TWI379560B - Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system - Google Patents

Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system Download PDF

Info

Publication number
TWI379560B
TWI379560B TW095104280A TW95104280A TWI379560B TW I379560 B TWI379560 B TW I379560B TW 095104280 A TW095104280 A TW 095104280A TW 95104280 A TW95104280 A TW 95104280A TW I379560 B TWI379560 B TW I379560B
Authority
TW
Taiwan
Prior art keywords
channel
complex
data stream
intrinsic
sfbc
Prior art date
Application number
TW095104280A
Other languages
English (en)
Other versions
TW200704058A (en
Inventor
Kwak Jaeyoung
L Olesen Robert
Bultan Aykut
Zeira Eldad
Koo Chang-Soo
M Ozluturk Fatih
Huang Yuejin
R Pasad Kalpendu
Original Assignee
Interdigital Tech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of TW200704058A publication Critical patent/TW200704058A/zh
Application granted granted Critical
Publication of TWI379560B publication Critical patent/TWI379560B/zh

Links

Classifications

    • 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
    • H04L1/0606—Space-frequency coding
    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • 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
    • H04B7/0615—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 weighted versions of same signal
    • H04B7/0619—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 weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H04B7/0615—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 weighted versions of same signal
    • H04B7/0619—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 weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/0615—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 weighted versions of same signal
    • H04B7/0619—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 weighted versions of same signal using feedback from receiving side
    • H04B7/0658—Feedback reduction
    • H04B7/066—Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0046—Open loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Description

