TWI499233B - 無線裝置 - Google Patents
無線裝置 Download PDFInfo
- Publication number
- TWI499233B TWI499233B TW102144351A TW102144351A TWI499233B TW I499233 B TWI499233 B TW I499233B TW 102144351 A TW102144351 A TW 102144351A TW 102144351 A TW102144351 A TW 102144351A TW I499233 B TWI499233 B TW I499233B
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- stream
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- Prior art date
Links
- 238000012545 processing Methods 0.000 claims description 82
- 230000005540 biological transmission Effects 0.000 claims description 72
- 238000000034 method Methods 0.000 claims description 26
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 19
- 238000012549 training Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 13
- 230000003044 adaptive effect Effects 0.000 description 12
- 239000011159 matrix material Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000003786 synthesis reaction Methods 0.000 description 10
- 238000012546 transfer Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 238000009795 derivation Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 2
- 101000582320 Homo sapiens Neurogenic differentiation factor 6 Proteins 0.000 description 1
- 102100030589 Neurogenic differentiation factor 6 Human genes 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H04L27/2613—Structure of the reference signals
-
- 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
- H04L27/2613—Structure of the reference signals
- H04L27/26132—Structure of the reference signals using repetition
-
- 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
- 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
-
- 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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- 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
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
-
- 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
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- 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
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71692605P | 2005-09-15 | 2005-09-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201419782A TW201419782A (zh) | 2014-05-16 |
| TWI499233B true TWI499233B (zh) | 2015-09-01 |
Family
ID=37453394
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102144351A TWI499233B (zh) | 2005-09-15 | 2006-09-08 | 無線裝置 |
| TW095133214A TWI422176B (zh) | 2005-09-15 | 2006-09-08 | 無線裝置 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW095133214A TWI422176B (zh) | 2005-09-15 | 2006-09-08 | 無線裝置 |
Country Status (8)
| Country | Link |
|---|---|
| US (3) | US7899413B2 (enExample) |
| EP (1) | EP1925104B1 (enExample) |
| JP (6) | JP3989512B2 (enExample) |
| KR (2) | KR101124122B1 (enExample) |
| CN (2) | CN101107792B (enExample) |
| DE (1) | DE602006019279D1 (enExample) |
| TW (2) | TWI499233B (enExample) |
| WO (1) | WO2007032413A1 (enExample) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4065276B2 (ja) * | 2004-11-12 | 2008-03-19 | 三洋電機株式会社 | 送信方法およびそれを利用した無線装置 |
| JP3989512B2 (ja) | 2005-09-15 | 2007-10-10 | 三洋電機株式会社 | 無線装置 |
| JP5044165B2 (ja) | 2006-08-14 | 2012-10-10 | 株式会社東芝 | マルチアンテナ無線通信システムにおける送信機、受信機及び方法 |
| EP2197132B1 (en) | 2007-10-01 | 2018-06-06 | Panasonic Corporation | Radio communication device and response signal spreading method |
