JP5709774B2 - 無線多入力多出力(mimo)ネットワークにおいて送信機と受信機との間のチャネルのためのチャネル行列を推定するための方法 - Google Patents
無線多入力多出力(mimo)ネットワークにおいて送信機と受信機との間のチャネルのためのチャネル行列を推定するための方法 Download PDFInfo
- Publication number
- JP5709774B2 JP5709774B2 JP2012008119A JP2012008119A JP5709774B2 JP 5709774 B2 JP5709774 B2 JP 5709774B2 JP 2012008119 A JP2012008119 A JP 2012008119A JP 2012008119 A JP2012008119 A JP 2012008119A JP 5709774 B2 JP5709774 B2 JP 5709774B2
- Authority
- JP
- Japan
- Prior art keywords
- channel
- matrix
- order
- signal
- receiver
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 63
- 239000011159 matrix material Substances 0.000 title claims description 50
- 239000013598 vector Substances 0.000 claims description 12
- 238000005562 fading Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000006870 function Effects 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Images
Classifications
-
- 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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
- H04L25/0246—Channel estimation channel estimation algorithms using matrix methods with factorisation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Radio Transmission System (AREA)
Description
従来のチャネル推定法と比べて、本発明は以下の利点を有する。
Claims (7)
- 無線多入力多出力(MIMO)ネットワークにおいて送信機と受信機との間のチャネルのためのチャネル行列を推定するための方法であって、該送信機は1組のM個の送信アンテナを含み、該受信機は1組のN個の受信アンテナを含み、該方法は、
送信信号x(k)のk個のシンボルをバッファリングされた信号x’(k)としてバッファリングするステップと、
Dが最大多項式次数であり、D’(k)が次数拡張行列であり、Pがk個のシンボルのチャネルメモリの最大長としたとき、前記バッファリングされた信号を大きさM(P+1)(D+1)のD次多項式信号u=D’(k)x’(k)に拡張するステップと、
前記D次多項式信号u、前記送信信号x(k)に対応する受信信号y(k)及び信号相関行列Rに基づいて、次数拡張再帰的最小二乗(RLS)プロセスを用いて、次数拡張チャネル行列G’(k)の推定値を求めるステップと、
スパース期待値最大化(EM)を用いて前記推定値を精緻化するステップと、
G’(k)D’(k)としてチャネル行列の推定値H’(k)を得るために、前記次数拡張チャネル行列G’(k)を折りたたむステップと
を含み、
前記精緻化するステップは、
高次行列再帰を用いて前記EM手順のための相関行列A及びBを求めること、
Iを恒等行列としたとき、期待値S=G’(k)(I−A)+Bを求めること、及び
aをEM定数、gを疎性制御係数、パラメータagを前記EM定数aと前記疎性制御係数gとの積としたとき、G’(k)が収束するまで、前記期待値Sと前記パラメータagとの関数で定義される閾値F th (S,ag)の値でG’(k)を更新すること
を含み、
各前記ステップは前記受信機のプロセッサにおいて実行される、方法。 - 前記チャネル行列H’(k)は、高速フェージング及びスパースチャネルの場合に最適である、請求項1に記載の方法。
- 前記推定値を求めるステップは、
順方向誤差ベクトルeを求めること、
更新ベクトルqを生成すること、及び
前記相関行列Rを更新して、次数拡張チャネル行列G’(k)の前記推定値を得ること、
を更に含む、請求項1に記載の方法。 - 前記拡張再帰的最小二乗(RLS)プロセスは、高次多項式回帰を用いる、請求項1に記載の方法。
- 前記送信信号はトレーニング系列及びデータ系列を含むパケットであり、前記受信機は、復号及び決定後に、該トレーニング系列及び該データ系列をチャネル推定信号として用いる、請求項1に記載の方法。
- 前記次数拡張再帰的最小二乗(RLS)プロセスはテイラー級数展開を用いる、請求項1に記載の方法。
- 前記次数拡張再帰的最小二乗(RLS)プロセスはフーリエ級数展開を用いる、請求項1に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/023,231 | 2011-02-08 | ||
US13/023,231 US8451930B2 (en) | 2011-02-08 | 2011-02-08 | Sparse channel estimation using order extension for frequency and time selective MIMO wireless communication networks |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012165370A JP2012165370A (ja) | 2012-08-30 |
JP5709774B2 true JP5709774B2 (ja) | 2015-04-30 |
Family
ID=46600615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012008119A Active JP5709774B2 (ja) | 2011-02-08 | 2012-01-18 | 無線多入力多出力(mimo)ネットワークにおいて送信機と受信機との間のチャネルのためのチャネル行列を推定するための方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US8451930B2 (ja) |
JP (1) | JP5709774B2 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9008202B2 (en) * | 2012-03-13 | 2015-04-14 | Qualcomm Incorporated | Fast and robust estimation of jointly sparse channels |
US8873683B2 (en) * | 2012-12-07 | 2014-10-28 | Intel Mobile Communications GmbH | Interference and noise estimation in a multiple input multiple output (MIMO) receiver |
EP2992824B1 (en) | 2013-05-01 | 2021-12-29 | Advanced Telecommunications Research Institute International | Brain activity analysis device and brain activity analysis method |