九、發明說明： 發明所屬之技術領域 本發明係有關無線通信系統。更 正交分頻多工(0FD_線通信系統中實施：=: 碼(SFBC)方法及裝置。 間頻率£塊編 先前技術 資料蝴料被峨_何料流，而各 貝枓抓係使祕有小於全部可得傳輸織 ==賴方案。正交分頻多工效率係視這些=正 :::=^。該次載波彼此並不干擾，而各運載一部份 正又刀頻夕工系統係具有優於其他無線通信系統之優 點。當使用者㈣被分flj為列次载波·载之資料流時， ^次^波上之有效資料速率係非常小。因此，符號持續期間 偏以長。紐蚌伽關可料歡延遲細。也就是… 5兒，其並不被多路嚴重影響。然而，典型無線系統需要複雜 頻道等化方案來對抗多路衰落。 正交分頻多工另一優點係為傳送器及接收器處之正交 次载波產生係可藉由使用反向快速富利葉轉換(IFFT)及快速 富利葉轉換(FFT)引擎來達成。因為反向快速富利葉轉換及 快速富利葉轉換實施係為人熟知，所以正交分頻多工可被輕 易實施而不需複雜接收器。 多輸入多輸出(ΜΙΜΟ)係涉及傳送器及接收器使用一個 實施方式 ^ 此後，站，’(STA)名詞係包含但不限於使用者設備， 無線傳輸/㈣單元，岐或行動用 戶單元，呼叫器，或 2作於減環境中之任何其他㈣元件。此後被稱為” 子。。點（AP)”者係包含但不限於B節點，基地台，位址控 制斋’或無線環境巾之任何其他接介裝置。 妒》本&月將參考附圖做說明’其中遍及全文之相同參考 =號係代表相同元件。狀意，被提供於本發明之圖示係為 冋位準功此區±4圖，而該功能區塊所實施之功能係多少可藉 由區塊來貫施。本發明特性可被併人積體電路(1C)，或被 配置於包含複數互連組件之電路中。 本發明實施例係提供可實施空間頻率區塊編碼多輸 ^多輪出編碼之-傳送！!及接收觀配紐器。實施例亦提 供傳送森頻道預編碼及接收器天線處理及頻道分解功能。 ^系統操作具有—兩模X— ••封閉—迴路及開放-迴-路。封閉迴路 係被使用於傳送器可獲得頻道狀態資訊時。開放迴路係被使 用於頻道㈣資訊不可得時。變異可被用於傳送至可提供分 集利益之固有站。 封閉迴路模式中’頻道狀態資訊係被用來藉由分解及對 角化頻道矩陣及傳送器處之預編碼來創造虚擬獨立頻道。被 、’·。疋TGn頻道之固有值展開，本發明係使用對頻道預編碼 器之輸入處之傳送器中之空間頻率多輸入多輸出編碼以降 低資料速率代j貝來增加強固性。多輸入多輸出中之任何編碼 方案均必狱理分集對多工增 頻道統計之置換方案。㈣頻取適合特定 ,, „ 羊巳鬼，·扁碼係因低行動性及長 ^致時間而被選擇。此方案允許 接收器為簡單之接收哭⑽4 A ^(MMSE) 吝Φ ^ 貫組合解可促成大範圍上之較高 出。本糾貫_可允許m皮功率恤 經由頻道狀態回授之封閉 、、 έ士 之封_路_作來維持持續強固鏈 /9在利錢其可輕易度量傳送器及接以處之任 何數量天線。 牧仗》。匙之任 頻道狀態資訊可藉由來自接收器之回授或經由開發頻 =ϋ=獲仔自傳送器處。頻道相互性係有用於主分頻 二基礎系，·先。此例+，傳送器及接收器可獨立估計及分解 為頻道。當信麵概很高而降伽授頻寬負鱗，頻道更 新速率可被降低。潛伏要求及暖_速率_有值之 頻率非選擇性通常並不明顯。 封閉迴路模式係需校準傳送器來補償上鏈及下鍵方向 乏被估計頻道振福及相位差不常被達成於如站連結斯 間或應用控制下，且可使關道相互性來估計㈣之頻道。 此外’每固有波束之頻道品質指標(CQI)(或信號雜訊比)係被 回授至傳送|§來支援適應性速率控制。 第一圖係為實施封閉迴路模式之正交分頻多工_多輸入 多輸出系統100區塊圖。系統100係包含一傳送器11〇及一 接收斋130。傳送器11〇係包含一頻道編碼器112，—多工 益114，一功率負載單元116，複數空間頻率區塊編碼單元 118，複數串聯並鏈(S/P)轉換器12〇，複數固有波束成形器 1379560 ^至固有波束成形H丨22。固有波束成形器m係將固有波 束分配至傳送天線。反向快速富利葉轉換單以24係將頻域 中之資料轉換為時域中之資料。 接收杰130係包含複數接收天線(無圖示），複數快速富 利葉轉換單元132，时波束成形器134 : 碼解辦元136，-組合器138，—頻道解碼器=一= 估計器140 ’ 一頻道狀態資訊產生器142及一頻道品質指標 產生器146。 $ 快速富利葉轉換單元132係轉換該被接收樣本為頻域， 而固有波束成形器134,空間頻率區塊編碼解碼單元136及 頻道解碼器144係執行被實施於傳送器11〇處之反向操作。 組合态138係使用最大比率組合(mrc)來組合空間頻率區塊 編碼解碼結果。 頻道估§十為140係使用被傳送自傳送器之訓練仔列來產 生頻道矩陣，並藉由單值分解(SVD)或固有值分解來分解該 蘋道矩ί為每炎東波(或'每次載波群組河波朿成形單二矩陣… U及V(u用於傳送，而V用於接收)及一對角矩陣D。頻道 狀態資訊產生器142係從頻道估計結果產生頻道狀態資訊， 而頻道品質指標產生器係以該解碼結果為基礎來產生頻道 品質指標。頻道狀態資訊及頻道品質指標係被傳回傳送器 110。 η T傳送天線及nR接收天線間之頻道矩陣η可被寫為如 下：
12 頻道矩陣Η係藉由單值分解分解如下： H^UDV^， 其中U及V係為單—矩陣，而D為對角矩陣。cnRxnR而
FeCnTxnT。接著，針對傳送符號向量s，傳送預編碼係被簡單 執行如下： (被傳送信號）。 被接收信號變成如下： y=HVs+n > 其中η為被引進頻道中之雜訊。接收器係使用匹配濾波 器來完成該分解： ^^VDHuh =DHUH。 一般化固有波束之頻道增益之後，傳送符號5之估計變 —威 ' ------------______ — s = aDHUHHVs +η =s + η S係不必執行連續干擾消除或最小均方誤差型針測器即 可被偵測。 °° p D係為藉由跨越對角之Η固有值來形成之對角矩 陣。因此，一般化因子(1=0-2。（1為111111之固有向量，1 ΗΗη之固有向量，而之單一值對角矩陣 值平方根）。 1379560 苐二圖係為依據本發明實施開放迴路模式之系統200區 塊圖。系統20CM系包含一傳送器21〇及—接收器23〇。開放 迴路模式中，傳送器2U)中之空間頻率編碼及空間展開組合 料需頻道狀態資訊即可提供分集。當操作固* 8〇2旧邑 站時’此方案變異係可被使用。 傳送器210係包含一頻道編碼器212，一多工器214， /功率負載單元216，複數空間頻率區塊編碼單元218，複 數串聯並鏈轉換器220，波束成形器網路(BFN)222，複數反 向快迷富利葉轉換單元224，及複數傳送天線226。如同封 閉迴路模式中，頻道編碼器212係使用頻道品質指標來決定 每次载波或次載波群組之編碼速率及調變。被編碼資料流係 被多工器24多工為兩個或更多資料流。 開放迴路中’固有波束成形器係被波束成形器網路222 取代。波束成形器網路222係形成空間中之N波束，其中N 為天線226之數量。該波束係藉由波束成形器網路矩陣操作 丨春一—被偽隨-機—建構。被用於空間-頻哮區〜塊—綸碌之—獨.立次載波群組 係被傳送於個別波束上。 針對固有支援’空間頻率區塊編碼可能不被執行。經由 波束排列之替代分集係被執行，其可改善固有8〇2113么設 備之效能。 接收器230係包含接收天線231，快速富利葉轉換單元 232 ’波束成形态網路234，空間頻率區塊編碼解碼及組合單 元236及一頻道解碼器238。快速富利葉轉換單元232係轉 換時域中之被接收信號為頻域中之信號。空間頻率區塊編碼 14 丄379560 t碼及組合單元236轉碼及組合被減自:域波群組/固 波束之概，並使用先前星羅尺寸知識將其從並聯轉換至 聯。符號係使用最大比率組合來組合。頻道解碼器攻係 解碼該被組合符號並產生頻道品質指標。 ’、 功率負載第-實施例係被解釋如後4間處理係為空間 頻率區塊編碼及财波束成形之組合。此係被執行來於予* 間頻率區塊編碼承受之冗餘增益及时波束成卿触供工 之空間多工間之最佳妥協。神負载方案係跨翻道矩陣固 f模絲操作。㈣，㈣頻率區塊編碼亦引進無論因編碼 恭内部父叉操作所引起之輸人功率負載為何，編碼器輸出均 具有相同功率負载之限制。 y第二圖係為描繪功率負載之傳送器110區塊圖。第三圖 係描緣4x4例作為案例’而功率負載第一實施例將參考切 例來轉。然而，應注意’該4χ4例係可被擴展為任何其他 例。 ’、 1騎粒載波個實料流徐被讀 載/適應性調變及編離MC)模式。也就是說，各對輸入之調 文順序係被郝為相同^此稍後係被映射至固有模式配對。 力ί負載單疋116之輸出係被施加至雙2x2空間頻率區塊編 碼單元。⑽，且接著被傳送至財波束成形H 122 1有波 束成形器122係經由賴理將輸人_麵道之财模式。 π針對所有K次载波，頻道矩陣之固有值係已知位於傳送 益。各固有模式之頻道能量係被定義如下：
15 1379560 ΣΚ,Ι2 其中I係為第k次載波之頻道第 弟1固有值。兩信號雜訊加 干擾係針 =_合_模錢定義如下： i=tM /2+1
Anodl - Σΐα，| 及Aiu«I2 = ^|〇；.|2 模，量。也就是說，固有模式係被分組 使具有取大紐能量(或信號雜訊加干擾比)之固有模式一半 Γ:組!:而具有最弱頻道能量之另-半係位於另-組 === 訊加干擾比係代表較強及較弱固有模 能量係為固有模式有多強之指標，因 =Γ些固有模式上之信號將為。此資訊係被用來施 性調變及編石馬及/不同功率負载給隨後被更詳細 解釋之各半。_合信雜訊力叶擾比之分離係被定義如 _Anod] ^ βτη〇ά 2 - ——__ “ -~ - ---一 一___ 封閉迴路操作期間，傳送器η〇係具有其可娜固有值 自，目前頻道狀g f訊之知識。傳送器則亦 =…員犬悲'貧訊推論可被支援於鏈結，Rb中之資料速 ^接著’給^，可接受之頻道狀態資訊之功率負载係為可 ^父分頻多工符號被傳送之位元數即將被各模式使用之 5周變類型間之最佳化。 上述，使用被計算用於固有模式1之頻道能量，可被 ^員道狀況之最大位元速率係被決定。因此，使用上述模 16 式獨立計算，係可決定位元辭如何必須被分配於兩對模式 之間。第四®係為功率貞侧及兩賴式間之適應性調變及 編碼映棚示。此例中’特定次載波可被支援之位元速率係 為母正父77頻夕：£*付號24位元。滿足該位元速率之最低調 變順序係被找出於第四圖中虛線箭頭標示者。此例中，第一 及第一杈式(第—配對她合模式)將使用16正交振幅調變 (QAM)’而第四模式(第二配對被轉合模式)將使用256正交 振幅調變。 注意，此映射係被說_於可接受—頻道品質指標及用 於一次載波。替代多輸入多輸出配置例中，如2x4，2x2等， 除了表入口巾之位元總數被向下纟 會製代表傳送能力且功率 =載可被達成於-單對模式之外，相同功率負載方案係可接 依據第二實施例之功率負載方案係被解釋如下。每 =固有值(⑽>_>·..> λη侧係被排序，而固有 2值:創造：她姻所_波請該_ Ε = {λι(1)，λ2(2)...，Ai(k)}，i=i，2，...，nT， 2、’ κ，載波數，nT為傳送天線數’而λ _】次載波 之頻道之苐1固有值。NT為偶數。 母固有波束之固有值平均係被計算如下：
. I K ，ί=1，2，···，ηΤ。 固有波束係被配對來創造Almouti空間頻率編碼，如 17 1379560 (E，e2}i，{E3，E4}2， 5 {L· ' ,,--. VC t /nT/2 ° W而，若一對信號雜訊比大於SNR^x，則該對第二固有波 形係被具有次低固有值平均之固有波束取代，直到其信號雜 訊比小於或等於SNRmin為止。 '。儿 爾(〇 = (4《丨)/<7"2， ，化為雜訊變異，SNRmin為服務品質所需最高資料速率之 最小所需信_減。此步驟储重複朗所有财波束均 被配對為止。第五圖顯示功率/位元負載之次載波群組配對 例。 各對固有波束之資料速率係藉由針對給定品質映射一 2號雜概至該資料速率來決定。所需信號雜訊比可被調 所翻有波束配對以補制量縣並使總傳送功率 母之每對固有波束之加權向量可被計算如下·· w")=, --V- -2^..(/)---------- ' 一---— _ ·一---' - 其中，1為第i對固有波束，而j為第』.次載波。 除了第-或第二實施例之外，依據第三
率負载係針對弱时模式被施加相:續 J 組。也就是說，除了被施加至所有固有模‘二》㈣ 外，其亦可僅被施加至較弱者，因此可從 :載之 多。該例中，這些不被功率負載之 可最 2編碼或可具有不同適應性調變及二::具，： 功率負载之侧顿物被 1379560 定。同時，頻道之固有模式永遠被從最強至最弱排序功率。 藉由配對類似功率之固有模式，吾人可改善頻道之功率負 載。 . 、 空間處理方案係可配置至任何接收及傳送天線組合。視 各侧之天線數，空間頻率區塊編碼及固有波束成形選擇組合 係被使用。下表係摘錄所支援之各種配置即可應用至各情況 之空間處理及4率負載。 / 天線配置(TxXRx) 空間頻率區塊編碼 固有波束成形 MXN(M，N爹 1) M/2區塊編碼 傳送益處VI波束 接收器處N浊壶 1 XN(N^1) 不使用 藉由接收器來法含 MX 1 (M^l) M/2區塊編碼 傳送器處Μ浊争 表1
雖然本發明之特性及元件被以特定組合說明於較佳 實施例中，但各特性及元件可被單獨使用而不需較佳每
-----------— 只 施例之其他—特性及元件’或着或無本發明其他特性及_ 件之各種組合中。再者，本發明可被實施於任何類型無 線通信系統中。 19 1379560 圖式簡單說明 第1圖係為實施封閉迴路模式之正交分頻多工-多輸入 多輸出系統區塊圖。 第2圖係為實施開放迴路之系統區塊圖。 第3圖係為描繪功率負載之傳送器區塊圖。 第4圖係為功率負載例及兩對模式間之適應性調變及編 碼映射圖示。 第5圖顯示功率/位元負載之次載波群組配對例。 元件符號說明 100 實施封閉迴路模式之正交分頻多工-多輸入多輸出 系統 110、210 傳送器 130、230 接收器 200 實施開放迴路模式之正交分頻多工-多輸入多輸出 % π ---------- 20 、奶

