 1989-01-10 | American Telephone And Telegraph Company At&T Bell Laboratories | Packet switched interconnection protocols for a star configured optical lan |
JPH03104430U (zh) | 1990-02-14 | 1991-10-30 | ||
US5081679A (en) | 1990-07-20 | 1992-01-14 | Ericsson Ge Mobile Communications Holding Inc. | Resynchronization of encryption systems upon handoff |
IL100213A (en) | 1990-12-07 | 1995-03-30 | Qualcomm Inc | Mikrata Kedma phone system and its antenna distribution system |
US5239677A (en) | 1991-07-01 | 1993-08-24 | Motorola, Inc. | Method and apparatus for initiating communication on an assigned frequency |
IT1250515B (it) | 1991-10-07 | 1995-04-08 | Sixtel Spa | Rete per area locale senza fili. |
US5241544A (en) | 1991-11-01 | 1993-08-31 | Motorola, Inc. | Multi-channel tdm communication system slot phase correction |
US5592490A (en) | 1991-12-12 | 1997-01-07 | Arraycomm, Inc. | Spectrally efficient high capacity wireless communication systems |
US6850252B1 (en) * | 1999-10-05 | 2005-02-01 | Steven M. Hoffberg | Intelligent electronic appliance system and method |
US5295159A (en) * | 1992-04-17 | 1994-03-15 | Bell Communications Research, Inc. | Coordinated coding for digital transmission |
RU2015281C1 (ru) | 1992-09-22 | 1994-06-30 | Борис Михайлович Кондрашов | Запорное устройство |
US5404355A (en) | 1992-10-05 | 1995-04-04 | Ericsson Ge Mobile Communications, Inc. | Method for transmitting broadcast information in a digital control channel |
GB2300337B (en) | 1992-10-05 | 1997-03-26 | Ericsson Ge Mobile Communicat | Digital control channel |
DE69327837T2 (de) | 1992-12-01 | 2000-10-12 | Koninklijke Philips Electronics N.V., Eindhoven | Teilband-Diversityübertragungssystem |
US5471647A (en) | 1993-04-14 | 1995-11-28 | The Leland Stanford Junior University | Method for minimizing cross-talk in adaptive transmission antennas |
US5479447A (en) | 1993-05-03 | 1995-12-26 | The Board Of Trustees Of The Leland Stanford, Junior University | Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines |
US5483667A (en) | 1993-07-08 | 1996-01-09 | Northern Telecom Limited | Frequency plan for a cellular network |
DE69423546T2 (de) | 1993-07-09 | 2000-09-21 | Koninklijke Philips Electronics N.V., Eindhoven | Telekommunikationsnetzwerk, Hauptstation und Nebenstation zum Gebrauch in solchem Netzwerk |
ZA946674B (en) | 1993-09-08 | 1995-05-02 | Qualcomm Inc | Method and apparatus for determining the transmission data rate in a multi-user communication system |
US5506861A (en) | 1993-11-22 | 1996-04-09 | Ericsson Ge Mobile Comminications Inc. | System and method for joint demodulation of CDMA signals |
US5418813A (en) | 1993-12-06 | 1995-05-23 | Motorola, Inc. | Method and apparatus for creating a composite waveform |
US5490087A (en) | 1993-12-06 | 1996-02-06 | Motorola, Inc. | Radio channel access control |
US5422733A (en) | 1994-02-04 | 1995-06-06 | Motorola, Inc. | Method and apparatus for facsimile communication of first and second type information with selective call communication systems |
US5491837A (en) | 1994-03-07 | 1996-02-13 | Ericsson Inc. | Method and system for channel allocation using power control and mobile-assisted handover measurements |
US5493712A (en) * | 1994-03-23 | 1996-02-20 | At&T Corp. | Fast AGC for TDMA radio systems |
KR970703088A (ko) | 1994-05-02 | 1997-06-10 | 존 에이취. 무어 | 다중 서브채널 플렉서블 프로토콜 방법 및 장치(Multiple Subchannel Flexible Protocol Method and Apparatus) |
US5677909A (en) | 1994-05-11 | 1997-10-14 | Spectrix Corporation | Apparatus for exchanging data between a central station and a plurality of wireless remote stations on a time divided commnication channel |
US6157343A (en) * | 1996-09-09 | 2000-12-05 | Telefonaktiebolaget Lm Ericsson | Antenna array calibration |
DE4425713C1 (de) | 1994-07-20 | 1995-04-20 | Inst Rundfunktechnik Gmbh | Verfahren zur Vielträger Modulation und Demodulation von digital codierten Daten |
FR2724084B1 (fr) | 1994-08-31 | 1997-01-03 | Alcatel Mobile Comm France | Systeme de transmission d'informations par un canal de transmission variant dans le temps, et equipements d'emission et de reception correspondants |
ZA957858B (en) | 1994-09-30 | 1996-04-22 | Qualcomm Inc | Multipath search processor for a spread spectrum multiple access communication system |
US5710768A (en) | 1994-09-30 | 1998-01-20 | Qualcomm Incorporated | Method of searching for a bursty signal |
JPH08274756A (ja) | 1995-03-30 | 1996-10-18 | Toshiba Corp | 無線通信システム |
JP3231575B2 (ja) * | 1995-04-18 | 2001-11-26 | 三菱電機株式会社 | 無線データ伝送装置 |
KR0155818B1 (ko) | 1995-04-29 | 1998-11-16 | 김광호 | 다중 반송파 전송시스템에서 적응형 전력 분배 방법 및 장치 |
US5606729A (en) * | 1995-06-21 | 1997-02-25 | Motorola, Inc. | Method and apparatus for implementing a received signal quality measurement in a radio communication system |
US5729542A (en) | 1995-06-28 | 1998-03-17 | Motorola, Inc. | Method and apparatus for communication system access |
US7929498B2 (en) | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
US5638369A (en) | 1995-07-05 | 1997-06-10 | Motorola, Inc. | Method and apparatus for inbound channel selection in a communication system |
DE69535033T2 (de) | 1995-07-11 | 2007-03-08 | Alcatel | Zuweisung von Kapazität bei OFDM |
GB9514659D0 (en) | 1995-07-18 | 1995-09-13 | Northern Telecom Ltd | An antenna downlink beamsteering arrangement |
US5867539A (en) | 1995-07-21 | 1999-02-02 | Hitachi America, Ltd. | Methods and apparatus for reducing the effect of impulse noise on receivers |
JP2802255B2 (ja) | 1995-09-06 | 1998-09-24 | 株式会社次世代デジタルテレビジョン放送システム研究所 | 直交周波数分割多重伝送方式及びそれを用いる送信装置と受信装置 |
GB9521739D0 (en) | 1995-10-24 | 1996-01-03 | Nat Transcommunications Ltd | Decoding carriers encoded using orthogonal frequency division multiplexing |
US6005876A (en) | 1996-03-08 | 1999-12-21 | At&T Corp | Method and apparatus for mobile data communication |
US5699365A (en) | 1996-03-27 | 1997-12-16 | Motorola, Inc. | Apparatus and method for adaptive forward error correction in data communications |
US5924015A (en) | 1996-04-30 | 1999-07-13 | Trw Inc | Power control method and apparatus for satellite based telecommunications system |
JPH09307526A (ja) | 1996-05-17 | 1997-11-28 | Mitsubishi Electric Corp | デジタル放送受信機 |
DE69705356T2 (de) | 1996-05-17 | 2002-05-02 | Motorola Ltd., Basingstoke | Verfahren und Vorrichtung zur Gewichtung eines Uebertragungsweges |
JPH09327073A (ja) | 1996-06-07 | 1997-12-16 | N T T Ido Tsushinmo Kk | Cdma移動通信システムにおけるパイロットチャネル配置および送信方法 |
FI101920B (fi) | 1996-06-07 | 1998-09-15 | Nokia Telecommunications Oy | Kanavanvarausmenetelmä pakettiverkkoa varten |
US5822374A (en) | 1996-06-07 | 1998-10-13 | Motorola, Inc. | Method for fine gains adjustment in an ADSL communications system |
US6798735B1 (en) | 1996-06-12 | 2004-09-28 | Aware, Inc. | Adaptive allocation for variable bandwidth multicarrier communication |
US6072779A (en) | 1997-06-12 | 2000-06-06 | Aware, Inc. | Adaptive allocation for variable bandwidth multicarrier communication |
US6097771A (en) | 1996-07-01 | 2000-08-01 | Lucent Technologies Inc. | Wireless communications system having a layered space-time architecture employing multi-element antennas |
JPH1051402A (ja) | 1996-08-01 | 1998-02-20 | Nec Corp | 受信電界検出回路 |
US6067292A (en) | 1996-08-20 | 2000-05-23 | Lucent Technologies Inc | Pilot interference cancellation for a coherent wireless code division multiple access receiver |
AU4238697A (en) | 1996-08-29 | 1998-03-19 | Cisco Technology, Inc. | Spatio-temporal processing for communication |
JP2001359152A (ja) | 2000-06-14 | 2001-12-26 | Sony Corp | 無線通信システム、無線基地局装置、無線移動局装置、無線ゾーン割当て方法及び無線通信方法 |
JP2846860B2 (ja) * | 1996-10-01 | 1999-01-13 | ユニデン株式会社 | スペクトル拡散通信方式を用いた送信機、受信機、通信システム及び通信方法 |
US6275543B1 (en) | 1996-10-11 | 2001-08-14 | Arraycomm, Inc. | Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing |
TW496620U (en) | 1996-10-16 | 2002-07-21 | Behavior Tech Computer Corp | Wireless data transmitting apparatus |
US5886988A (en) | 1996-10-23 | 1999-03-23 | Arraycomm, Inc. | Channel assignment and call admission control for spatial division multiple access communication systems |
US6049548A (en) | 1996-11-22 | 2000-04-11 | Stanford Telecommunications, Inc. | Multi-access CS-P/CD-E system and protocols on satellite channels applicable to a group of mobile users in close proximity |
WO1998024192A1 (en) | 1996-11-26 | 1998-06-04 | Trw Inc. | Cochannel signal processing system |
US5896376A (en) | 1996-12-13 | 1999-04-20 | Ericsson Inc. | Optimal use of logical channels within a mobile telecommunications network |
US6232918B1 (en) | 1997-01-08 | 2001-05-15 | Us Wireless Corporation | Antenna array calibration in wireless communication systems |
JPH10209956A (ja) | 1997-01-28 | 1998-08-07 | Nippon Telegr & Teleph Corp <Ntt> | 無線パケット通信方法 |
US6128276A (en) | 1997-02-24 | 2000-10-03 | Radix Wireless, Inc. | Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays |
JPH10303794A (ja) | 1997-02-27 | 1998-11-13 | Mitsubishi Electric Corp | 既知系列検出器 |
US6084915A (en) | 1997-03-03 | 2000-07-04 | 3Com Corporation | Signaling method having mixed-base shell map indices |