| WO2010095802A1 (en) | 2009-02-18 | 2010-08-26 | Lg Electronics Inc. | Coexistent channel access method |
| US8301177B2 (en) * | 2009-03-03 | 2012-10-30 | Intel Corporation | Efficient paging operation for femtocell deployment |
| JP5718346B2 (ja) | 2009-10-23 | 2015-05-13 | マーベル ワールド トレード リミテッド | データユニットのプリアンブルを生成又は受信する方法及び装置 |
| EP2497304B1 (en) | 2009-11-03 | 2018-06-20 | Marvell World Trade Ltd. | Power saving in a communication device |
| JP5259809B2 (ja) * | 2011-12-05 | 2013-08-07 | 株式会社東芝 | マルチアンテナ無線通信システムにおける送信機、受信機及び方法 |
| JP5210441B1 (ja) * | 2012-01-10 | 2013-06-12 | 株式会社エヌ・ティ・ティ・ドコモ | 無線リソースの管理方法および管理装置 |
| CN106605374A (zh) * | 2014-10-07 | 2017-04-26 | 英特尔公司 | 高效信号字段的并行传输 |
| CN115298998A (zh) * | 2020-03-31 | 2022-11-04 | 索尼集团公司 | 用于传送基准信令的方法、发送节点和接收节点 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003001702A1 (en) * | 2001-06-26 | 2003-01-03 | Qualcomm Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission |
| US20030076777A1 (en) * | 2001-09-17 | 2003-04-24 | Stuber Gordon L. | Apparatus and methods for providing efficient space-time structures for preambles, pilots and data for multi-input, multi-output communications systems |
| US20040081073A1 (en) * | 2002-10-25 | 2004-04-29 | Walton J. Rodney | Transmit diversity processing for a multi-antenna communication system |
| TW200419947A (en) * | 2002-09-04 | 2004-10-01 | Qualcomm Inc | Channel estimation for communication systems |
| EP1524813A2 (en) * | 2003-10-16 | 2005-04-20 | Samsung Electronics Co., Ltd. | Method of transmitting preamble for synchronizing in a mimo-ofdm communication system |
Family Cites Families (48)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002026796A (ja) | 1998-04-07 | 2002-01-25 | Matsushita Electric Ind Co Ltd | 無線通信装置及び無線通信システム |
| JP3581282B2 (ja) * | 1999-09-17 | 2004-10-27 | 松下電器産業株式会社 | 基地局装置およびアンテナ制御方法 |
| 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 |
| US20020193146A1 (en) | 2001-06-06 | 2002-12-19 | Mark Wallace | Method and apparatus for antenna diversity in a wireless communication system |
| GB0125178D0 (en) * | 2001-10-19 | 2001-12-12 | Koninkl Philips Electronics Nv | Method of operating a wireless communication system |
| JP3625280B2 (ja) * | 2001-11-02 | 2005-03-02 | 松下電器産業株式会社 | 通信方法、通信装置及び通信システム |
| SE0201103D0 (sv) | 2002-04-11 | 2002-04-11 | Ericsson Telefon Ab L M | Diagonally Layered Multi-Antenna Transmission for Frequency Selective Channels |
| JP2004080110A (ja) * | 2002-08-09 | 2004-03-11 | Samsung Yokohama Research Institute Co Ltd | 直交周波数分割多重通信システム、及び直交周波数分割多重無線機 |
| GB2392065B (en) | 2002-08-15 | 2004-12-29 | Toshiba Res Europ Ltd | Signal decoding methods and apparatus |
| US7263385B2 (en) | 2002-08-23 | 2007-08-28 | Qualcomm Incorporated | System and method for beamforming with data rate control feedback |
| US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
| FR2848747A1 (fr) * | 2002-12-16 | 2004-06-18 | France Telecom | Procede et dispositif multi-antenne de transmission de signaux |
| US7310379B2 (en) * | 2002-12-30 | 2007-12-18 | Motorola, Inc. | Polarization state techniques for wireless communications |
| WO2004075451A1 (ja) | 2003-01-29 | 2004-09-02 | Mitsubishi Denki Kabushiki Kaisha | マルチキャリア無線通信システム、送信装置および受信装置 |
