JP4364802B2 - 多入力/多出力ワイヤレス通信システムにおいてデータシンボルストリームを送信する方法及び多入力/多出力ワイヤレス通信システム用の送信機 - Google Patents
多入力/多出力ワイヤレス通信システムにおいてデータシンボルストリームを送信する方法及び多入力/多出力ワイヤレス通信システム用の送信機 Download PDFInfo
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- JP4364802B2 JP4364802B2 JP2004548090A JP2004548090A JP4364802B2 JP 4364802 B2 JP4364802 B2 JP 4364802B2 JP 2004548090 A JP2004548090 A JP 2004548090A JP 2004548090 A JP2004548090 A JP 2004548090A JP 4364802 B2 JP4364802 B2 JP 4364802B2
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- 238000004891 communication Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000003044 adaptive effect Effects 0.000 description 5
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- 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
- 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
-
- 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
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- 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
- 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
-
- 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
- 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
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
-
- 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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Radio Transmission System (AREA)
Description
Claims (2)
- Nr個の送信アンテナを含む多入力/多出力ワイヤレス通信システムにおいてデータシンボルストリームを送信する方法であって、
前記データシンボルストリームをM=Nr/2であるM個のサブストリームに逆多重化することと、
各サブストリームを送信信号対に時空間伝送ダイバシティ符号化することと、
送信信号に用いられるチャンネルのチャンネル係数の大きさの総和の比を含み、受信機から受信した対応するフィードバック信号に従って、各対の各送信信号に動的に電力を割り当てることと
を備え、
i番目の送信機アンテナとj番目の受信機アンテナとの間のチャンネルのチャンネル係数をh ij とし、前記受信機アンテナの数をN r としたときに、重みw 1 及びw 2 は、それぞれ下式
データシンボルストリームを送信する方法。 - Nr個の送信アンテナを含む多入力/多出力ワイヤレス通信システム用の送信機であって、
データシンボルストリームをM=Nr/2であるM個のサブストリームとして出力するように構成されたデマルチプレクサと、
各サブストリームを送信信号対に符号化するように構成された時空間伝送ダイバシティエンコーダと、
送信信号に用いられるチャンネルのチャンネル係数の大きさの総和の比を含み、受信機から受信した対応するフィードバック信号に従って、前記送信信号対の電力がそれぞれ正の実数w 1 およびw 2 によって、w 1 2 +w 2 2 =1となるように重み付けすることにより、各対の各送信信号に動的に電力を割り当てるように構成された電力増幅器と
を備え、
i番目の送信機アンテナとj番目の受信機アンテナとの間のチャンネルのチャンネル係数をh ij とし、jをN r としたときに、前記重みw 1 及びw 2 は、それぞれ下式
多入力/多出力ワイヤレス通信システム用の送信機。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/285,269 US7263132B2 (en) | 2002-08-13 | 2002-10-31 | Adaptive space-time transmit diversity coding for MIMO systems |
PCT/JP2003/013940 WO2004040833A1 (en) | 2002-10-31 | 2003-10-30 | Dynamic power control for space time diversity transmit antenna pairs |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006505184A JP2006505184A (ja) | 2006-02-09 |
JP4364802B2 true JP4364802B2 (ja) | 2009-11-18 |
Family
ID=32228814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004548090A Expired - Fee Related JP4364802B2 (ja) | 2002-10-31 | 2003-10-30 | 多入力/多出力ワイヤレス通信システムにおいてデータシンボルストリームを送信する方法及び多入力/多出力ワイヤレス通信システム用の送信機 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7263132B2 (ja) |
EP (1) | EP1563633B1 (ja) |
JP (1) | JP4364802B2 (ja) |
CN (1) | CN100375419C (ja) |
DE (1) | DE60313655T2 (ja) |
WO (1) | WO2004040833A1 (ja) |
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JP2005260502A (ja) * | 2004-03-10 | 2005-09-22 | Nec Corp | 通信装置と通信制御方法 |
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-
2002
- 2002-10-31 US US10/285,269 patent/US7263132B2/en not_active Expired - Fee Related
-
2003
- 2003-10-30 WO PCT/JP2003/013940 patent/WO2004040833A1/en active IP Right Grant
- 2003-10-30 CN CNB2003801000507A patent/CN100375419C/zh not_active Expired - Fee Related
- 2003-10-30 JP JP2004548090A patent/JP4364802B2/ja not_active Expired - Fee Related
- 2003-10-30 DE DE60313655T patent/DE60313655T2/de not_active Expired - Lifetime
- 2003-10-30 EP EP03770034A patent/EP1563633B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
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US20040033782A1 (en) | 2004-02-19 |
US7263132B2 (en) | 2007-08-28 |
DE60313655T2 (de) | 2008-01-31 |
JP2006505184A (ja) | 2006-02-09 |
WO2004040833A1 (en) | 2004-05-13 |
EP1563633B1 (en) | 2007-05-02 |
CN100375419C (zh) | 2008-03-12 |
EP1563633A1 (en) | 2005-08-17 |
DE60313655D1 (de) | 2007-06-14 |
CN1685651A (zh) | 2005-10-19 |
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