US6175550B1 (en) | 1997-04-01 | 2001-01-16 | Lucent Technologies, Inc. | Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof |
KR100267856B1 (ko) | 1997-04-16 | 2000-10-16 | 윤종용 | 이동통신시스템에서오버헤드채널관리방법및장치 |
US6308080B1 (en) | 1997-05-16 | 2001-10-23 | Texas Instruments Incorporated | Power control in point-to-multipoint systems |
US6008760A (en) | 1997-05-23 | 1999-12-28 | Genghis Comm | Cancellation system for frequency reuse in microwave communications |
FR2764143A1 (fr) | 1997-05-27 | 1998-12-04 | Philips Electronics Nv | Procede de determination d'un format d'emission de symboles dans un systeme de transmission et systeme |
US5867478A (en) * | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
US6067458A (en) | 1997-07-01 | 2000-05-23 | Qualcomm Incorporated | Method and apparatus for pre-transmission power control using lower rate for high rate communication |
US6108369A (en) | 1997-07-11 | 2000-08-22 | Telefonaktiebolaget Lm Ericsson | Channelization code allocation for radio communication systems |
US6333953B1 (en) | 1997-07-21 | 2001-12-25 | Ericsson Inc. | System and methods for selecting an appropriate detection technique in a radiocommunication system |
EP0895387A1 (de) | 1997-07-28 | 1999-02-03 | Deutsche Thomson-Brandt Gmbh | Erkennung des Übertragungsmodus eines DVB-Signales |
US6141542A (en) | 1997-07-31 | 2000-10-31 | Motorola, Inc. | Method and apparatus for controlling transmit diversity in a communication system |
CN1086061C (zh) | 1997-08-12 | 2002-06-05 | 鸿海精密工业股份有限公司 | 电连接器的固持装置 |
EP0899896A1 (de) | 1997-08-27 | 1999-03-03 | Siemens Aktiengesellschaft | Verfahren und Einrichtung zur Schätzung räumlicher Parameter von Überstragungskanälen |
JP2991167B2 (ja) | 1997-08-27 | 1999-12-20 | 三菱電機株式会社 | Tdma可変スロット割当方法 |
US6131016A (en) | 1997-08-27 | 2000-10-10 | At&T Corp | Method and apparatus for enhancing communication reception at a wireless communication terminal |
US6167031A (en) | 1997-08-29 | 2000-12-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for selecting a combination of modulation and channel coding schemes in a digital communication system |
BR9812816A (pt) | 1997-09-15 | 2000-08-08 | Adaptive Telecom Inc | Processos para comunicação sem fio, e para eficientemente determinar na estação base um canal espacial da unidade móvel em um sistema de comunicação sem fio, e, estação base de cdma |
US6389000B1 (en) | 1997-09-16 | 2002-05-14 | Qualcomm Incorporated | Method and apparatus for transmitting and receiving high speed data in a CDMA communication system using multiple carriers |
US6590928B1 (en) | 1997-09-17 | 2003-07-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Frequency hopping piconets in an uncoordinated wireless multi-user system |
AUPO932297A0 (en) | 1997-09-19 | 1997-10-09 | Commonwealth Scientific And Industrial Research Organisation | Medium access control protocol for data communications |
KR100234329B1 (ko) | 1997-09-30 | 1999-12-15 | 윤종용 | Ofdm 시스템 수신기의 fft 윈도우 위치 복원장치 및 그 방법_ |
US6178196B1 (en) * | 1997-10-06 | 2001-01-23 | At&T Corp. | Combined interference cancellation and maximum likelihood decoding of space-time block codes |
US6574211B2 (en) | 1997-11-03 | 2003-06-03 | Qualcomm Incorporated | Method and apparatus for high rate packet data transmission |
US6377812B1 (en) | 1997-11-20 | 2002-04-23 | University Of Maryland | Combined power control and space-time diversity in mobile cellular communications |
US6122247A (en) | 1997-11-24 | 2000-09-19 | Motorola Inc. | Method for reallocating data in a discrete multi-tone communication system |
JPH11163823A (ja) | 1997-11-26 | 1999-06-18 | Victor Co Of Japan Ltd | 直交周波数分割多重信号伝送方法、送信装置及び受信装置 |
US5936569A (en) | 1997-12-02 | 1999-08-10 | Nokia Telecommunications Oy | Method and arrangement for adjusting antenna pattern |
US6154661A (en) | 1997-12-10 | 2000-11-28 | Arraycomm, Inc. | Transmitting on the downlink using one or more weight vectors determined to achieve a desired radiation pattern |
US6084917A (en) * | 1997-12-16 | 2000-07-04 | Integrated Telecom Express | Circuit for configuring and dynamically adapting data and energy parameters in a multi-channel communications system |
US6175588B1 (en) | 1997-12-30 | 2001-01-16 | Motorola, Inc. | Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system |
US6088387A (en) | 1997-12-31 | 2000-07-11 | At&T Corp. | Multi-channel parallel/serial concatenated convolutional codes and trellis coded modulation encoder/decoder |
EP2154853B1 (en) | 1998-01-06 | 2011-11-16 | Mosaid Technologies Incorporated | Multicarrier modulation system, with variable symbol rate |
JP3724940B2 (ja) | 1998-01-08 | 2005-12-07 | 株式会社東芝 | Ofdmダイバーシチ受信装置 |
US5982327A (en) | 1998-01-12 | 1999-11-09 | Motorola, Inc. | Adaptive array method, device, base station and subscriber unit |
US6608874B1 (en) | 1998-01-12 | 2003-08-19 | Hughes Electronics Corporation | Method and apparatus for quadrature multi-pulse modulation of data for spectrally efficient communication |
EP0930752A3 (en) | 1998-01-14 | 1999-10-20 | Motorola, Inc. | Method for allocating data and power in a discrete multitone communication system |
US5973638A (en) | 1998-01-30 | 1999-10-26 | Micronetics Wireless, Inc. | Smart antenna channel simulator and test system |
EP0938208A1 (en) | 1998-02-22 | 1999-08-25 | Sony International (Europe) GmbH | Multicarrier transmission, compatible with the existing GSM system |
JP3082756B2 (ja) * | 1998-02-27 | 2000-08-28 | 日本電気株式会社 | マルチキャリア伝送システム及びその方法 |
WO1999044379A1 (en) | 1998-02-27 | 1999-09-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Multiple access categorization for mobile station |
US6141388A (en) | 1998-03-11 | 2000-10-31 | Ericsson Inc. | Received signal quality determination method and systems for convolutionally encoded communication channels |
US6058107A (en) | 1998-04-08 | 2000-05-02 | Motorola, Inc. | Method for updating forward power control in a communication system |
US6317466B1 (en) | 1998-04-15 | 2001-11-13 | Lucent Technologies Inc. | Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver |
US6615024B1 (en) | 1998-05-01 | 2003-09-02 | Arraycomm, Inc. | Method and apparatus for determining signatures for calibrating a communication station having an antenna array |
US7123628B1 (en) | 1998-05-06 | 2006-10-17 | Lg Electronics Inc. | Communication system with improved medium access control sub-layer |
US6205410B1 (en) * | 1998-06-01 | 2001-03-20 | Globespan Semiconductor, Inc. | System and method for bit loading with optimal margin assignment |
ATE382216T1 (de) | 1998-06-19 | 2008-01-15 | Ericsson Telefon Ab L M | Rahmensynchronisierungsverfahren und - einrichtungen |
US6795424B1 (en) | 1998-06-30 | 2004-09-21 | Tellabs Operations, Inc. | Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems |
JP2000092009A (ja) | 1998-07-13 | 2000-03-31 | Sony Corp | 通信方法、送信機及び受信機 |
JP3449985B2 (ja) | 1998-07-16 | 2003-09-22 | サムスン エレクトロニクス カンパニー リミテッド | 移動通信システムのパケットデータ処理システム及び方法 |
US6154443A (en) | 1998-08-11 | 2000-11-28 | Industrial Technology Research Institute | FFT-based CDMA RAKE receiver system and method |
US6594620B1 (en) | 1998-08-17 | 2003-07-15 | Aspen Technology, Inc. | Sensor validation apparatus and method |
KR20010106445A (ko) | 1998-08-18 | 2001-11-29 | 추후제출 | 스택 캐리어 이산 다중 톤 통신기술 |
KR100429540B1 (ko) | 1998-08-26 | 2004-08-09 | 삼성전자주식회사 | 이동통신시스템의패킷데이터통신장치및방법 |
US6515617B1 (en) * | 1998-09-01 | 2003-02-04 | Hughes Electronics Corporation | Method and system for position determination using geostationary earth orbit satellite |
DE19842712C1 (de) | 1998-09-17 | 2000-05-04 | Siemens Ag | Verfahren und Anordnung zur Minimierung des Autokorrelationsfehlers bei der Demodulation eines Spreizspektrum-Signals unter Mehrwegeausbreitung |
US6292917B1 (en) | 1998-09-30 | 2001-09-18 | Agere Systems Guardian Corp. | Unequal error protection for digital broadcasting using channel classification |
EP0993212B1 (en) | 1998-10-05 | 2006-05-24 | Sony Deutschland GmbH | Random access channel partitioning scheme for CDMA system |
EP0993211B1 (en) | 1998-10-05 | 2005-01-12 | Sony International (Europe) GmbH | Random access channel partitioning scheme for CDMA system |
US6711121B1 (en) * | 1998-10-09 | 2004-03-23 | At&T Corp. | Orthogonal code division multiplexing for twisted pair channels |
DE59902484D1 (de) * | 1998-10-27 | 2002-10-02 | Siemens Ag | Kanalzuweisungsverfahren und vorrichtung für kodierte und kombinierte informationssätze |
JP4287536B2 (ja) * | 1998-11-06 | 2009-07-01 | パナソニック株式会社 | Ofdm送受信装置及びofdm送受信方法 |
US6178096B1 (en) * | 1998-11-25 | 2001-01-23 | The Whitaker Corporation | Shielding cover having parts held together by latch members |
PL192020B1 (pl) | 1998-12-03 | 2006-08-31 | Fraunhofer Ges Forschung | Sposób i urządzenie do nadawania informacji oraz sposób i urządzenie do odbierania informacji |
GB9827182D0 (en) | 1998-12-10 | 1999-02-03 | Philips Electronics Nv | Radio communication system |
FI108588B (fi) | 1998-12-15 | 2002-02-15 | Nokia Corp | Menetelmä ja radiojärjestelmä digitaalisen signaalin siirtoon |