Claims (1)

1379560 101年4月26日修正頁 、申請專利範圍： 1. -種使用如醉_編碼(SFBC)傳輸㈣的方法，該方 法包括： 流 對-輸入資料流執行一頻道編妈，以產生一編碼資料 多工該編碼資料流為複數個多工資料流； 獲得一頻道狀態資訊(CSI); 基於該CSI對每個多工資料流執行功率負載； 配對正交77頻夕I(QFDM):域波以用於㈣C編碼丨 在該複數個多工資料流上執行SFBC編碼； 基於該CSI在經SFBC編碼的該資料流上執行固有波 束成形，以分配複數個固有波束至複數個傳輸天線；以及 執行反向快速富利葉轉換(IFFT)以將經 的資料流轉換至傳輸時域。 米珉办 ϋΐ請專利範㈣1項之方法，其中該次載波被分為 子夂數個次载波-組。——__________ 3’ =請專利範圍第2項之方法，其中每個次載波組的 '、小於一頻道的相干性頻寬。 ’如申清專利範圍帛1項之方法，更包括： 計算所有次載波用於每個固有模式的一頻道能量； 、基於°亥頻道能1計异用於複數個固有模式的複數個語 波信號雜訊比(SNR); 5十算讓複數諧波sm之分離； 21 1379560 ΙΟΙ年4月26曰修正頁 決定可受該CSI支持的一資料率：以及 決定分配於該複數固有模式之間的位元速率。 5.如申請專利範圍第1項之方法，更包括： ，序每次載波之複數個固有值(eigenvalues); 藉由針對所有次載波分組相同排序的複數個固有 值而產生該複數固有波束； 計算每個固有波束的該複數固有值的平均. Φ 藉由配㈣複數时以而產生複數個空 區塊；以及 純t由將—固有波束對所f的信號雜訊比映射至-k率，決定每個固有波束對的該資料速 6.如申,請專利範圍第5項之方法，更包括： 调整所有固有波束對所需的SNR 差並使-總傳輸功㈣固定。 制—置误 7:如申請專，範圍第5項之方法，更包括： 她加每個-固有破東對的一加—權向量一「〜 〜 8_ ^請專利範圍第β之方法，其中該⑶二' 盗產生且從孩接收器送回。 接 備:ί用空間頻率區塊編碼(SFBC)傳輪資料的設備， ^申請範圍第i項之方法，，^ j互性而由_傳送器所魅 -μ ^由頻道 頻道編石馬器， 設置以對一輸入資料流執行 頰道碥 22 101年4月26日修正頁 碼，以產生一編碼資料流； 一多工器，設置以將經編碼的該資料流多工為複數個 多工貧料流， 一功率負載單元，設置以基於一頻道狀態資訊(CSI)， 對經多工之各該資料流執行功率負載； 複數個SFBC編碼單元，設置用以在每對正交分頻多 工(OFDM)次載波的功率負載之後，對該複數多工資料流 執行SFBC編碼； 複數固有波束成形器，設置用以基於該CSI在經SFBC 編碼的該資料流上執行固有波束成形，以分配複數個固有 波束至複數個傳送天線； — 複數個反向快速富利葉轉換(IFFT)單元，設置用以將 該複數固有波束成形器固有波束成形的該資料流轉換至 傳輸時域；以及 複數個天線。 11「如申請專利範-圍-苐-_1 Q-項_之設備--其-中-該攻「載波被-分為 複數個次載波組。 12. 如申請專利範圍第11項之設備，其中每個次載波組的 頻寬小於一頻道的相干性頻寬。 13. 如申請專利範圍第10項之設備，其中該功率負載單元 更包括： 一頻道能量計算單元，用以計算所有次載波用於每 個固有模式的一頻道能量； 1379560 道 一譜波信_訊比(SNR)計算單元，用 能董計异用於複數個固有模式的複數個错波咖二頻 該複數諧波SNR之分離；以及 迎叶算 一速率計算單元’用以決定可受該CSI支持的一 率，並決定分配_複數时模式 貪料 14. :申請專利範圍第1。項之設備，其中該二是夢 (由針對f個次餘分組㈣排序的複數Hi ^g_lues)而產生’而每對固有波束的—資料速率是 错由將一固有波東斜所帝、 、 速率而決定。 姻1訊比映射至該資料 15. == 圍第14項之設備，其中所有固有波束對 傳送功率為固定^被調整’以補^測量誤差並使一總 :4項之設備’其“權向量被施 17 收益產生且從該接收器送回。 18. ^申請專利範圍第10項之設備，其中該⑶ 道相互性而由一傳送器所產生。 疋、 19. ;=用空間頻率區塊編碼(SFBC)傳輸㈣的設備，該設 -頻道編碼器，設置以對—輸人資料流執行一頻道編 碼，以產生一編碼資料流； 24 1379560 • 1〇1年4月26日修正頁 -多工器’設置⑽經編碼賴資料流^為複數個 多工資料流； -功率負載單元’設置以基於-頻道狀態資訊(⑶）， 對經多工之各該資料流執行功率負載； 複數個SFBC編碼單元，設置用以在每對正交分頻多 工(OFDM)次載波的功率負載之後，對該複數多工資料流 執行SFBC編碼； 一波束成形網路’設置用以產生複數個波束並排列所 產生的該複數波束； 複數個反向快速富利葉轉換(IFFT)單元，設置用以執 行IFFT，將該波束成形網路波束成形的該資料流轉換至傳 輸時域；以及 複數個天線。 25
TW095104280A 2004-08-12 2005-08-11 Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system TWI379560B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60133804P 2004-08-12 2004-08-12