| US20040192216A1 (en) | 2003-03-31 | 2004-09-30 | Marzetta Thomas Louis | Training for MIMO communication systems |
| KR20050119143A (ko) | 2003-04-21 | 2005-12-20 | 미쓰비시덴키 가부시키가이샤 | 무선통신장치, 송신장치, 수신장치 및 무선통신시스템 |
| JP4573834B2 (ja) * | 2003-06-30 | 2010-11-04 | アギア システムズ インコーポレーテッド | 時間直交シンボルを使用する複数アンテナ通信システムにおける後方互換性通信のための方法および装置 |
| US20070230431A1 (en) * | 2003-06-30 | 2007-10-04 | Bas Driesen | Methods and Apparatus for Backwards Compatible Communication in a Multiple Antenna Communication System Using Fmd-Based Preamble Structures |
| JP4536435B2 (ja) * | 2003-06-30 | 2010-09-01 | パナソニック株式会社 | 送信方法及び送信装置 |
| JP4323985B2 (ja) | 2003-08-07 | 2009-09-02 | パナソニック株式会社 | 無線送信装置及び無線送信方法 |
| US7616698B2 (en) * | 2003-11-04 | 2009-11-10 | Atheros Communications, Inc. | Multiple-input multiple output system and method |
| JP4212548B2 (ja) | 2003-12-26 | 2009-01-21 | 株式会社東芝 | 無線送信装置、無線受信装置、無線送信方法及び無線受信方法 |
| BR0318689A (pt) | 2003-12-30 | 2006-12-19 | Telecom Italia Spa | método e sistema para avaliar o campo recebido a partir de pelo menos uma fonte de campo eletromagnético em uma posição determinada do território coberto por uma rede de comunicação, rede de comunicação, terminal de rede de comunicação, métodos pára simular e planejar uma rede de rádio móvel e para localizar terminais móveis em uma rede de radio móvel e produto de programa de computador |
| US8194771B2 (en) * | 2004-01-27 | 2012-06-05 | Agere Systems Inc. | Transmission method and apparatus in a multiple antenna communication system |
| TWI253811B (en) * | 2004-01-28 | 2006-04-21 | Sanyo Electric Co | Transmission method and device, reception method and device, and communication system using the same |
| JP4130191B2 (ja) * | 2004-01-28 | 2008-08-06 | 三洋電機株式会社 | 送信装置 |
| US7457232B2 (en) * | 2004-02-04 | 2008-11-25 | Texas Instruments Incorporated | Frequency switched preamble design to minimize channel estimation time in MIMO communications systems |
| US7444134B2 (en) * | 2004-02-13 | 2008-10-28 | Broadcom Corporation | Device and method for transmitting long training sequence for wireless communications |
| US7423989B2 (en) | 2004-02-13 | 2008-09-09 | Broadcom Corporation | Preamble formats for MIMO wireless communications |
| US7586881B2 (en) * | 2004-02-13 | 2009-09-08 | Broadcom Corporation | MIMO wireless communication greenfield preamble formats |
| KR100798968B1 (ko) * | 2004-03-13 | 2008-01-28 | 삼성전자주식회사 | 직교 분할 다중 접속 시스템에서 파일럿 신호 송수신 방법 및 장치 |
| US7551589B2 (en) | 2004-04-02 | 2009-06-23 | Lg Electronics Inc. | Frame structure of uplink control information transmission channel in MIMO communication system |
| WO2005117314A1 (en) * | 2004-05-20 | 2005-12-08 | Conexant Systems, Inc. | Cyclic diversity systems and methods |
| US8089855B2 (en) * | 2004-06-04 | 2012-01-03 | Qualcomm Incorporated | Transmission of overhead information for broadcast and multicast services in a wireless communication system |
| WO2006002310A2 (en) * | 2004-06-22 | 2006-01-05 | Conexant Systems, Inc. | Legacy compatible spatial multiplexing systems and methods |
| EP2442513A1 (en) * | 2004-06-24 | 2012-04-18 | Nortel Networks Limited | Preambles in OFDMA System |
| US7773535B2 (en) * | 2004-08-12 | 2010-08-10 | Motorola, Inc. | Method and apparatus for closed loop transmission |
| JP4364100B2 (ja) | 2004-09-28 | 2009-11-11 | 株式会社東芝 | 無線通信装置 |