JP2000244441A (ja) | 1998-12-22 | 2000-09-08 | Matsushita Electric Ind Co Ltd | Ofdm送受信装置 |
US6310909B1 (en) * | 1998-12-23 | 2001-10-30 | Broadcom Corporation | DSL rate adaptation |
US6266528B1 (en) | 1998-12-23 | 2001-07-24 | Arraycomm, Inc. | Performance monitor for antenna arrays |
US6463290B1 (en) | 1999-01-08 | 2002-10-08 | Trueposition, Inc. | Mobile-assisted network based techniques for improving accuracy of wireless location system |
US6348036B1 (en) * | 1999-01-24 | 2002-02-19 | Genzyme Corporation | Surgical retractor and tissue stabilization device |
RU2152132C1 (ru) | 1999-01-26 | 2000-06-27 | Государственное унитарное предприятие Воронежский научно-исследовательский институт связи | Линия радиосвязи с пространственной модуляцией |
JP3619729B2 (ja) | 2000-01-19 | 2005-02-16 | 松下電器産業株式会社 | 無線受信装置および無線受信方法 |
KR100651457B1 (ko) | 1999-02-13 | 2006-11-28 | 삼성전자주식회사 | 부호분할다중접속 이동통신시스템의 불연속 전송모드에서 연속적인 외부순환 전력제어장치 및 방법 |
US6574267B1 (en) | 1999-03-22 | 2003-06-03 | Golden Bridge Technology, Inc. | Rach ramp-up acknowledgement |
US6346910B1 (en) * | 1999-04-07 | 2002-02-12 | Tei Ito | Automatic array calibration scheme for wireless point-to-multipoint communication networks |
US6363267B1 (en) | 1999-04-07 | 2002-03-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Mobile terminal decode failure procedure in a wireless local area network |
CA2371958C (en) | 1999-04-12 | 2006-07-25 | Samsung Electronics Co., Ltd. | Apparatus and method for gated transmission in a cdma communication system |
EP1075093A1 (en) | 1999-08-02 | 2001-02-07 | Interuniversitair Micro-Elektronica Centrum Vzw | A method and apparatus for multi-user transmission |
US6594798B1 (en) | 1999-05-21 | 2003-07-15 | Microsoft Corporation | Receiver-driven layered error correction multicast over heterogeneous packet networks |
US6532562B1 (en) * | 1999-05-21 | 2003-03-11 | Microsoft Corp | Receiver-driven layered error correction multicast over heterogeneous packet networks |
US6594473B1 (en) * | 1999-05-28 | 2003-07-15 | Texas Instruments Incorporated | Wireless system with transmitter having multiple transmit antennas and combining open loop and closed loop transmit diversities |
KR100605978B1 (ko) | 1999-05-29 | 2006-07-28 | 삼성전자주식회사 | 부호분할다중접속 이동통신시스템의 불연속 전송모드에서 연속적인 외부순환 전력제어를 위한 송수신 장치 및 방법 |
US7072410B1 (en) | 1999-06-01 | 2006-07-04 | Peter Monsen | Multiple access system and method for multibeam digital radio systems |
US6141567A (en) | 1999-06-07 | 2000-10-31 | Arraycomm, Inc. | Apparatus and method for beamforming in a changing-interference environment |
US6385264B1 (en) | 1999-06-08 | 2002-05-07 | Qualcomm Incorporated | Method and apparatus for mitigating interference between base stations in a wideband CDMA system |
US6976262B1 (en) | 1999-06-14 | 2005-12-13 | Sun Microsystems, Inc. | Web-based enterprise management with multiple repository capability |
IL141636A0 (en) | 1999-07-08 | 2002-03-10 | Samsung Electronics Co Ltd | Data rate detection device and method for a mobile communication system |
US6163296A (en) | 1999-07-12 | 2000-12-19 | Lockheed Martin Corp. | Calibration and integrated beam control/conditioning system for phased-array antennas |
RU2168278C2 (ru) | 1999-07-16 | 2001-05-27 | Корпорация "Самсунг Электроникс" | Способ произвольного доступа абонентов мобильной станции |
US6532225B1 (en) * | 1999-07-27 | 2003-03-11 | At&T Corp | Medium access control layer for packetized wireless systems |
US7027464B1 (en) | 1999-07-30 | 2006-04-11 | Matsushita Electric Industrial Co., Ltd. | OFDM signal transmission scheme, and OFDM signal transmitter/receiver |
US6067290A (en) | 1999-07-30 | 2000-05-23 | Gigabit Wireless, Inc. | Spatial multiplexing in a cellular network |
JP2001044930A (ja) | 1999-07-30 | 2001-02-16 | Matsushita Electric Ind Co Ltd | 無線通信装置および無線通信方法 |
US6721339B2 (en) | 1999-08-17 | 2004-04-13 | Lucent Technologies Inc. | Method of providing downlink transmit diversity |
US6735188B1 (en) | 1999-08-27 | 2004-05-11 | Tachyon, Inc. | Channel encoding and decoding method and apparatus |
JP4284773B2 (ja) | 1999-09-07 | 2009-06-24 | ソニー株式会社 | 送信装置、受信装置、通信システム、送信方法及び通信方法 |
US6115406A (en) | 1999-09-10 | 2000-09-05 | Interdigital Technology Corporation | Transmission using an antenna array in a CDMA communication system |
US6278726B1 (en) | 1999-09-10 | 2001-08-21 | Interdigital Technology Corporation | Interference cancellation in a spread spectrum communication system |
US6426971B1 (en) | 1999-09-13 | 2002-07-30 | Qualcomm Incorporated | System and method for accurately predicting signal to interference and noise ratio to improve communications system performance |
SG80071A1 (en) | 1999-09-24 | 2001-04-17 | Univ Singapore | Downlink beamforming method |
JP3421671B2 (ja) | 1999-09-30 | 2003-06-30 | 独立行政法人通信総合研究所 | 通信システム、選択装置、送信装置、受信装置、選択方法、送信方法、受信方法、および、情報記録媒体 |
BR0014344A (pt) | 1999-10-02 | 2002-11-05 | Samsung Electronics Co Ltd | Aparelho e método para transmitir dados de controle por um canal num sistema de comunicação cdma |
DE19950005A1 (de) | 1999-10-18 | 2001-04-19 | Bernhard Walke | Verfahren zum Betrieb drahtloser Basisstationen für paketvermittelnde Funksysteme mit garantierter Dienstgüte |
DE19951525C2 (de) | 1999-10-26 | 2002-01-24 | Siemens Ag | Verfahren zum Kalibrieren einer elektronisch phasengesteuerten Gruppenantenne in Funk-Kommunikationssystemen |
US6492942B1 (en) | 1999-11-09 | 2002-12-10 | Com Dev International, Inc. | Content-based adaptive parasitic array antenna system |
JP3416597B2 (ja) | 1999-11-19 | 2003-06-16 | 三洋電機株式会社 | 無線基地局 |
US7088671B1 (en) | 1999-11-24 | 2006-08-08 | Peter Monsen | Multiple access technique for downlink multibeam digital radio systems |
US7110785B1 (en) | 1999-12-03 | 2006-09-19 | Nortel Networks Limited | Performing power control in a mobile communications system |
US6298092B1 (en) | 1999-12-15 | 2001-10-02 | Iospan Wireless, Inc. | Methods of controlling communication parameters of wireless systems |
EP1109326A1 (en) | 1999-12-15 | 2001-06-20 | Lucent Technologies Inc. | Peamble detector for a CDMA receiver |
US6351499B1 (en) | 1999-12-15 | 2002-02-26 | Iospan Wireless, Inc. | Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter |
JP3975629B2 (ja) * | 1999-12-16 | 2007-09-12 | ソニー株式会社 | 画像復号装置及び画像復号方法 |
US6298035B1 (en) | 1999-12-21 | 2001-10-02 | Nokia Networks Oy | Estimation of two propagation channels in OFDM |
JP2001186051A (ja) | 1999-12-24 | 2001-07-06 | Toshiba Corp | データ信号判定回路及び方法 |
WO2001048959A1 (fr) | 1999-12-28 | 2001-07-05 | Ntt Docomo, Inc. | Procede de recherche de trajet, procede d'estimation de canal et dispositif de communication |
US6718160B2 (en) | 1999-12-29 | 2004-04-06 | Airnet Communications Corp. | Automatic configuration of backhaul and groundlink frequencies in a wireless repeater |
US6888809B1 (en) | 2000-01-13 | 2005-05-03 | Lucent Technologies Inc. | Space-time processing for multiple-input, multiple-output, wireless systems |
US7254171B2 (en) | 2000-01-20 | 2007-08-07 | Nortel Networks Limited | Equaliser for digital communications systems and method of equalisation |
JP3581072B2 (ja) * | 2000-01-24 | 2004-10-27 | 株式会社エヌ・ティ・ティ・ドコモ | チャネル構成方法及びその方法を利用する基地局 |
KR100325367B1 (ko) * | 2000-01-28 | 2002-03-04 | 박태진 | 직교 주파수 분할 다중 통신 시스템에서의 비트 오율 측정장치및 방법 |
JP2001217896A (ja) | 2000-01-31 | 2001-08-10 | Matsushita Electric Works Ltd | 無線データ通信システム |
US7003044B2 (en) * | 2000-02-01 | 2006-02-21 | Sasken Communication Technologies Ltd. | Method for allocating bits and power in multi-carrier communication system |
FI117465B (fi) | 2000-02-03 | 2006-10-31 | Danisco Sweeteners Oy | Menetelmä pureskeltavien ytimien kovapinnoittamiseksi |
US6868120B2 (en) * | 2000-02-08 | 2005-03-15 | Clearwire Corporation | Real-time system for measuring the Ricean K-factor |
US6704374B1 (en) | 2000-02-16 | 2004-03-09 | Thomson Licensing S.A. | Local oscillator frequency correction in an orthogonal frequency division multiplexing system |
DE10008653A1 (de) | 2000-02-24 | 2001-09-06 | Siemens Ag | Verbesserungen an einem Funkkommunikationssystem |
US6956814B1 (en) | 2000-02-29 | 2005-10-18 | Worldspace Corporation | Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system |
JP2001244879A (ja) | 2000-03-02 | 2001-09-07 | Matsushita Electric Ind Co Ltd | 送信電力制御装置及びその方法 |
US6963546B2 (en) | 2000-03-15 | 2005-11-08 | Interdigital Technology Corp. | Multi-user detection using an adaptive combination of joint detection and successive interface cancellation |
EP1137217A1 (en) | 2000-03-20 | 2001-09-26 | Telefonaktiebolaget Lm Ericsson | ARQ parameter negociation in a data packet transmission system using link adaptation |
US7149253B2 (en) * | 2000-03-21 | 2006-12-12 | Texas Instruments Incorporated | Wireless communication |
US20020154705A1 (en) | 2000-03-22 | 2002-10-24 | Walton Jay R. | High efficiency high performance communications system employing multi-carrier modulation |
US6952454B1 (en) | 2000-03-22 | 2005-10-04 | Qualcomm, Incorporated | Multiplexing of real time services and non-real time services for OFDM systems |