Publications (2)

Publication Number Publication Date
TW200704058A TW200704058A (en) 2007-01-16
TWI379560B true TWI379560B (en) 2012-12-11

Family

ID=35908129

Family Applications (5)

Application Number Title Priority Date Filing Date
TW102102720A TWI543572B (zh) 2004-08-12 2005-08-11 正交分頻多工無線通信系統中實施空間頻率區塊編碼方法及裝置
TW094213763U TWM287552U (en) 2004-08-12 2005-08-11 Wireless transmit/receive unit or base station for implementing space frequency block coding for orthogonal frequency multiplexing
TW095104280A TWI379560B (en) 2004-08-12 2005-08-11 Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system
TW101121628A TWI517638B (zh) 2004-08-12 2005-08-11 正交分頻多工無線通信系統中實施空間頻率區塊編碼方法及裝置
TW094127401A TWI455535B (zh) 2004-08-12 2005-08-11 正交分頻多工無線通信系統中實施空間頻率區塊編碼方法及裝置

Family Applications Before (2)

Application Number Title Priority Date Filing Date
TW102102720A TWI543572B (zh) 2004-08-12 2005-08-11 正交分頻多工無線通信系統中實施空間頻率區塊編碼方法及裝置
TW094213763U TWM287552U (en) 2004-08-12 2005-08-11 Wireless transmit/receive unit or base station for implementing space frequency block coding for orthogonal frequency multiplexing

Family Applications After (2)

Application Number Title Priority Date Filing Date
TW101121628A TWI517638B (zh) 2004-08-12 2005-08-11 正交分頻多工無線通信系統中實施空間頻率區塊編碼方法及裝置
TW094127401A TWI455535B (zh) 2004-08-12 2005-08-11 正交分頻多工無線通信系統中實施空間頻率區塊編碼方法及裝置

Country Status (20)