| US7436903B2 (en) * | 2004-09-29 | 2008-10-14 | Intel Corporation | Multicarrier transmitter and method for transmitting multiple data streams with cyclic delay diversity |
| JP4065276B2 (ja) * | 2004-11-12 | 2008-03-19 | 三洋電機株式会社 | 送信方法およびそれを利用した無線装置 |
| JP2006178042A (ja) | 2004-12-21 | 2006-07-06 | Oki Data Corp | 画像形成装置 |
| US20060227891A1 (en) * | 2005-04-07 | 2006-10-12 | Samsung Electronics Co., Ltd. | Method of channel estimation for MIMO-OFDM using phase rotated low overhead preamble |
| US8014463B2 (en) * | 2005-05-25 | 2011-09-06 | Qualcomm Incorporated | Delay diversity and spatial rotation systems and methods |
| US7738356B2 (en) * | 2005-06-28 | 2010-06-15 | Broadcom Corporation | Multiple stream cyclic-shifted delay transmitter |
| US7742390B2 (en) * | 2005-08-23 | 2010-06-22 | Agere Systems Inc. | Method and apparatus for improved long preamble formats in a multiple antenna communication system |
| JP4841331B2 (ja) * | 2005-09-14 | 2011-12-21 | 三洋電機株式会社 | 無線装置およびそれを利用した通信システム |
| JP3989512B2 (ja) | 2005-09-15 | 2007-10-10 | 三洋電機株式会社 | 無線装置 |
| JP4881796B2 (ja) | 2007-06-08 | 2012-02-22 | 日立アロカメディカル株式会社 | X線ct装置 |
-
2006
- 2006-06-28 JP JP2006178042A patent/JP3989512B2/ja active Active
- 2006-09-07 DE DE602006019279T patent/DE602006019279D1/de active Active
- 2006-09-07 WO PCT/JP2006/318210 patent/WO2007032413A1/en not_active Ceased
- 2006-09-07 EP EP06810117A patent/EP1925104B1/en active Active
- 2006-09-07 CN CN200680003246.8A patent/CN101107792B/zh not_active Expired - Fee Related
- 2006-09-07 CN CN201210544583.5A patent/CN103220030B/zh not_active Expired - Fee Related
- 2006-09-07 KR KR1020097022355A patent/KR101124122B1/ko active Active
- 2006-09-07 KR KR1020077028748A patent/KR100937802B1/ko active Active
- 2006-09-08 TW TW102144351A patent/TWI499233B/zh active
- 2006-09-08 TW TW095133214A patent/TWI422176B/zh active
- 2006-09-15 US US11/521,488 patent/US7899413B2/en active Active
-
2007
- 2007-05-31 JP JP2007145819A patent/JP4290210B2/ja active Active
-
2008
- 2008-10-22 JP JP2008272402A patent/JP4290218B2/ja active Active
- 2008-11-27 JP JP2008302066A patent/JP4290220B2/ja active Active
-
2009
- 2009-02-06 JP JP2009026157A patent/JP4884488B2/ja active Active
-
2011
- 2011-01-11 US US13/004,571 patent/US8380141B2/en active Active
- 2011-10-14 JP JP2011226732A patent/JP5361972B2/ja active Active
-
2013
- 2013-01-18 US US13/745,085 patent/US8976732B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003001702A1 (en) * | 2001-06-26 | 2003-01-03 | Qualcomm Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission |
| US20030076777A1 (en) * | 2001-09-17 | 2003-04-24 | Stuber Gordon L. | Apparatus and methods for providing efficient space-time structures for preambles, pilots and data for multi-input, multi-output communications systems |
| TW200419947A (en) * | 2002-09-04 | 2004-10-01 | Qualcomm Inc | Channel estimation for communication systems |
| US20040081073A1 (en) * | 2002-10-25 | 2004-04-29 | Walton J. Rodney | Transmit diversity processing for a multi-antenna communication system |
| EP1524813A2 (en) * | 2003-10-16 | 2005-04-20 | Samsung Electronics Co., Ltd. | Method of transmitting preamble for synchronizing in a mimo-ofdm communication system |
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