US6473467B1 (en) | 2000-03-22 | 2002-10-29 | Qualcomm Incorporated | Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system |
DE10014676C2 (de) | 2000-03-24 | 2002-02-07 | Polytrax Inf Technology Ag | Datenübertragung über ein Stromversorgungsnetz |
US7113499B2 (en) | 2000-03-29 | 2006-09-26 | Texas Instruments Incorporated | Wireless communication |
EP1143754B1 (en) | 2000-04-04 | 2007-06-27 | Sony Deutschland GmbH | Event triggered change of access service class in a random access channel |
AU2000238190A1 (en) | 2000-04-07 | 2001-10-23 | Nokia Corporation | Multi-antenna transmission method and system |
US7289570B2 (en) | 2000-04-10 | 2007-10-30 | Texas Instruments Incorporated | Wireless communications |
US6757263B1 (en) | 2000-04-13 | 2004-06-29 | Motorola, Inc. | Wireless repeating subscriber units |
DE60127395T2 (de) | 2000-04-18 | 2007-12-06 | Aware, Inc., Bedford | Datenzuweisung mit änderbaren signal-rauschabstand |
US6751199B1 (en) | 2000-04-24 | 2004-06-15 | Qualcomm Incorporated | Method and apparatus for a rate control in a high data rate communication system |
ATE269616T1 (de) * | 2000-04-25 | 2004-07-15 | Nortel Networks Sa | Drahtloses telekommunikationssystem mit einer reduzierten verzögerung für die datenübermittlung |
JP3414357B2 (ja) | 2000-04-25 | 2003-06-09 | 日本電気株式会社 | Cdma移動通信システムにおける送信電力制御方式 |
US7068628B2 (en) | 2000-05-22 | 2006-06-27 | At&T Corp. | MIMO OFDM system |
US7139324B1 (en) | 2000-06-02 | 2006-11-21 | Nokia Networks Oy | Closed loop feedback system for improved down link performance |
US7512086B2 (en) | 2000-06-12 | 2009-03-31 | Samsung Electronics Co., Ltd | Method of assigning an uplink random access channel in a CDMA mobile communication system |
US6744811B1 (en) | 2000-06-12 | 2004-06-01 | Actelis Networks Inc. | Bandwidth management for DSL modem pool |
US7248841B2 (en) | 2000-06-13 | 2007-07-24 | Agee Brian G | Method and apparatus for optimization of wireless multipoint electromagnetic communication networks |
US6628702B1 (en) | 2000-06-14 | 2003-09-30 | Qualcomm, Incorporated | Method and apparatus for demodulating signals processed in a transmit diversity mode |
US6760313B1 (en) | 2000-06-19 | 2004-07-06 | Qualcomm Incorporated | Method and apparatus for adaptive rate selection in a communication system |
SE519303C2 (sv) | 2000-06-20 | 2003-02-11 | Ericsson Telefon Ab L M | Anordning för smalbandig kommunikation i ett multicarrier- system |
WO2002003557A1 (en) | 2000-06-30 | 2002-01-10 | Iospan Wireless, Inc. | Method and system for mode adaptation in wireless communication |
US6891858B1 (en) | 2000-06-30 | 2005-05-10 | Cisco Technology Inc. | Dynamic modulation of modulation profiles for communication channels in an access network |
CN1140147C (zh) * | 2000-07-01 | 2004-02-25 | 信息产业部电信传输研究所 | 一种外环功率控制的方法和系统 |
DE60117263T2 (de) * | 2000-07-03 | 2006-07-27 | Matsushita Electric Industrial Co., Ltd., Kadoma | Basisstationseinheit und verfahren zur funkkommunikation |
KR100627188B1 (ko) | 2000-07-04 | 2006-09-22 | 에스케이 텔레콤주식회사 | 무선통신 역방향 동기 방식에서의 코드 할당 방법 |
EP2262157A3 (en) | 2000-07-05 | 2011-03-23 | Sony Deutschland Gmbh | Pilot pattern design for a STTD scheme in an OFDM system |
ES2701182T3 (es) | 2000-07-12 | 2019-02-21 | Qualcomm Inc | Procedimiento y aparato para generar señales piloto en un sistema MIMO |
FI109393B (fi) | 2000-07-14 | 2002-07-15 | Nokia Corp | Menetelmä mediavirran enkoodaamiseksi skaalautuvasti, skaalautuva enkooderi ja päätelaite |
ATE536002T1 (de) | 2000-07-17 | 2011-12-15 | Koninkl Philips Electronics Nv | Ungleichgewichtiger fehlerschutz für packete mit variabler länge |
KR100493152B1 (ko) | 2000-07-21 | 2005-06-02 | 삼성전자주식회사 | 이동 통신 시스템에서의 전송 안테나 다이버시티 방법 및이를 위한 기지국 장치 및 이동국 장치 |
EP1176750A1 (en) * | 2000-07-25 | 2002-01-30 | Telefonaktiebolaget L M Ericsson (Publ) | Link quality determination of a transmission link in an OFDM transmission system |
EP1178641B1 (en) | 2000-08-01 | 2007-07-25 | Sony Deutschland GmbH | Frequency reuse scheme for OFDM systems |
US6920192B1 (en) * | 2000-08-03 | 2005-07-19 | Lucent Technologies Inc. | Adaptive antenna array methods and apparatus for use in a multi-access wireless communication system |
EP1316193B1 (en) | 2000-08-03 | 2009-11-25 | Infineon Technologies AG | Dynamically reconfigurable universal transmitter system |
US6582088B2 (en) * | 2000-08-10 | 2003-06-24 | Benq Corporation | Optical path folding apparatus |
DE60031893T2 (de) | 2000-08-10 | 2007-06-21 | Fujitsu Ltd., Kawasaki | Kommunikationseinrichtung mit übertragungs-diversity |
EP1182799A3 (en) | 2000-08-22 | 2002-06-26 | Lucent Technologies Inc. | Method for enhancing mobile cdma communications using space-time transmit diversity |
KR100526499B1 (ko) * | 2000-08-22 | 2005-11-08 | 삼성전자주식회사 | 두 개 이상 안테나를 사용하는 안테나 전송 다이버시티방법 및 장치 |
IT1318790B1 (it) | 2000-08-29 | 2003-09-10 | Cit Alcatel | Metodo per gestire il cambio di allocazione dei time-slot in reti adanello ms-spring di tipo transoceanico. |
JP3886709B2 (ja) | 2000-08-29 | 2007-02-28 | 三菱電機株式会社 | スペクトル拡散受信装置 |
US6985434B2 (en) | 2000-09-01 | 2006-01-10 | Nortel Networks Limited | Adaptive time diversity and spatial diversity for OFDM |
US6937592B1 (en) | 2000-09-01 | 2005-08-30 | Intel Corporation | Wireless communications system that supports multiple modes of operation |
US6850481B2 (en) | 2000-09-01 | 2005-02-01 | Nortel Networks Limited | Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system |
US7233625B2 (en) * | 2000-09-01 | 2007-06-19 | Nortel Networks Limited | Preamble design for multiple input—multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system |
JP2002077098A (ja) | 2000-09-01 | 2002-03-15 | Mitsubishi Electric Corp | 通信装置および通信方法 |
US7009931B2 (en) * | 2000-09-01 | 2006-03-07 | Nortel Networks Limited | Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications |
FR2814014B1 (fr) | 2000-09-14 | 2002-10-11 | Mitsubishi Electric Inf Tech | Methode de detection multi-utilisateur |
US6802035B2 (en) | 2000-09-19 | 2004-10-05 | Intel Corporation | System and method of dynamically optimizing a transmission mode of wirelessly transmitted information |
US6760882B1 (en) | 2000-09-19 | 2004-07-06 | Intel Corporation | Mode selection for data transmission in wireless communication channels based on statistical parameters |
US6650714B2 (en) | 2000-11-30 | 2003-11-18 | Arraycomm, Inc. | Spatial processing and timing estimation using a training sequence in a radio communications system |
US7062294B1 (en) | 2000-09-29 | 2006-06-13 | Arraycomm, Llc. | Downlink transmission in a wireless data communication system having a base station with a smart antenna system |
US7110378B2 (en) | 2000-10-03 | 2006-09-19 | Wisconsin Alumni Research Foundation | Channel aware optimal space-time signaling for wireless communication over wideband multipath channels |
US7016296B2 (en) | 2000-10-16 | 2006-03-21 | Broadcom Corporation | Adaptive modulation for fixed wireless link in cable transmission system |
US6907270B1 (en) | 2000-10-23 | 2005-06-14 | Qualcomm Inc. | Method and apparatus for reduced rank channel estimation in a communications system |
US6369758B1 (en) | 2000-11-01 | 2002-04-09 | Unique Broadband Systems, Inc. | Adaptive antenna array for mobile communication |
JP3553038B2 (ja) | 2000-11-06 | 2004-08-11 | 株式会社エヌ・ティ・ティ・ドコモ | 信号送信方法、信号受信方法、送信装置、受信装置および記録媒体 |
US6768727B1 (en) | 2000-11-09 | 2004-07-27 | Ericsson Inc. | Fast forward link power control for CDMA system |
FR2816796A1 (fr) * | 2000-11-14 | 2002-05-17 | Koninkl Philips Electronics Nv | Appareil telephonique comprenant un ecran de visualisation sur lequel apparaissent des parametres de reglage |
US8634481B1 (en) | 2000-11-16 | 2014-01-21 | Alcatel Lucent | Feedback technique for wireless systems with multiple transmit and receive antennas |
US7006464B1 (en) | 2000-11-17 | 2006-02-28 | Lucent Technologies Inc. | Downlink and uplink channel structures for downlink shared channel system |
US6980601B2 (en) | 2000-11-17 | 2005-12-27 | Broadcom Corporation | Rate adaptation and parameter optimization for multi-band single carrier transmission |
JP3695316B2 (ja) | 2000-11-24 | 2005-09-14 | 株式会社日本自動車部品総合研究所 | スペクトラム拡散受信機の相関検出器 |
US6751480B2 (en) | 2000-12-01 | 2004-06-15 | Lucent Technologies Inc. | Method for simultaneously conveying information to multiple mobiles with multiple antennas |
JP4505677B2 (ja) | 2000-12-06 | 2010-07-21 | ソフトバンクテレコム株式会社 | 送信ダイバーシチ装置および送信電力調整方法 |
US6952426B2 (en) | 2000-12-07 | 2005-10-04 | Nortel Networks Limited | Method and apparatus for the transmission of short data bursts in CDMA/HDR networks |
KR100353641B1 (ko) | 2000-12-21 | 2002-09-28 | 삼성전자 주식회사 | 부호분할다중접속 이동통신시스템의 기지국 전송 안테나다이버시티 장치 및 방법 |
US6850498B2 (en) * | 2000-12-22 | 2005-02-01 | Intel Corporation | Method and system for evaluating a wireless link |
US7050510B2 (en) | 2000-12-29 | 2006-05-23 | Lucent Technologies Inc. | Open-loop diversity technique for systems employing four transmitter antennas |