Country Link
US (7) US7505529B2 (zh)
EP (2) EP1779623B1 (zh)
JP (6) JP2008510386A (zh)
KR (4) KR101282592B1 (zh)
CN (4) CN101002447A (zh)
AR (3) AR050455A1 (zh)
AT (2) ATE456232T1 (zh)
AU (2) AU2005272789B2 (zh)
BR (1) BRPI0515010A (zh)
CA (2) CA2771267C (zh)
DE (2) DE602005019062D1 (zh)
DK (1) DK1779623T3 (zh)
ES (1) ES2339788T3 (zh)
HK (1) HK1175040A1 (zh)
IL (1) IL181113A0 (zh)
MX (1) MX2007001764A (zh)
MY (2) MY154510A (zh)
NO (1) NO339219B1 (zh)
TW (5) TWI543572B (zh)
WO (1) WO2006020741A2 (zh)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7864659B2 (en) * 2004-08-02 2011-01-04 Interdigital Technology Corporation Quality control scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems
JP4744965B2 (ja) * 2004-08-09 2011-08-10 パナソニック株式会社 無線通信装置
GB2419786C (en) * 2004-10-27 2009-10-07 Toshiba Res Europ Ltd Multiple list link adaption
KR100909539B1 (ko) * 2004-11-09 2009-07-27 삼성전자주식회사 다중 안테나를 사용하는 광대역 무선 접속 시스템에서 다양한 다중안테나 기술을 지원하기 위한 장치 및 방법
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
CN1780278A (zh) * 2004-11-19 2006-05-31 松下电器产业株式会社 子载波通信系统中自适应调制与编码方法和设备
US7649861B2 (en) * 2004-11-30 2010-01-19 Intel Corporation Multiple antenna multicarrier communication system and method with reduced mobile-station processing
US7822128B2 (en) * 2004-12-03 2010-10-26 Intel Corporation Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization
KR100782925B1 (ko) * 2004-12-15 2007-12-07 삼성전자주식회사 다중 안테나 통신 시스템
JP4746420B2 (ja) * 2004-12-27 2011-08-10 株式会社東芝 無線通信装置及び方法
US7602855B2 (en) * 2005-04-01 2009-10-13 Interdigital Technology Corporation Method and apparatus for singular value decomposition of a channel matrix
BRPI0617868A2 (pt) * 2005-10-27 2011-08-09 Qualcomm Inc pré-codificação para programação sensìvel a segmento em sistemas de comunicação sem fio
US8594207B2 (en) 2005-10-31 2013-11-26 Motorola Mobility Llc Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system
KR100705448B1 (ko) * 2005-12-09 2007-04-09 한국전자통신연구원 다중 안테나로 구성된 ｏｆｄｍ에서 채널 정보 및 코드북을이용한 송신 전력 할당 방법 및 장치
US7715803B2 (en) * 2005-12-20 2010-05-11 Samsung Electronics Co., Ltd. Methods and apparatus for constant-power loading asymmetric antenna configuration
US7609774B2 (en) * 2005-12-20 2009-10-27 Samsung Electronics Co., Ltd. Beamforming transceiver architecture with enhanced channel estimation and frequency offset estimation capabilities in high throughput WLAN systems
US7697621B2 (en) * 2005-12-22 2010-04-13 Samsung Electronics Co., Ltd. Method and system for power loading implementation detection in beamforming systems
US20070153934A1 (en) * 2005-12-29 2007-07-05 Samsung Electronics Co., Ltd. Constant uneven power loading in beamforming systems for high throughput wireless communications
EP1821444B1 (en) * 2006-02-21 2018-09-19 Samsung Electronics Co., Ltd. Apparatus and method for transmission and reception in a multi-user MIMO communication system
JP4753750B2 (ja) * 2006-03-06 2011-08-24 株式会社日立製作所 無線通信方式および無線基地局装置
KR100925733B1 (ko) 2006-04-21 2009-11-11 엘지전자 주식회사 무선통신 시스템의 정보 전달방법 및 이를 지원하는무선통신 단말기
JP2009539314A (ja) * 2006-05-30 2009-11-12 インターデイジタル テクノロジー コーポレーション Ｍｉｍｏシステム内の受信機の性能向上のために信号をスケーリングする方法および機器
KR101274871B1 (ko) * 2006-06-14 2013-06-17 삼성전자주식회사 폐 루프 방식의 다중 안테나 시스템에서의 데이터송/수신장치 및 방법
US8107552B2 (en) 2006-06-28 2012-01-31 Samsung Electronics Co., Ltd. System and method of wireless communication of uncompressed video having a fast fourier transform-based channel interleaver
US8189627B2 (en) 2006-06-28 2012-05-29 Samsung & Electronics Co., Ltd. System and method for digital communications using multiple parallel encoders
US8588116B2 (en) * 2006-08-21 2013-11-19 Koninklijke Philips N.V. Efficient CQI signaling in multi-beam MIMO systems
US7944985B2 (en) * 2006-08-24 2011-05-17 Interdigital Technology Corporation MIMO transmitter and receiver for supporting downlink communication of single channel codewords
JP5474549B2 (ja) * 2006-08-28 2014-04-16 コーニンクレッカ フィリップス エヌ ヴェ 可変数のビームを有するｍｉｍｏシステムにおける効率的なｃｑｉシグナリング
US8374650B2 (en) * 2006-09-27 2013-02-12 Apple, Inc. Methods for optimal collaborative MIMO-SDMA
US8626104B2 (en) 2006-09-28 2014-01-07 Apple Inc. Generalized codebook design method for limited feedback systems
EP2067332A4 (en) * 2006-09-29 2014-03-26 Samsung Electronics Co Ltd METHOD AND APPARATUS FOR TRACK ESTIMATION IN OFDM WIRELESS COMMUNICATION SYSTEM
KR100800668B1 (ko) * 2006-09-29 2008-02-01 삼성전자주식회사 직교주파수 분할다중 무선통신 시스템에서의 채널 추정방법 및 장치
US7702029B2 (en) 2006-10-02 2010-04-20 Freescale Semiconductor, Inc. MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
US8194750B2 (en) 2006-10-16 2012-06-05 Samsung Electronics Co., Ltd. System and method for digital communication having a circulant bit interleaver for equal error protection (EEP) and unequal error protection (UEP)
US20080101494A1 (en) * 2006-10-31 2008-05-01 Freescale Semiconductor, Inc. System and method for generating MIMO signals
TW200822603A (en) * 2006-10-31 2008-05-16 Interdigital Tech Corp Transmit diversity of broadcast channel in OFDMA based evolved UTRA
KR101406318B1 (ko) * 2006-12-05 2014-06-13 한국전자통신연구원 신호 및 안테나 정보 전송 방법, 그리고 안테나 개수 추정방법
US8073069B2 (en) 2007-01-05 2011-12-06 Apple Inc. Multi-user MIMO-SDMA for finite rate feedback systems
US8111670B2 (en) 2007-03-12 2012-02-07 Samsung Electronics Co., Ltd. System and method for processing wireless high definition video data using remainder bytes
US8020075B2 (en) 2007-03-16 2011-09-13 Apple Inc. Channel quality index feedback reduction for broadband systems
US7809074B2 (en) * 2007-03-16 2010-10-05 Freescale Semiconductor, Inc. Generalized reference signaling scheme for multi-user, multiple input, multiple output (MU-MIMO) using arbitrarily precoded reference signals
US7961807B2 (en) * 2007-03-16 2011-06-14 Freescale Semiconductor, Inc. Reference signaling scheme using compressed feedforward codebooks for multi-user, multiple input, multiple output (MU-MIMO) systems
US8831116B2 (en) 2007-03-20 2014-09-09 Motorola Mobility Llc Method and apparatus for providing channel quality and precoding metric feedback in an orthogonal frequency division multiplexing communication system
