JP5720058B2 - Mimo検出装置 - Google Patents
Mimo検出装置 Download PDFInfo
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- JP5720058B2 JP5720058B2 JP2011097101A JP2011097101A JP5720058B2 JP 5720058 B2 JP5720058 B2 JP 5720058B2 JP 2011097101 A JP2011097101 A JP 2011097101A JP 2011097101 A JP2011097101 A JP 2011097101A JP 5720058 B2 JP5720058 B2 JP 5720058B2
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- 239000011159 matrix material Substances 0.000 claims description 143
- 238000004364 calculation method Methods 0.000 claims description 90
- 238000001514 detection method Methods 0.000 claims description 55
- 238000012545 processing Methods 0.000 claims description 49
- 238000004891 communication Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- 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
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- 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
- H04B7/0426—Power distribution
- H04B7/0434—Power distribution using multiple eigenmodes
- H04B7/0439—Power distribution using multiple eigenmodes utilizing channel inversion
-
- 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
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0222—Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
-
- 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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- 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
- H04L27/2657—Carrier synchronisation
-
- 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
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2675—Pilot or known symbols
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Radio Transmission System (AREA)
Description
Claims (3)
- 複数の送受信アンテナを用いて複数の伝搬路を形成するMIMO−OFDM方式の無線通信に用いられるMIMO検出装置であって、
前記MIMO検出装置は、無線通信の受信機側に設けられており、
前記MIMO検出装置は、
前記受信機にて受信した信号に基づく伝搬路の行列に対して、その逆行列を計算する逆行列計算手段と、
伝搬路の時間変動を推定する推定手段と、
前記推定手段により推定した伝搬路の時間変動に応じて、前記逆行列計算手段による逆行列の計算に要する処理時間を可変に制御する可変制御手段とを備え、
前記逆行列計算手段は、逆行列を計算する逆行列計算回路であって、
前記可変制御手段は、前記逆行列計算回路へ供給するクロック周波数および電圧を可変に制御することにより、逆行列の計算に要する処理時間を可変に制御する、MIMO検出装置。 - 前記受信機は、データを複数のパケットに分割して受信し、
前記可変制御手段は、前記推定手段により伝搬路の時間変動が大きいと推定されると、
逆行列の計算に要する処理時間を1パケットのガードインターバル時間になるよう、クロ
ック周波数および電圧を制御する、請求項1に記載のMIMO検出装置。 - 前記可変制御手段は、前記推定手段により伝搬路の時間変動が小さいと推定されると、逆
行列の計算に要する処理時間を1パケット分または複数パケット分の時間になるよう、ク
ロック周波数および電圧を制御する、請求項2に記載のMIMO検出装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011097101A JP5720058B2 (ja) | 2011-04-25 | 2011-04-25 | Mimo検出装置 |
US13/447,745 US8681905B2 (en) | 2011-04-25 | 2012-04-16 | MIMO detector |
Applications Claiming Priority (1)
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JP2011097101A JP5720058B2 (ja) | 2011-04-25 | 2011-04-25 | Mimo検出装置 |
Publications (2)
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JP2012231229A JP2012231229A (ja) | 2012-11-22 |
JP5720058B2 true JP5720058B2 (ja) | 2015-05-20 |
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JP2011097101A Active JP5720058B2 (ja) | 2011-04-25 | 2011-04-25 | Mimo検出装置 |
Country Status (2)
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US (1) | US8681905B2 (ja) |
JP (1) | JP5720058B2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102094726B1 (ko) | 2013-05-24 | 2020-03-30 | 삼성전자주식회사 | Ofdm 신호의 papr 저감 방법 및 장치, 송신 장치 |
WO2016168651A1 (en) | 2015-04-16 | 2016-10-20 | Andrew Wireless Systems Gmbh | Uplink signal combiners for mobile radio signal distribution systems using ethernet data networks |
US10756831B2 (en) * | 2017-07-31 | 2020-08-25 | Massachusetts Institute Of Technology | Characterizing transmit channels from an antenna array to a transceiver |
US10841217B2 (en) * | 2018-05-25 | 2020-11-17 | Analog Devices Global Unlimited Company | Multi-packet protocol header detection |
JPWO2023139679A1 (ja) * | 2022-01-19 | 2023-07-27 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3629261B2 (ja) | 2002-11-26 | 2005-03-16 | 松下電器産業株式会社 | 無線受信装置 |
US7558223B2 (en) * | 2005-04-04 | 2009-07-07 | Panasonic Corporation | OFDM receiving method of OFDM receiver for receiving an OFDM signal via a plurality of space paths |
US7555661B2 (en) * | 2005-05-03 | 2009-06-30 | Sirf Technology, Inc. | Power management in digital receivers that adjusts at least one a of clock rate and a bit width based on received signal |
JP5073433B2 (ja) * | 2007-02-22 | 2012-11-14 | ラピスセミコンダクタ株式会社 | Ofdm受信機 |
KR100948400B1 (ko) * | 2007-12-29 | 2010-03-19 | (주)카이로넷 | Ofdm 시스템 및 상기 ofdm 시스템의 셀간 간섭제거 방법 |
US7986919B2 (en) * | 2008-03-19 | 2011-07-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Simplified impairments matrix calculation for SINR estimation |
-
2011
- 2011-04-25 JP JP2011097101A patent/JP5720058B2/ja active Active
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2012
- 2012-04-16 US US13/447,745 patent/US8681905B2/en active Active
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JP2012231229A (ja) | 2012-11-22 |
US8681905B2 (en) | 2014-03-25 |
US20120269301A1 (en) | 2012-10-25 |
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