GB0031841D0 (en) * | 2000-12-29 | 2001-02-14 | Nokia Networks Oy | Interference power estimation for adaptive antenna system |
US20020085641A1 (en) | 2000-12-29 | 2002-07-04 | Motorola, Inc | Method and system for interference averaging in a wireless communication system |
US6987819B2 (en) * | 2000-12-29 | 2006-01-17 | Motorola, Inc. | Method and device for multiple input/multiple output transmit and receive weights for equal-rate data streams |
US6731668B2 (en) | 2001-01-05 | 2004-05-04 | Qualcomm Incorporated | Method and system for increased bandwidth efficiency in multiple input—multiple output channels |
EP1223776A1 (en) * | 2001-01-12 | 2002-07-17 | Siemens Information and Communication Networks S.p.A. | A collision free access scheduling in cellular TDMA-CDMA networks |
US6693992B2 (en) * | 2001-01-16 | 2004-02-17 | Mindspeed Technologies | Line probe signal and method of use |
US6801790B2 (en) | 2001-01-17 | 2004-10-05 | Lucent Technologies Inc. | Structure for multiple antenna configurations |
US7164669B2 (en) | 2001-01-19 | 2007-01-16 | Adaptix, Inc. | Multi-carrier communication with time division multiplexing and carrier-selective loading |
US7054662B2 (en) | 2001-01-24 | 2006-05-30 | Qualcomm, Inc. | Method and system for forward link beam forming in wireless communications |
JP2002232943A (ja) | 2001-01-29 | 2002-08-16 | Sony Corp | データ送信処理方法、データ受信処理方法、送信機、受信機、およびセルラー無線通信システム |
GB0102316D0 (en) * | 2001-01-30 | 2001-03-14 | Koninkl Philips Electronics Nv | Radio communication system |
US6961388B2 (en) | 2001-02-01 | 2005-11-01 | Qualcomm, Incorporated | Coding scheme for a wireless communication system |
US6885654B2 (en) | 2001-02-06 | 2005-04-26 | Interdigital Technology Corporation | Low complexity data detection using fast fourier transform of channel correlation matrix |
US7120134B2 (en) | 2001-02-15 | 2006-10-10 | Qualcomm, Incorporated | Reverse link channel architecture for a wireless communication system |
US6975868B2 (en) | 2001-02-21 | 2005-12-13 | Qualcomm Incorporated | Method and apparatus for IS-95B reverse link supplemental code channel frame validation and fundamental code channel rate decision improvement |
US7006483B2 (en) * | 2001-02-23 | 2006-02-28 | Ipr Licensing, Inc. | Qualifying available reverse link coding rates from access channel power setting |
WO2002069523A1 (en) | 2001-02-26 | 2002-09-06 | Magnolia Broadband, Inc | Smart antenna based spectrum multiplexing using a pilot signal |
GB0105019D0 (en) | 2001-03-01 | 2001-04-18 | Koninkl Philips Electronics Nv | Antenna diversity in a wireless local area network |
US7039125B2 (en) | 2001-03-12 | 2006-05-02 | Analog Devices, Inc. | Equalized SNR power back-off |
EP1241824A1 (en) | 2001-03-14 | 2002-09-18 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Multiplexing method in a multicarrier transmit diversity system |
US6763244B2 (en) | 2001-03-15 | 2004-07-13 | Qualcomm Incorporated | Method and apparatus for adjusting power control setpoint in a wireless communication system |
US7046746B1 (en) | 2001-03-19 | 2006-05-16 | Cisco Systems Wireless Networking (Australia) Pty Limited | Adaptive Viterbi decoder for a wireless data network receiver |
US6478422B1 (en) | 2001-03-19 | 2002-11-12 | Richard A. Hansen | Single bifocal custom shooters glasses |
US6771706B2 (en) * | 2001-03-23 | 2004-08-03 | Qualcomm Incorporated | Method and apparatus for utilizing channel state information in a wireless communication system |
US7248638B1 (en) | 2001-03-23 | 2007-07-24 | Lsi Logic | Transmit antenna multi-mode tracking |
US7386076B2 (en) | 2001-03-29 | 2008-06-10 | Texas Instruments Incorporated | Space time encoded wireless communication system with multipath resolution receivers |
US8290098B2 (en) | 2001-03-30 | 2012-10-16 | Texas Instruments Incorporated | Closed loop multiple transmit, multiple receive antenna wireless communication system |
GB2373973B (en) | 2001-03-30 | 2003-06-11 | Toshiba Res Europ Ltd | Adaptive antenna |
US20020176485A1 (en) * | 2001-04-03 | 2002-11-28 | Hudson John E. | Multi-cast communication system and method of estimating channel impulse responses therein |
US6785513B1 (en) | 2001-04-05 | 2004-08-31 | Cowave Networks, Inc. | Method and system for clustered wireless networks |
US6859503B2 (en) | 2001-04-07 | 2005-02-22 | Motorola, Inc. | Method and system in a transceiver for controlling a multiple-input, multiple-output communications channel |
KR100510434B1 (ko) | 2001-04-09 | 2005-08-26 | 니폰덴신뎅와 가부시키가이샤 | Ofdm신호전달 시스템, ofdm신호 송신장치 및ofdm신호 수신장치 |
FR2823620B1 (fr) | 2001-04-12 | 2003-08-15 | France Telecom | Procede de codage/decodage d'un flux de donnees numeriques codees avec entrelacement sur bits en emission et en reception multiple en presence d'interference intersymboles et systeme correspondant |
US7310304B2 (en) | 2001-04-24 | 2007-12-18 | Bae Systems Information And Electronic Systems Integration Inc. | Estimating channel parameters in multi-input, multi-output (MIMO) systems |
GB0110223D0 (en) | 2001-04-26 | 2001-06-20 | Sensor Highway Ltd | Method and apparatus for leak detection and location |
FI20010874A (fi) | 2001-04-26 | 2002-10-27 | Nokia Corp | Tiedonsiirtomenetelmä ja -laitteisto |
US6611231B2 (en) | 2001-04-27 | 2003-08-26 | Vivato, Inc. | Wireless packet switched communication systems and networks using adaptively steered antenna arrays |
US7133459B2 (en) * | 2001-05-01 | 2006-11-07 | Texas Instruments Incorporated | Space-time transmit diversity |
EP1255369A1 (en) | 2001-05-04 | 2002-11-06 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Link adaptation for wireless MIMO transmission schemes |
US7480278B2 (en) * | 2001-05-04 | 2009-01-20 | Nokia Corporation | Admission control with directional antenna |
DE10122788A1 (de) | 2001-05-10 | 2002-06-06 | Basf Ag | Verfahren der kristallisativen Reinigung einer Roh-Schmelze wenigstens eines Monomeren |
US6785341B2 (en) | 2001-05-11 | 2004-08-31 | Qualcomm Incorporated | Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information |
US7072413B2 (en) | 2001-05-17 | 2006-07-04 | Qualcomm, Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion |
US6751187B2 (en) | 2001-05-17 | 2004-06-15 | Qualcomm Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission |
US6718493B1 (en) | 2001-05-17 | 2004-04-06 | 3Com Corporation | Method and apparatus for selection of ARQ parameters and estimation of improved communications |
US7688899B2 (en) | 2001-05-17 | 2010-03-30 | Qualcomm Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion |
US7492737B1 (en) * | 2001-05-23 | 2009-02-17 | Nortel Networks Limited | Service-driven air interface protocol architecture for wireless systems |
ES2188373B1 (es) | 2001-05-25 | 2004-10-16 | Diseño De Sistemas En Silencio, S.A. | Procedimiento de optimizacion de la comunicacion para sistema de transmision digital ofdm multiusuario sobre red electrica. |
US6920194B2 (en) | 2001-05-29 | 2005-07-19 | Tioga Technologies, Ltd. | Method and system for detecting, timing, and correcting impulse noise |
US7158563B2 (en) * | 2001-06-01 | 2007-01-02 | The Board Of Trustees Of The Leland Stanford Junior University | Dynamic digital communication system control |
US20020183010A1 (en) | 2001-06-05 | 2002-12-05 | Catreux Severine E. | Wireless communication systems with adaptive channelization and link adaptation |
GB2376315B (en) | 2001-06-05 | 2003-08-06 | 3Com Corp | Data bus system including posted reads and writes |
US7190749B2 (en) | 2001-06-06 | 2007-03-13 | Qualcomm Incorporated | Method and apparatus for canceling pilot interference in a wireless communication system |
US20020193146A1 (en) | 2001-06-06 | 2002-12-19 | Mark Wallace | Method and apparatus for antenna diversity in a wireless communication system |
DE60127944T2 (de) | 2001-06-08 | 2007-09-06 | Sony Deutschland Gmbh | Mehrträgersystem mit adaptiver bitweiser verschachtelung |
US20030012308A1 (en) * | 2001-06-13 | 2003-01-16 | Sampath Hemanth T. | Adaptive channel estimation for wireless systems |
US7027523B2 (en) * | 2001-06-22 | 2006-04-11 | Qualcomm Incorporated | Method and apparatus for transmitting data in a time division duplexed (TDD) communication system |
CN1547861A (zh) | 2001-06-27 | 2004-11-17 | ���˹���Ѷ��� | 无线通信系统中控制信息的传递 |
US6842460B1 (en) * | 2001-06-27 | 2005-01-11 | Nokia Corporation | Ad hoc network discovery menu |
US6751444B1 (en) | 2001-07-02 | 2004-06-15 | Broadstorm Telecommunications, Inc. | Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems |
FR2827731B1 (fr) | 2001-07-23 | 2004-01-23 | Nexo | Haut-parleur a radiation directe et rayonnement optimise |
US6996380B2 (en) * | 2001-07-26 | 2006-02-07 | Ericsson Inc. | Communication system employing transmit macro-diversity |
US6738020B1 (en) | 2001-07-31 | 2004-05-18 | Arraycomm, Inc. | Estimation of downlink transmission parameters in a radio communications system with an adaptive antenna array |
DE60134641D1 (de) * | 2001-08-13 | 2008-08-14 | Motorola Inc | Drahtlose Kommunikation mit Sendediversität |