US8130864B1 (en) 2007-04-03 2012-03-06 Marvell International Ltd. System and method of beamforming with reduced feedback
KR20080090707A (ko) * 2007-04-05 2008-10-09 엘지전자 주식회사 신호 송수신 방법 및 신호 송수신 장치
US7843990B2 (en) * 2007-04-09 2010-11-30 Alcatel-Lucent Usa Inc. Determining a channel matrix by measuring interference
US8547986B2 (en) * 2007-04-30 2013-10-01 Apple Inc. System and method for resource block-specific control signaling
KR101365565B1 (ko) * 2007-08-08 2014-02-21 포항공과대학교 산학협력단 공간 주파수 블록 부호화 신호 처리 시스템
KR101455981B1 (ko) * 2007-08-14 2014-11-03 엘지전자 주식회사 하향링크 상황에 따른 적응적 채널 품질 지시자 생성 방법및 이를 위한 사용자 기기
KR100913106B1 (ko) 2007-08-14 2009-08-21 엘지전자 주식회사 Ｐｈｉｃｈ 전송 자원 영역 정보 획득 방법 및 이를 이용한ｐｄｃｃｈ 수신 방법
US8098755B2 (en) * 2007-09-07 2012-01-17 Broadcom Corporation Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook
KR101358991B1 (ko) * 2007-09-14 2014-02-06 삼성전자주식회사 다중 빔형성 방법 및 장치
US7916081B2 (en) * 2007-12-19 2011-03-29 Qualcomm Incorporated Beamforming in MIMO systems
US8081110B2 (en) * 2007-11-06 2011-12-20 Qualcomm Incorporated Association in contention access period
US8054223B2 (en) * 2007-11-06 2011-11-08 Qualcomm Incorporated Quasi-omni training in channel time allocation period
US8219891B2 (en) * 2007-11-06 2012-07-10 Qualcomm Incorporated Method and apparatus for creating beamforming profiles in a wireless communication network
GB2458324B (en) * 2008-03-14 2010-12-08 Toshiba Res Europ Ltd Wireless communications apparatus
US7978623B1 (en) * 2008-03-22 2011-07-12 Freescale Semiconductor, Inc. Channel rank updates in multiple-input multiple-output communication systems
JPWO2009125591A1 (ja) * 2008-04-09 2011-07-28 パナソニック株式会社 無線受信装置、無線送信装置及びフィードバック方法
US8320492B2 (en) * 2008-07-07 2012-11-27 Wi-Lan Inc. Closed form singular value decomposition
EP2169888A1 (en) * 2008-09-30 2010-03-31 NTT DoCoMo Inc. A three dimensional pilot aided radio channel estimator
CN101944978B (zh) * 2009-07-03 2013-01-16 中兴通讯股份有限公司 基于lte系统下行发射分集模式的数据解调方法和解调装置
US8861629B2 (en) * 2009-07-31 2014-10-14 Cisco Technology, Inc. Power allocation of spatial streams in MIMO wireless communication system
US8295335B2 (en) 2009-12-31 2012-10-23 Intel Corporation Techniques to control uplink power
KR101567018B1 (ko) * 2010-02-09 2015-11-06 삼성전자주식회사 네트워크 백홀 환경 및 기지국 협력 수준 기반 ｍｉｍｏ／ｄｓｍ 동작 모드 결정 시스템
EP2553823B1 (en) 2010-04-01 2014-06-04 Telefonaktiebolaget LM Ericsson (publ) Precoder codebooks for effective channels with structured frequency-selectivity
US8422543B2 (en) * 2010-05-28 2013-04-16 Echostar Technologies L.L.C. Apparatus, systems and methods of signal compensation for different signals communicated over a coaxial cable system
KR101462427B1 (ko) * 2010-11-10 2014-11-17 서울대학교산학협력단 오디오 신호의 보존에 기초한 음파 통신에서 정보 송수신 시스템 및 방법, 그리고 이에 적용되는 장치
CN105634575B (zh) * 2010-12-10 2018-10-12 太阳专利托管公司 发送方法、发送装置、接收方法及接收装置
WO2012102479A2 (ko) * 2011-01-24 2012-08-02 엘지전자 주식회사 무선 통신 시스템에서 채널 상태 정보를 보고하는 방법 및 이를 위한 장치
JP5777092B2 (ja) * 2011-06-10 2015-09-09 ソフトバンク株式会社 無線通信装置、無線伝送システム及び無線伝送方法
US8553800B1 (en) * 2012-05-09 2013-10-08 Metanoia Communications Inc. LTE-advanced transmit diversity decoders
US9461855B2 (en) 2012-07-05 2016-10-04 Intel Corporation Methods and arrangements for selecting channel updates in wireless networks
US9215622B1 (en) * 2012-07-30 2015-12-15 GoNet Systems Ltd. Method and systems for associating wireless transmission with directions-of-arrival thereof
WO2014057840A1 (ja) * 2012-10-10 2014-04-17 シャープ株式会社 端末装置、基地局装置、無線通信システム、受信方法および集積回路
US8831127B2 (en) 2012-12-14 2014-09-09 Telefonaktiebolaget L M Ericsson (Publ) Antenna reconfiguration for MIMO communications when multiplicative noise limited
US8842764B2 (en) * 2012-12-14 2014-09-23 Telefonaktiebolaget L M Ericsson (Publ) Precoder weight selection for MIMO communications when multiplicative noise limited
US8891657B2 (en) 2012-12-14 2014-11-18 Telefonaktiebolaget L M Ericsson(Publ) Transmission power distribution for MIMO communications when multiplicative noise limited
GB2514174B (en) * 2013-05-17 2015-12-02 Cambium Networks Ltd Improvements to adaptive modulation
KR101486148B1 (ko) * 2013-07-10 2015-01-26 포항공과대학교 산학협력단 무선 통신 시스템의 부반송파간 간섭 제거 방법 및 이를 수행하는 장치
EP3044885A1 (en) * 2013-09-13 2016-07-20 Hewlett Packard Enterprise Development LP Subcarrier power reallocation
EP3114568A4 (en) 2014-03-07 2017-10-18 Trustees of Boston University System and method for embedding phase and amplitude into a real-valued unipolar signal
JP2015201804A (ja) * 2014-04-10 2015-11-12 富士通株式会社 受信装置、受信方法、送信装置、送信方法、及び、無線通信システム
US9860099B1 (en) * 2015-02-18 2018-01-02 Newracom, Inc. Support of frequency diversity mode for block code based transmission in OFDMA
JP6679830B2 (ja) * 2015-03-11 2020-04-15 日本電気株式会社 受信装置、及び受信方法
US10103799B2 (en) * 2015-03-16 2018-10-16 Lockheed Martin Corporation Apparatus and method for increased data rates in underwater communications using orbital angular momentum
US10411771B2 (en) 2015-03-30 2019-09-10 Kabushiki Kaisha Toshiba Wireless communication methods and apparatus
US9509381B1 (en) * 2015-09-18 2016-11-29 Samsung Electronics Co., Ltd Apparatus and method of blind detection of interference rank information in wireless communication system
US9876552B2 (en) 2016-02-01 2018-01-23 Qualcomm Incorporated Beamforming techniques for single-stream communications
US10778315B2 (en) * 2016-02-05 2020-09-15 Sony Corporation Terminal device, infrastructure equipment, methods and integrated circuitry
TWI634768B (zh) * 2016-10-05 2018-09-01 國立中山大學 空頻區塊編碼正交分頻多工系統
CN112788767B (zh) * 2016-12-19 2023-06-02 华为技术有限公司 动态调整波束集合的传输方法、基站及终端
CN109565754B (zh) * 2016-12-29 2021-02-23 华为技术有限公司 一种编码方法及装置
JP7063907B2 (ja) 2017-01-06 2022-05-09 スカイワークス ソリューションズ，インコーポレイテッド 高調波のビームフォーミング
US9942020B1 (en) * 2017-04-26 2018-04-10 Cisco Technology, Inc. Minimum delay spatio-temporal filtering for interference rejection
WO2019066676A1 (en) 2017-09-28 2019-04-04 Huawei Technologies Co., Ltd DEVICE AND METHOD FOR COMPRESSION AND / OR DECOMPRESSION OF CHANNEL STATE INFORMATION