KR100703295B1 (ko) * | 2001-08-18 | 2007-04-03 | 삼성전자주식회사 | 이동통신시스템에서 안테나 어레이를 이용한 데이터 송/수신 장치 및 방법 |
US20030039317A1 (en) * | 2001-08-21 | 2003-02-27 | Taylor Douglas Hamilton | Method and apparatus for constructing a sub-carrier map |
FR2828981B1 (fr) | 2001-08-23 | 2004-05-21 | Commissariat Energie Atomique | Creuset a chauffage par induction et refroidissement par caloducs |
EP1289328A1 (en) * | 2001-08-28 | 2003-03-05 | Lucent Technologies Inc. | A method of sending control information in a wireless telecommunications network, and corresponding apparatus |
US6990059B1 (en) * | 2001-09-05 | 2006-01-24 | Cisco Technology, Inc. | Interference mitigation in a wireless communication system |
FR2829326A1 (fr) | 2001-09-06 | 2003-03-07 | France Telecom | Procede et systeme de reception iterative sous optimale pour systeme de transmission haut debit cdma |
US7149254B2 (en) | 2001-09-06 | 2006-12-12 | Intel Corporation | Transmit signal preprocessing based on transmit antennae correlations for multiple antennae systems |
US7133070B2 (en) | 2001-09-20 | 2006-11-07 | Eastman Kodak Company | System and method for deciding when to correct image-specific defects based on camera, scene, display and demographic data |
US7024163B1 (en) | 2001-09-28 | 2006-04-04 | Arraycomm Llc | Method and apparatus for adjusting feedback of a remote unit |
US6788948B2 (en) | 2001-09-28 | 2004-09-07 | Arraycomm, Inc. | Frequency dependent calibration of a wideband radio system using narrowband channels |
US7277679B1 (en) | 2001-09-28 | 2007-10-02 | Arraycomm, Llc | Method and apparatus to provide multiple-mode spatial processing to a terminal unit |
US7035359B2 (en) | 2001-10-11 | 2006-04-25 | Telefonaktiebolaget L.M. Ericsson | Methods and apparatus for demodulation of a signal in a signal slot subject to a discontinuous interference signal |
US7548506B2 (en) | 2001-10-17 | 2009-06-16 | Nortel Networks Limited | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
US7773699B2 (en) * | 2001-10-17 | 2010-08-10 | Nortel Networks Limited | Method and apparatus for channel quality measurements |
US7116652B2 (en) | 2001-10-18 | 2006-10-03 | Lucent Technologies Inc. | Rate control technique for layered architectures with multiple transmit and receive antennas |
US7349667B2 (en) | 2001-10-19 | 2008-03-25 | Texas Instruments Incorporated | Simplified noise estimation and/or beamforming for wireless communications |
US20030119452A1 (en) | 2001-10-19 | 2003-06-26 | Samsung Electronics Co., Ltd. | Apparatus and method for controlling transmission power of downlink data channel in a mobile communication system supporting MBMS |
JP3607238B2 (ja) | 2001-10-22 | 2005-01-05 | 株式会社東芝 | Ofdm信号受信システム |
WO2003039031A1 (fr) | 2001-10-31 | 2003-05-08 | Matsushita Electric Industrial Co., Ltd. | Dispositif d'emission radio et procede de communication radio |
US7218684B2 (en) | 2001-11-02 | 2007-05-15 | Interdigital Technology Corporation | Method and system for code reuse and capacity enhancement using null steering |
US7164649B2 (en) | 2001-11-02 | 2007-01-16 | Qualcomm, Incorporated | Adaptive rate control for OFDM communication system |
US20030125040A1 (en) | 2001-11-06 | 2003-07-03 | Walton Jay R. | Multiple-access multiple-input multiple-output (MIMO) communication system |
US8018903B2 (en) | 2001-11-21 | 2011-09-13 | Texas Instruments Incorporated | Closed-loop transmit diversity scheme in frequency selective multipath channels |
CN101188594B (zh) | 2001-11-28 | 2016-07-06 | 富士通株式会社 | 一种发射设备 |
US7346126B2 (en) | 2001-11-28 | 2008-03-18 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for channel estimation using plural channels |
US7263119B1 (en) | 2001-11-29 | 2007-08-28 | Marvell International Ltd. | Decoding method and apparatus |
CN100583860C (zh) | 2001-11-29 | 2010-01-20 | 高通股份有限公司 | 用预编码确定对数似然比的方法和装置 |
US7154936B2 (en) | 2001-12-03 | 2006-12-26 | Qualcomm, Incorporated | Iterative detection and decoding for a MIMO-OFDM system |
US6760388B2 (en) | 2001-12-07 | 2004-07-06 | Qualcomm Incorporated | Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems |
US7155171B2 (en) | 2001-12-12 | 2006-12-26 | Saraband Wireless | Vector network analyzer applique for adaptive communications in wireless networks |
US20030112745A1 (en) * | 2001-12-17 | 2003-06-19 | Xiangyang Zhuang | Method and system of operating a coded OFDM communication system |
US6788236B2 (en) | 2001-12-18 | 2004-09-07 | Globespanvirata, Inc. | Method and system for implementing a sigma delta analog-to-digital converter |
US7099398B1 (en) | 2001-12-18 | 2006-08-29 | Vixs, Inc. | Method and apparatus for establishing non-standard data rates in a wireless communication system |
JP4052835B2 (ja) | 2001-12-28 | 2008-02-27 | 株式会社日立製作所 | 多地点中継を行う無線伝送システム及びそれに使用する無線装置 |
US7573805B2 (en) * | 2001-12-28 | 2009-08-11 | Motorola, Inc. | Data transmission and reception method and apparatus |
CA2366397A1 (en) | 2001-12-31 | 2003-06-30 | Tropic Networks Inc. | An interface for data transfer between integrated circuits |
US7209433B2 (en) | 2002-01-07 | 2007-04-24 | Hitachi, Ltd. | Channel estimation and compensation techniques for use in frequency division multiplexed systems |
US7020110B2 (en) * | 2002-01-08 | 2006-03-28 | Qualcomm Incorporated | Resource allocation for MIMO-OFDM communication systems |
US7020482B2 (en) | 2002-01-23 | 2006-03-28 | Qualcomm Incorporated | Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems |
US7058116B2 (en) | 2002-01-25 | 2006-06-06 | Intel Corporation | Receiver architecture for CDMA receiver downlink |
KR100547845B1 (ko) | 2002-02-07 | 2006-01-31 | 삼성전자주식회사 | 고속 순방향 패킷 접속 방식을 사용하는 통신 시스템에서서빙 고속 공통 제어 채널 셋 정보를 송수신하는 장치 및방법 |
US7046978B2 (en) | 2002-02-08 | 2006-05-16 | Qualcomm, Inc. | Method and apparatus for transmit pre-correction in wireless communications |
US6980800B2 (en) | 2002-02-12 | 2005-12-27 | Hughes Network Systems | System and method for providing contention channel organization for broadband satellite access in a communications network |
US7292854B2 (en) | 2002-02-15 | 2007-11-06 | Lucent Technologies Inc. | Express signaling in a wireless communication system |
US7076263B2 (en) | 2002-02-19 | 2006-07-11 | Qualcomm, Incorporated | Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systems |
US20030162519A1 (en) | 2002-02-26 | 2003-08-28 | Martin Smith | Radio communications device |
US6862271B2 (en) | 2002-02-26 | 2005-03-01 | Qualcomm Incorporated | Multiple-input, multiple-output (MIMO) systems with multiple transmission modes |
US6959171B2 (en) | 2002-02-28 | 2005-10-25 | Intel Corporation | Data transmission rate control |
US6636568B2 (en) | 2002-03-01 | 2003-10-21 | Qualcomm | Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system |
US6687492B1 (en) | 2002-03-01 | 2004-02-03 | Cognio, Inc. | System and method for antenna diversity using joint maximal ratio combining |
US6873651B2 (en) * | 2002-03-01 | 2005-03-29 | Cognio, Inc. | System and method for joint maximal ratio combining using time-domain signal processing |
GB2386519B (en) | 2002-03-12 | 2004-05-26 | Toshiba Res Europ Ltd | Adaptive Multicarrier Communication |
US20040047284A1 (en) * | 2002-03-13 | 2004-03-11 | Eidson Donald Brian | Transmit diversity framing structure for multipath channels |
US7042858B1 (en) | 2002-03-22 | 2006-05-09 | Jianglei Ma | Soft handoff for OFDM |
JP3561510B2 (ja) | 2002-03-22 | 2004-09-02 | 松下電器産業株式会社 | 基地局装置及びパケット伝送方法 |
US7012978B2 (en) * | 2002-03-26 | 2006-03-14 | Intel Corporation | Robust multiple chain receiver |
US20040198276A1 (en) | 2002-03-26 | 2004-10-07 | Jose Tellado | Multiple channel wireless receiver |
US7197084B2 (en) * | 2002-03-27 | 2007-03-27 | Qualcomm Incorporated | Precoding for a multipath channel in a MIMO system |
KR100456693B1 (ko) | 2002-03-28 | 2004-11-10 | 삼성전자주식회사 | 다중채널 통신 시스템의 비트 할당을 최적화하여 셋업시간을 최소화하는 방법 |
US20030186650A1 (en) | 2002-03-29 | 2003-10-02 | Jung-Tao Liu | Closed loop multiple antenna system |
US7224704B2 (en) | 2002-04-01 | 2007-05-29 | Texas Instruments Incorporated | Wireless network scheduling data frames including physical layer configuration |
US7099377B2 (en) | 2002-04-03 | 2006-08-29 | Stmicroelectronics N.V. | Method and device for interference cancellation in a CDMA wireless communication system |
US7020226B1 (en) * | 2002-04-04 | 2006-03-28 | Nortel Networks Limited | I/Q distortion compensation for the reception of OFDM signals |
US6850741B2 (en) | 2002-04-04 | 2005-02-01 | Agency For Science, Technology And Research | Method for selecting switched orthogonal beams for downlink diversity transmission |
WO2003088540A1 (en) | 2002-04-05 | 2003-10-23 | Flarion Technologies, Inc. | Phase sequences for timing and access signals |
US7103325B1 (en) | 2002-04-05 | 2006-09-05 | Nortel Networks Limited | Adaptive modulation and coding |
US7623871B2 (en) | 2002-04-24 | 2009-11-24 | Qualcomm Incorporated | Position determination for a wireless terminal in a hybrid position determination system |
US7876726B2 (en) | 2002-04-29 | 2011-01-25 | Texas Instruments Incorporated | Adaptive allocation of communications link channels to I- or Q-subchannel |
US6690660B2 (en) * | 2002-05-22 | 2004-02-10 | Interdigital Technology Corporation | Adaptive algorithm for a Cholesky approximation |
US7327800B2 (en) * | 2002-05-24 | 2008-02-05 | Vecima Networks Inc. | System and method for data detection in wireless communication systems |
US6862440B2 (en) * | 2002-05-29 | 2005-03-01 | Intel Corporation | Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration |
US7421039B2 (en) | 2002-06-04 | 2008-09-02 | Lucent Technologies Inc. | Method and system employing antenna arrays |
KR100498326B1 (ko) | 2002-06-18 | 2005-07-01 | 엘지전자 주식회사 | 이동통신 단말기의 적응 변조 코딩 장치 및 방법 |
US7184713B2 (en) * | 2002-06-20 | 2007-02-27 | Qualcomm, Incorporated | Rate control for multi-channel communication systems |
US7095709B2 (en) * | 2002-06-24 | 2006-08-22 | Qualcomm, Incorporated | Diversity transmission modes for MIMO OFDM communication systems |
US7613248B2 (en) | 2002-06-24 | 2009-11-03 | Qualcomm Incorporated | Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems |
US7359313B2 (en) | 2002-06-24 | 2008-04-15 | Agere Systems Inc. | Space-time bit-interleaved coded modulation for wideband transmission |
US7551546B2 (en) | 2002-06-27 | 2009-06-23 | Nortel Networks Limited | Dual-mode shared OFDM methods/transmitters, receivers and systems |
DE60311464T2 (de) | 2002-06-27 | 2007-08-30 | Koninklijke Philips Electronics N.V. | Messung von kanaleigenschaften in einem kommunikationssystem |
US7342912B1 (en) * | 2002-06-28 | 2008-03-11 | Arraycomm, Llc. | Selection of user-specific transmission parameters for optimization of transmit performance in wireless communications using a common pilot channel |
EP1379020A1 (en) | 2002-07-03 | 2004-01-07 | National University Of Singapore | A wireless communication apparatus and method |
US7702035B2 (en) | 2002-07-03 | 2010-04-20 | Freescale Semiconductor, Inc. | Searching method and apparatus for processing digital communication signals |
US20040017785A1 (en) * | 2002-07-16 | 2004-01-29 | Zelst Allert Van | System for transporting multiple radio frequency signals of a multiple input, multiple output wireless communication system to/from a central processing base station |
US6683916B1 (en) * | 2002-07-17 | 2004-01-27 | Philippe Jean-Marc Sartori | Adaptive modulation/coding and power allocation system |
US6885708B2 (en) | 2002-07-18 | 2005-04-26 | Motorola, Inc. | Training prefix modulation method and receiver |
KR20040011653A (ko) | 2002-07-29 | 2004-02-11 | 삼성전자주식회사 | 채널 특성에 적응적인 직교 주파수 분할 다중 통신 방법및 장치 |
CN102655430A (zh) * | 2002-07-30 | 2012-09-05 | 美商智慧财产权授权股份有限公司 | 通过信道传送信号的方法和无线电通信装置 |
US6961595B2 (en) | 2002-08-08 | 2005-11-01 | Flarion Technologies, Inc. | Methods and apparatus for operating mobile nodes in multiple states |
US7653415B2 (en) * | 2002-08-21 | 2010-01-26 | Broadcom Corporation | Method and system for increasing data rate in a mobile terminal using spatial multiplexing for DVB-H communication |
US6970722B1 (en) | 2002-08-22 | 2005-11-29 | Cisco Technology, Inc. | Array beamforming with wide nulls |
EP1392004B1 (en) | 2002-08-22 | 2009-01-21 | Interuniversitair Microelektronica Centrum Vzw | Method for multi-user MIMO transmission and apparatuses suited therefore |
US20040037257A1 (en) | 2002-08-23 | 2004-02-26 | Koninklijke Philips Electronics N.V. | Method and apparatus for assuring quality of service in wireless local area networks |
US6940917B2 (en) * | 2002-08-27 | 2005-09-06 | Qualcomm, Incorporated | Beam-steering and beam-forming for wideband MIMO/MISO systems |
US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
AU2002330691A1 (en) | 2002-09-06 | 2004-03-29 | Nokia Corporation | Antenna selection method |
US7260153B2 (en) | 2002-09-09 | 2007-08-21 | Mimopro Ltd. | Multi input multi output wireless communication method and apparatus providing extended range and extended rate across imperfectly estimated channels |
US20040052228A1 (en) * | 2002-09-16 | 2004-03-18 | Jose Tellado | Method and system of frequency and time synchronization of a transceiver to signals received by the transceiver |
US7426176B2 (en) | 2002-09-30 | 2008-09-16 | Lucent Technologies Inc. | Method of power allocation and rate control in OFDMA systems |
US6850511B2 (en) | 2002-10-15 | 2005-02-01 | Intech 21, Inc. | Timely organized ad hoc network and protocol for timely organized ad hoc network |
US7961774B2 (en) | 2002-10-15 | 2011-06-14 | Texas Instruments Incorporated | Multipath interference-resistant receivers for closed-loop transmit diversity (CLTD) in code-division multiple access (CDMA) systems |
US20040121730A1 (en) * | 2002-10-16 | 2004-06-24 | Tamer Kadous | Transmission scheme for multi-carrier MIMO systems |
US7518997B2 (en) | 2002-10-22 | 2009-04-14 | Texas Instruments Incorporated | Wireless mobile communication stations for operation in non-exclusive spectrum |
US7453844B1 (en) | 2002-10-22 | 2008-11-18 | Hong Kong Applied Science and Technology Research Institute, Co., Ltd. | Dynamic allocation of channels in a wireless network |
US8134976B2 (en) | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US8170513B2 (en) * | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
BR0315664A (pt) | 2002-10-25 | 2005-08-30 | Qualcomm Inc | Detecção e demodulação de dados para sistemas de comunicação sem fio |
US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US8570988B2 (en) | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US7151809B2 (en) * | 2002-10-25 | 2006-12-19 | Qualcomm, Incorporated | Channel estimation and spatial processing for TDD MIMO systems |
US7324429B2 (en) * | 2002-10-25 | 2008-01-29 | Qualcomm, Incorporated | Multi-mode terminal in a wireless MIMO system |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
US7002900B2 (en) | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
EP1554831B1 (en) | 2002-10-26 | 2013-05-22 | Electronics and Telecommunications Research Institute | Frequency hopping ofdma method using symbols of comb pattern |
EP1416688A1 (en) | 2002-10-31 | 2004-05-06 | Motorola Inc. | Iterative channel estimation in multicarrier receivers |
US7317750B2 (en) * | 2002-10-31 | 2008-01-08 | Lot 41 Acquisition Foundation, Llc | Orthogonal superposition coding for direct-sequence communications |
US7280625B2 (en) | 2002-12-11 | 2007-10-09 | Qualcomm Incorporated | Derivation of eigenvectors for spatial processing in MIMO communication systems |
US7280467B2 (en) | 2003-01-07 | 2007-10-09 | Qualcomm Incorporated | Pilot transmission schemes for wireless multi-carrier communication systems |
US7058367B1 (en) | 2003-01-31 | 2006-06-06 | At&T Corp. | Rate-adaptive methods for communicating over multiple input/multiple output wireless systems |
US7583637B2 (en) | 2003-01-31 | 2009-09-01 | Alcatel-Lucent Usa Inc. | Methods of controlling data rate in wireless communications systems |
US20040176097A1 (en) | 2003-02-06 | 2004-09-09 | Fiona Wilson | Allocation of sub channels of MIMO channels of a wireless network |
EP1447934A1 (en) | 2003-02-12 | 2004-08-18 | Institut Eurecom G.I.E. | Transmission and reception diversity process for wireless communications |
JP2004266586A (ja) | 2003-03-03 | 2004-09-24 | Hitachi Ltd | 移動通信システムのデータ送受信方法 |
JP4250002B2 (ja) | 2003-03-05 | 2009-04-08 | 富士通株式会社 | 適応型変調伝送システム及び適応型変調制御方法 |
US6927728B2 (en) | 2003-03-13 | 2005-08-09 | Motorola, Inc. | Method and apparatus for multi-antenna transmission |
US7822140B2 (en) | 2003-03-17 | 2010-10-26 | Broadcom Corporation | Multi-antenna communication systems utilizing RF-based and baseband signal weighting and combining |
US7885228B2 (en) | 2003-03-20 | 2011-02-08 | Qualcomm Incorporated | Transmission mode selection for data transmission in a multi-channel communication system |
JP4259897B2 (ja) | 2003-03-25 | 2009-04-30 | シャープ株式会社 | 無線データ伝送システム及び無線データ送受信装置 |
US7242727B2 (en) | 2003-03-31 | 2007-07-10 | Lucent Technologies Inc. | Method of determining transmit power for transmit eigenbeams in a multiple-input multiple-output communications system |
JP4390636B2 (ja) | 2003-06-11 | 2009-12-24 | 株式会社エヌ・ティ・ティ・ドコモ | Ofdm信号フレーム生成器、送信機、信号伝送システム及びofdm信号フレーム生成方法 |
US7403503B2 (en) | 2003-07-09 | 2008-07-22 | Interdigital Technology Corporation | Resource allocation in wireless communication systems |
JP2007532022A (ja) | 2003-07-11 | 2007-11-08 | クゥアルコム・インコーポレイテッド | 無線通信システムのための動的な共用順方向リンク・チャンネル |
WO2005014820A1 (fr) | 2003-08-08 | 2005-02-17 | Si Chuan Heben Biotic Engineering Co. Ltd. | 5-enolpyruvyl-3-phosphoshikimate synthase a bioresistance eleve au glyphosate et sequence de codage |
US7065144B2 (en) * | 2003-08-27 | 2006-06-20 | Qualcomm Incorporated | Frequency-independent spatial processing for wideband MISO and MIMO systems |
ATE487291T1 (de) * | 2003-08-27 | 2010-11-15 | Wavion Ltd | Wlan-kapazitäts-erweiterung durch verwendung von sdm |
US7356089B2 (en) | 2003-09-05 | 2008-04-08 | Nortel Networks Limited | Phase offset spatial multiplexing |
KR100995031B1 (ko) | 2003-10-01 | 2010-11-19 | 엘지전자 주식회사 | 다중입력 다중출력 시스템에 적용되는 신호 전송 제어 방법 |