Family Cites Families (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666378A (en) * 1994-03-18 1997-09-09 Glenayre Electronics, Inc. High performance modem using pilot symbols for equalization and frame synchronization
EP0931388B1 (en) * 1996-08-29 2003-11-05 Cisco Technology, Inc. Spatio-temporal processing for communication
DE19909243C1 (de) 1999-02-22 2000-11-23 Siemens Ag Verfahren zum Übertragen eines Steuersignals zu einem Fahrzeug und eine Empfangseinrichtung zum Empfangen des Steuersignals
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
US7004936B2 (en) 2000-08-09 2006-02-28 Cryocor, Inc. Refrigeration source for a cryoablation catheter
US6067290A (en) * 1999-07-30 2000-05-23 Gigabit Wireless, Inc. Spatial multiplexing in a cellular network
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
US6519279B1 (en) * 2000-01-05 2003-02-11 Motorola, Inc. Transceiver circuitry, portable communication device and method for performing radio communication
US7149253B2 (en) 2000-03-21 2006-12-12 Texas Instruments Incorporated Wireless communication
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
US6493331B1 (en) * 2000-03-30 2002-12-10 Qualcomm Incorporated Method and apparatus for controlling transmissions of a communications systems
US7139324B1 (en) * 2000-06-02 2006-11-21 Nokia Networks Oy Closed loop feedback system for improved down link performance
US6452546B1 (en) 2000-06-14 2002-09-17 Hrl Laboratories, Llc Wavelength division multiplexing methods and apparatus for constructing photonic beamforming networks
BR0112403A (pt) 2000-07-12 2006-05-09 Qualcomm Inc multiplexação de serviços em tempo real e serviços em tempo não real para sistemas ofdm
WO2002007371A2 (en) 2000-07-14 2002-01-24 At & T Wireless Services, Inc. Multicarrier transmission using polarized antennae
US6985434B2 (en) * 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
EP2259479B1 (en) * 2000-11-20 2019-04-17 Sony Deutschland GmbH Adaptive subcarrier loading
WO2002049306A2 (en) * 2000-12-15 2002-06-20 Broadstorm Telecommunications, Inc. Multi-carrier communications with group-based subcarrier allocation
EP1241824A1 (en) * 2001-03-14 2002-09-18 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Multiplexing method in a multicarrier transmit diversity system
US6771706B2 (en) 2001-03-23 2004-08-03 Qualcomm Incorporated Method and apparatus for utilizing channel state information in a wireless communication system
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
EP1255369A1 (en) * 2001-05-04 2002-11-06 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Link adaptation for wireless MIMO transmission schemes
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
WO2002098051A1 (en) * 2001-05-25 2002-12-05 Regents Of The University Of Minnesota Space-time coded transmissions within a wireless communication network
FR2825448B1 (fr) 2001-05-30 2003-09-12 Inst Francais Du Petrole Generateur thermique permettant de limiter les emissions d'oxydes d'azote par recombustion des fumees et procede pour la mise en oeuvre d'un tel generateur
JP2003018127A (ja) * 2001-07-03 2003-01-17 Fujitsu Ltd 送信装置および受信装置
KR100747524B1 (ko) 2001-07-07 2007-08-08 엘지전자 주식회사 다변 데이터 레이트 모드에서의 신호 전력 제어 방법
EP1282245A1 (en) 2001-07-30 2003-02-05 Telefonaktiebolaget L M Ericsson (Publ) Channel estimation in a multi carrier transmit diversity system
EP1283614A1 (en) 2001-08-10 2003-02-12 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Channel estimation in a multicarrier transmit diversity system
EP1284545B1 (en) * 2001-08-13 2008-07-02 Motorola, Inc. Transmit diversity wireless communication
US20030043071A1 (en) 2001-08-27 2003-03-06 E-Tenna Corporation Electro-mechanical scanned array system and method
CA2407242C (en) 2001-10-10 2011-05-31 David I. Havelock Aggregate beamformer for use in a directional receiving array
JP3607238B2 (ja) 2001-10-22 2005-01-05 株式会社東芝 Ｏｆｄｍ信号受信システム
JP3875086B2 (ja) 2001-11-30 2007-01-31 ソフトバンクテレコム株式会社 直交周波数分割多重システムおよび送受信装置
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
DE10162548A1 (de) 2001-12-19 2003-07-17 Siemens Ag Kombination von adaptiver Modulation und Space-Frequency-Block-Codierung oder Antennengewichtung
DE10162546A1 (de) 2001-12-19 2003-07-10 Siemens Ag Bit-Loading-Signalisierung für adaptive Modulation bei verschiedenen Sätzen von QAM-Alphabeten
KR100631177B1 (ko) * 2002-01-04 2006-10-04 노키아 코포레이션 고속송신 다이버시티 송수신
US6980614B2 (en) 2002-01-14 2005-12-27 Raytheon Company System and method for subband beamforming using adaptive weight normalization
US7499709B2 (en) * 2002-02-07 2009-03-03 Alcatel-Lucent Usa Inc. Method and apparatus for closed loop transmit diversity in a wireless communications system
US7116944B2 (en) * 2002-02-07 2006-10-03 Lucent Technologies Inc. Method and apparatus for feedback error detection in a wireless communications systems
US7298717B2 (en) * 2002-02-15 2007-11-20 Texas Instruments Incorporated Method and apparatus for providing transmit diversity with adaptive basis
US6862271B2 (en) * 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
US7197084B2 (en) * 2002-03-27 2007-03-27 Qualcomm Incorporated Precoding for a multipath channel in a MIMO system
TW522639B (en) * 2002-03-28 2003-03-01 Accton Technology Corp Orthogonally-multiplexed orthogonal amplitude modulation method and device
US7103325B1 (en) * 2002-04-05 2006-09-05 Nortel Networks Limited Adaptive modulation and coding
US7522673B2 (en) 2002-04-22 2009-04-21 Regents Of The University Of Minnesota Space-time coding using estimated channel information
US7327800B2 (en) * 2002-05-24 2008-02-05 Vecima Networks Inc. System and method for data detection in wireless communication systems
JP4140816B2 (ja) 2002-05-24 2008-08-27 富士通株式会社 マイクロミラー素子
JP4125913B2 (ja) * 2002-05-24 2008-07-30 松下電器産業株式会社 無線送信装置、無線受信装置および無線通信システム
EP1367760B1 (en) 2002-05-27 2009-11-18 Nokia Corporation Transmit/receive diversity wireless communication
US7181246B2 (en) * 2002-06-05 2007-02-20 Neocific, Inc. Adaptive communications system and method
KR100498326B1 (ko) 2002-06-18 2005-07-01 엘지전자 주식회사 이동통신 단말기의 적응 변조 코딩 장치 및 방법
TW567696B (en) 2002-07-19 2003-12-21 Silicon Integrated Sys Corp Channel estimator for WLAN
JP2004064108A (ja) * 2002-07-24 2004-02-26 Natl Univ Of Singapore 無線通信装置及び方法
US20040032910A1 (en) * 2002-08-13 2004-02-19 Jyhchau Horng MIMO systems with STTD encoding and dynamic power allocation
US6940917B2 (en) * 2002-08-27 2005-09-06 Qualcomm, Incorporated Beam-steering and beam-forming for wideband MIMO/MISO systems
KR100630108B1 (ko) * 2002-10-10 2006-09-27 삼성전자주식회사 공간-시간 블럭부호를 사용하여 송신 안테나 다이버시티를지원하는 송수신 장치
JP4331563B2 (ja) 2002-10-10 2009-09-16 三星電子株式会社 空間−時間ブロック符号を用いて送信アンテナダイバシティを支援する送受信装置
US20040121730A1 (en) * 2002-10-16 2004-06-24 Tamer Kadous Transmission scheme for multi-carrier MIMO systems
US8218609B2 (en) * 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US7002900B2 (en) * 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US8320301B2 (en) * 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US20050239488A1 (en) 2002-11-01 2005-10-27 Matsushita Electric Industrial Co., Ltd Multi-carrier communication method and multi-carrier communication method
JP4291669B2 (ja) * 2002-11-01 2009-07-08 パナソニック株式会社 マルチキャリア通信装置およびマルチキャリア通信方法
JP4091827B2 (ja) * 2002-11-26 2008-05-28 松下電器産業株式会社 無線送信装置および無線受信装置
KR100511559B1 (ko) * 2002-11-28 2005-08-31 한국전자통신연구원 시변 채널 왜곡 제거 기능을 가지는 주파수 분할 다중시스템에서의 송수신 방법
KR100494844B1 (ko) * 2002-12-21 2005-06-14 한국전자통신연구원 통신 시스템의 적응형 자원 할당 방법
JP4163941B2 (ja) * 2002-12-24 2008-10-08 松下電器産業株式会社 無線送信装置及び無線送信方法
KR100552669B1 (ko) * 2002-12-26 2006-02-20 한국전자통신연구원 층적 공간-시간 구조의 검파기를 갖는 다중 입출력시스템에 적용되는 적응 변복조 장치 및 그 방법
JP4256158B2 (ja) 2002-12-26 2009-04-22 パナソニック株式会社 無線通信装置及び無線通信方法
US7813440B2 (en) 2003-01-31 2010-10-12 Ntt Docomo, Inc. Multiple-output multiple-input (MIMO) communication system, MIMO receiver and MIMO receiving method
US7782970B2 (en) * 2003-02-27 2010-08-24 Intel Corporation Apparatus and associated methods to introduce diversity in a multicarrier communication channel
US7983355B2 (en) * 2003-07-09 2011-07-19 Broadcom Corporation System and method for RF signal combining and adaptive bit loading for data rate maximization in multi-antenna communication systems
US20040192218A1 (en) * 2003-03-31 2004-09-30 Oprea Alexandru M. System and method for channel data transmission in wireless communication systems
KR100591890B1 (ko) * 2003-04-01 2006-06-20 한국전자통신연구원 다중 안테나 무선 통신 시스템에서의 적응 송수신 방법 및그 장치
CA2427403C (en) * 2003-04-21 2008-10-28 Regents Of The University Of Minnesota Space-time-frequency coded ofdm over frequency-selective fading channels
FI20031079A0 (fi) * 2003-07-16 2003-07-16 Nokia Corp Menetelmä tiedonsiirtoresurssien kontrolloimiseksi, sekä kontrolleri
BRPI0412570A (pt) * 2003-07-16 2006-09-19 Nokia Corp método e arranjo para controlar recursos de comunicação de um sistema de telecomunicações, e, controlador de um sistema de telecomunicações
US20050047517A1 (en) * 2003-09-03 2005-03-03 Georgios Giannakis B. Adaptive modulation for multi-antenna transmissions with partial channel knowledge
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
WO2005029758A2 (en) * 2003-09-15 2005-03-31 Intel Corporation Multiple antenna systems and methods using high-throughput space-frequency block codes
US7440510B2 (en) * 2003-09-15 2008-10-21 Intel Corporation Multicarrier transmitter, multicarrier receiver, and methods for communicating multiple spatial signal streams
US7315577B2 (en) * 2003-09-15 2008-01-01 Intel Corporation Multiple antenna systems and method using high-throughput space-frequency block codes
GB2416465A (en) * 2004-05-12 2006-01-25 Toshiba Res Europ Ltd Transmitting a signal using Alamouti encoding and receiving the signal using ordered successive interference cancellation (OSIC)
US7724835B2 (en) 2004-05-17 2010-05-25 Qualcomm Incorporated Space-time block coding in orthogonal frequency division communication systems
WO2005125044A1 (en) * 2004-06-22 2005-12-29 Nortel Networks Limited Closed loop mimo systems and methods
US7570696B2 (en) * 2004-06-25 2009-08-04 Intel Corporation Multiple input multiple output multicarrier communication system and methods with quantized beamforming feedback
EP1768271B1 (en) 2004-08-11 2018-12-12 Panasonic Intellectual Property Management Co., Ltd. Communication system, base station control device, and base station device
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
US7599419B2 (en) * 2005-01-14 2009-10-06 The Regents Of The University Of California Method and apparatus for use of space time trellis codes based on channel phase feedback
US20060173977A1 (en) * 2005-02-03 2006-08-03 Next Generation Broadband A process for dynamic user control on always-on ip network
KR100662184B1 (ko) * 2005-07-22 2006-12-27 제일모직주식회사 비할로겐계 난연성 열가소성 수지 조성물
US7548730B2 (en) * 2006-03-16 2009-06-16 Intel Corporation Systems and methods for improving performance of multiple spatial communication channels
US7944985B2 (en) * 2006-08-24 2011-05-17 Interdigital Technology Corporation MIMO transmitter and receiver for supporting downlink communication of single channel codewords
US7715485B1 (en) * 2007-01-08 2010-05-11 L-3 Communications, Corp. MIMO communication using interference cancellation and unequal transmit power distribution
US8254429B1 (en) * 2007-10-02 2012-08-28 Apple Inc. Communication systems and methods
US7826853B2 (en) * 2007-11-02 2010-11-02 Mitsubishi Electric Research Laboratories, Inc. Cooperative base stations in wireless networks
KR100925440B1 (ko) * 2008-01-28 2009-11-06 엘지전자 주식회사 물리 하이브리드 ａｒｑ 지시 채널 할당 방법

Also Published As

Publication number Publication date
JP2008510386A (ja) 2008-04-03
TW201320667A (zh) 2013-05-16
CN102638298B (zh) 2015-08-19
AR076294A2 (es) 2011-06-01
JP2012070382A (ja) 2012-04-05
TWI455535B (zh) 2014-10-01
EP1779623A2 (en) 2007-05-02
KR20130053423A (ko) 2013-05-23
TWM287552U (en) 2006-02-11
AU2005272789B2 (en) 2009-02-05
NO20071317L (no) 2007-03-12
KR101314423B1 (ko) 2013-10-04
AR050455A1 (es) 2006-10-25
ATE527794T1 (de) 2011-10-15
US10630427B2 (en) 2020-04-21
AU2009201306B2 (en) 2011-09-22
HK1175040A1 (zh) 2013-06-21
ES2339788T3 (es) 2010-05-25
US20180205500A1 (en) 2018-07-19
JP2015156654A (ja) 2015-08-27
TWI517638B (zh) 2016-01-11
EP1779623B1 (en) 2010-01-20
CA2771267A1 (en) 2006-02-23
US7505529B2 (en) 2009-03-17
JP2013048468A (ja) 2013-03-07
CN102638298A (zh) 2012-08-15
TW201347477A (zh) 2013-11-16
TW200704058A (en) 2007-01-16
US8532210B2 (en) 2013-09-10
TWI543572B (zh) 2016-07-21
ATE456232T1 (de) 2010-02-15
US20170163382A1 (en) 2017-06-08
KR20120120489A (ko) 2012-11-01
US20090129499A1 (en) 2009-05-21
JP6263488B2 (ja) 2018-01-17
AU2005272789A1 (en) 2006-02-23
KR20120036913A (ko) 2012-04-18
EP2180647B1 (en) 2011-10-05
EP2180647A1 (en) 2010-04-28
NO339219B1 (no) 2016-11-14
CA2576842A1 (en) 2006-02-23
CN200973110Y (zh) 2007-11-07
KR20060050441A (ko) 2006-05-19
US20150236815A1 (en) 2015-08-20
US9887808B2 (en) 2018-02-06
JP2016195464A (ja) 2016-11-17
CN102664661A (zh) 2012-09-12
IL181113A0 (en) 2007-07-04
US20060072677A1 (en) 2006-04-06
KR101282592B1 (ko) 2013-07-12
DE602005019062D1 (de) 2010-03-11
EP1779623A4 (en) 2007-10-31
AR066342A2 (es) 2009-08-12
KR101251931B1 (ko) 2013-04-08
JP2013232949A (ja) 2013-11-14
WO2006020741A3 (en) 2006-06-01
BRPI0515010A (pt) 2008-07-01
JP5916664B2 (ja) 2016-05-11
DE202005012766U1 (de) 2006-01-05
MY154510A (en) 2015-06-30
CA2771267C (en) 2016-03-15
US9608772B2 (en) 2017-03-28
AU2009201306B8 (en) 2012-01-19
US9306702B2 (en) 2016-04-05
TW200623755A (en) 2006-07-01
US20140010323A1 (en) 2014-01-09
WO2006020741A2 (en) 2006-02-23
US9054924B2 (en) 2015-06-09
CN101002447A (zh) 2007-07-18
AU2009201306A1 (en) 2009-04-23
MX2007001764A (es) 2007-07-11
US20160191208A1 (en) 2016-06-30
MY143899A (en) 2011-07-29
DK1779623T3 (da) 2010-05-25

Similar Documents

Publication Publication Date Title
TWI379560B (en) Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system
CA2587846C (en) Method and apparatus for combining space-frequency block coding, spatial multiplexing and beamforming in a mimo-ofdm system
JP5236753B2 (ja) 開ループ空間多重化モードでの信号送受信方法
JP2008510386A5 (zh)
KR101527009B1 (ko) 다중 셀 기반에서 멀티-셀 ｍｉｍｏ 적용 방법
AU2011265400B2 (en) Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system
KR200402027Y1 (ko) 직교 주파수 분할 다중화 통신에 대한 공간 주파수 블럭코딩을 구현하는 무선 송수신 유닛 및 기지국