US8233462B2 (en) | 2003-10-15 | 2012-07-31 | Qualcomm Incorporated | High speed media access control and direct link protocol |
US8483105B2 (en) | 2003-10-15 | 2013-07-09 | Qualcomm Incorporated | High speed media access control |
US8842657B2 (en) | 2003-10-15 | 2014-09-23 | Qualcomm Incorporated | High speed media access control with legacy system interoperability |
US7508748B2 (en) | 2003-10-24 | 2009-03-24 | Qualcomm Incorporated | Rate selection for a multi-carrier MIMO system |
JP2007509586A (ja) | 2003-10-24 | 2007-04-12 | クゥアルコム・インコーポレイテッド | マルチ−キャリア通信システムにおける複数データストリームの周波数分割多重方式 |
US7616698B2 (en) | 2003-11-04 | 2009-11-10 | Atheros Communications, Inc. | Multiple-input multiple output system and method |
US7298805B2 (en) | 2003-11-21 | 2007-11-20 | Qualcomm Incorporated | Multi-antenna transmission for spatial division multiple access |
US7532563B1 (en) | 2003-11-25 | 2009-05-12 | Marvell International Ltd. | Mechanism to improve quality of channel estimates in OFDM transmissions |
US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
US7231184B2 (en) | 2003-12-05 | 2007-06-12 | Texas Instruments Incorporated | Low overhead transmit channel estimation |
EP1542488A1 (en) | 2003-12-12 | 2005-06-15 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for allocating a pilot signal adapted to the channel characteristics |
JP4425925B2 (ja) | 2003-12-27 | 2010-03-03 | 韓國電子通信研究院 | 固有ビーム形成技術を使用するmimo−ofdmシステム |
US7333556B2 (en) * | 2004-01-12 | 2008-02-19 | Intel Corporation | System and method for selecting data rates to provide uniform bit loading of subcarriers of a multicarrier communication channel |
JP2005223829A (ja) | 2004-02-09 | 2005-08-18 | Nec Electronics Corp | 分数分周回路及びこれを用いたデータ伝送装置 |
US7206354B2 (en) | 2004-02-19 | 2007-04-17 | Qualcomm Incorporated | Calibration of downlink and uplink channel responses in a wireless MIMO communication system |
US7746886B2 (en) | 2004-02-19 | 2010-06-29 | Broadcom Corporation | Asymmetrical MIMO wireless communications |
US7274734B2 (en) | 2004-02-20 | 2007-09-25 | Aktino, Inc. | Iterative waterfiling with explicit bandwidth constraints |
US7848442B2 (en) | 2004-04-02 | 2010-12-07 | Lg Electronics Inc. | Signal processing apparatus and method in multi-input/multi-output communications systems |
US7486740B2 (en) | 2004-04-02 | 2009-02-03 | Qualcomm Incorporated | Calibration of transmit and receive chains in a MIMO communication system |
US7110463B2 (en) | 2004-06-30 | 2006-09-19 | Qualcomm, Incorporated | Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system |
US7606319B2 (en) | 2004-07-15 | 2009-10-20 | Nokia Corporation | Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels |
US20060018247A1 (en) * | 2004-07-22 | 2006-01-26 | Bas Driesen | Method and apparatus for space interleaved communication in a multiple antenna communication system |
US7599443B2 (en) | 2004-09-13 | 2009-10-06 | Nokia Corporation | Method and apparatus to balance maximum information rate with quality of service in a MIMO system |
KR100905605B1 (ko) * | 2004-09-24 | 2009-07-02 | 삼성전자주식회사 | 직교주파수분할다중화 다중입출력 통신 시스템의 전송 방법 |
TWI296753B (en) | 2004-10-26 | 2008-05-11 | Via Tech Inc | Usb control circuit for saving power and the method thereof |
PL1829262T3 (pl) | 2004-11-16 | 2018-08-31 | Qualcomm Incorporated | Kontrola szybkości w zamkniętej pętli dla systemu komunikacji MIMO |
US8498215B2 (en) | 2004-11-16 | 2013-07-30 | Qualcomm Incorporated | Open-loop rate control for a TDD communication system |
US7525988B2 (en) | 2005-01-17 | 2009-04-28 | Broadcom Corporation | Method and system for rate selection algorithm to maximize throughput in closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system |
US7466749B2 (en) | 2005-05-12 | 2008-12-16 | Qualcomm Incorporated | Rate selection with margin sharing |
US7603141B2 (en) | 2005-06-02 | 2009-10-13 | Qualcomm, Inc. | Multi-antenna station with distributed antennas |
US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
US8543070B2 (en) | 2006-04-24 | 2013-09-24 | Qualcomm Incorporated | Reduced complexity beam-steered MIMO OFDM system |
US20090161613A1 (en) | 2007-11-30 | 2009-06-25 | Mark Kent | Method and system for constructing channel quality indicator tables for feedback in a communication system |
US20090291642A1 (en) | 2008-05-23 | 2009-11-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Systems and Methods for SIR Estimation for Power Control |
US8619620B2 (en) * | 2008-09-16 | 2013-12-31 | Qualcomm Incorporated | Methods and systems for transmission mode selection in a multi channel communication system |
ES2355347B1 (es) | 2009-01-30 | 2012-02-10 | Vodafone España, S.A.U. | Método para detectar interferencias en un sistema de comunicación inal�?mbrico. |
US20100260060A1 (en) | 2009-04-08 | 2010-10-14 | Qualcomm Incorporated | Integrated calibration protocol for wireless lans |
-
2003
- 2003-09-29 US US10/674,038 patent/US7002900B2/en not_active Expired - Lifetime
- 2003-10-27 KR KR1020057006732A patent/KR101073331B1/ko active IP Right Grant
- 2003-10-27 UA UAA200504964A patent/UA83473C2/uk unknown
- 2003-10-27 WO PCT/US2003/033905 patent/WO2004038987A2/en active Application Filing
- 2003-10-27 AU AU2003284943A patent/AU2003284943C1/en not_active Expired
- 2003-10-27 EP EP03779264.5A patent/EP1556983B1/en not_active Expired - Lifetime
- 2003-10-27 CA CA2501449A patent/CA2501449C/en not_active Expired - Lifetime
- 2003-10-27 BR BRPI0315520A patent/BRPI0315520B1/pt active IP Right Grant
- 2003-10-27 CN CN2003801045546A patent/CN1717889B/zh not_active Expired - Lifetime
- 2003-10-27 JP JP2005501685A patent/JP4739952B2/ja not_active Expired - Lifetime
- 2003-10-27 MX MXPA05004194A patent/MXPA05004194A/es active IP Right Grant
- 2003-10-27 TW TW092129817A patent/TWI339057B/zh not_active IP Right Cessation
-
2005
- 2005-03-21 IL IL167572A patent/IL167572A/en active IP Right Grant
- 2005-10-13 US US11/250,353 patent/US8934329B2/en active Active
-
2006
- 2006-04-03 HK HK06104068.3A patent/HK1086123A1/xx not_active IP Right Cessation
-
2009
- 2009-05-05 AU AU2009201783A patent/AU2009201783B2/en not_active Expired
- 2009-06-24 US US12/490,993 patent/US8873365B2/en active Active
-
2010
- 2010-10-01 JP JP2010223417A patent/JP5199324B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
UA83473C2 (uk) | 2008-07-25 |
IL167572A (en) | 2011-03-31 |
US8873365B2 (en) | 2014-10-28 |
WO2004038987A3 (en) | 2004-07-15 |
US20040081073A1 (en) | 2004-04-29 |
US8934329B2 (en) | 2015-01-13 |
US20100208841A1 (en) | 2010-08-19 |
CN1717889A (zh) | 2006-01-04 |
EP1556983B1 (en) | 2013-06-05 |
JP2006504366A (ja) | 2006-02-02 |
IL167572A0 (en) | 2009-02-11 |
AU2009201783A1 (en) | 2009-05-28 |
BRPI0315520B1 (pt) | 2017-03-07 |
BR0315520A (pt) | 2005-09-27 |
AU2003284943C1 (en) | 2009-07-23 |
CA2501449A1 (en) | 2004-05-06 |
TW200417214A (en) | 2004-09-01 |
US20060039275A1 (en) | 2006-02-23 |
AU2003284943B2 (en) | 2009-02-05 |
JP5199324B2 (ja) | 2013-05-15 |
EP1556983A2 (en) | 2005-07-27 |
HK1086123A1 (en) | 2006-09-08 |
WO2004038987A2 (en) | 2004-05-06 |
CN1717889B (zh) | 2011-05-25 |
KR101073331B1 (ko) | 2011-10-12 |
AU2003284943A1 (en) | 2004-05-13 |
JP4739952B2 (ja) | 2011-08-03 |
US7002900B2 (en) | 2006-02-21 |
CA2501449C (en) | 2012-11-27 |
MXPA05004194A (es) | 2005-06-08 |
JP2011030262A (ja) | 2011-02-10 |
KR20050072767A (ko) | 2005-07-12 |
AU2009201783B2 (en) | 2011-04-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI339057B (en) | Transmit diversity processing for a multi-antenna communication system | |
TWI330954B (en) | Diversity transmission modes for mimo ofdm communication systems | |
RU2321951C2 (ru) | Обработка пространственного разнесения для многоантенной коммуникационной системы | |
JP5199202B2 (ja) | Ofdmをベースにしたマルチアンテナ通信システムのための送信ダイバーシティおよび空間拡散 | |
RU2449486C2 (ru) | Структура пространственного пилот-сигнала для беспроводной связи с множеством антенн | |
RU2390935C2 (ru) | Каналы сигнализации с изменяющимися характеристиками для обратной линии связи в системе беспроводной связи | |
TWI360972B (en) | Efficient channel structure for a wireless communi | |
KR100867258B1 (ko) | 다중-캐리어 변조를 사용하는 다중-안테나 통신 시스템을위한 전송 방법 | |
US7693124B2 (en) | Slot-to-interlace and interlace-to-slot converters for an OFDM system | |
TW200828858A (en) | Method and apparatus for communicating network identifiers in a communication system | |
JP2010104012A (ja) | マルチ−キャリア通信システムにおける複数データストリームの周波数分割多重方式 | |
BRPI0511170B1 (pt) | Método e aparelho para fornecer diversidade de transmissão em um sistema de comunicação de multi-canais e memória legível por computador | |
TW200904088A (en) | Method and system of interleaving for a multiple-input multiple-output multi-band OFDM communication system | |
TW200950394A (en) | Wireless communication of turbo coded data with time diversity | |
TWI324002B (en) | Methods and apparatus for circulation transmissions for ofdm-based mimo systems | |
KR20060034079A (ko) | 이동통신 시스템에서 방송 서비스 제공 장치 및 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK4A | Expiration of patent term of an invention patent |