US9325533B2 (en) * | 2013-11-06 | 2016-04-26 | Ixia | Systems and methods for improved wireless channel estimation |
US9270497B2 (en) | 2014-06-18 | 2016-02-23 | Ixia | Systems and methods for improved wireless channel estimation |
US9392474B2 (en) | 2014-07-08 | 2016-07-12 | Ixia | Methods, systems, and computer readable media for determining a metric of radio frequency channel quality for idle channels in LTE and LTE advanced networks |
US9735931B2 (en) * | 2014-10-30 | 2017-08-15 | Huawei Technologies Co., Ltd. | System and method for detecting active user equipments |
CN104796361A (zh) * | 2015-04-24 | 2015-07-22 | 清华大学 | 基于非正交导频的时频联合的信道估计方法及***、天线 |
CN104935531A (zh) * | 2015-04-24 | 2015-09-23 | 清华大学 | 基于时间相关性和结构化压缩感知的窄带干扰估计方法 |
CN104796362A (zh) * | 2015-04-24 | 2015-07-22 | 清华大学 | 基于时域训练序列的信道估计的方法及***、天线 |
US9509443B1 (en) * | 2015-06-03 | 2016-11-29 | Huawei Technologies Co., Ltd. | Transmission schemes for device communications |
US10027389B2 (en) | 2015-07-13 | 2018-07-17 | Samsung Electronics Co., Ltd. | Hybrid precoding design for multiple input multiple output system with few-bit analog to digital converters |
EP3297236A1 (en) * | 2016-09-15 | 2018-03-21 | Mitsubishi Electric R & D Centre Europe B.V. | Efficient sparse channel estimation based on compressed sensing |
JP6722845B2 (ja) | 2017-10-03 | 2020-07-15 | 株式会社国際電気通信基礎技術研究所 | 判別装置、うつ症状の判別方法、うつ症状のレベルの判定方法、うつ病患者の層別化方法、うつ症状の治療効果の判定方法及び脳活動訓練装置 |
WO2019100332A1 (en) * | 2017-11-24 | 2019-05-31 | Nokia Shanghai Bell Co., Ltd. | Method and apparatus for signal detection in a wireless communication system |
US10348388B1 (en) | 2018-04-30 | 2019-07-09 | Khalifa University of Science and Technology | Direct data detection for MIMO communications systems |
CN109743269A (zh) * | 2019-02-19 | 2019-05-10 | 哈尔滨工程大学 | 一种基于数据拟合的水声ofdm信道重构方法 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5956624A (en) * | 1994-07-12 | 1999-09-21 | Usa Digital Radio Partners Lp | Method and system for simultaneously broadcasting and receiving digital and analog signals |
US7092457B1 (en) * | 2000-01-18 | 2006-08-15 | University Of Southern California | Adaptive iterative detection |
GB2395871B (en) * | 2002-11-28 | 2006-01-11 | Toshiba Res Europ Ltd | Signal estimation methods and apparatus |
US20040132414A1 (en) * | 2002-11-29 | 2004-07-08 | Sendyk Andrew M. | Method, apparatus and system for multiple signal transmission, reception, and restoration |
JP4847344B2 (ja) * | 2004-01-12 | 2011-12-28 | ネクスティビティ・インコーポレイテッド | 短距離セルラ・ブースタ |
JP4381900B2 (ja) * | 2004-06-18 | 2009-12-09 | 学校法人東京理科大学 | 通信路推定及びデータ検出方法 |
US7830976B2 (en) * | 2004-07-16 | 2010-11-09 | Qualcomm Incorporated | Iterative channel and interference estimation with dedicated pilot tones for OFDMA |
US7668269B2 (en) * | 2005-05-09 | 2010-02-23 | Ati Technologies, Inc. | Systems, methods, and apparatus for phase noise mitigation |
US8073135B2 (en) * | 2005-05-10 | 2011-12-06 | Adaptive Spectrum And Signal Alignment, Inc. | Binder identification |
US7817745B2 (en) * | 2005-06-02 | 2010-10-19 | Adaptive Spectrum And Signal Alignment, Inc. | Tonal precoding |
KR100800668B1 (ko) * | 2006-09-29 | 2008-02-01 | 삼성전자주식회사 | 직교주파수 분할다중 무선통신 시스템에서의 채널 추정방법 및 장치 |
US7801232B2 (en) * | 2006-09-29 | 2010-09-21 | Samsung Electronics Co., Ltd. | Channel estimation method and apparatus in an orthogonal frequency division multiplexing (OFDM) wireless communication system |
KR100787179B1 (ko) * | 2006-12-26 | 2007-12-21 | (주)카이로넷 | 무선통신 시스템의 셀 탐색장치 및 방법 |
EP2127281A1 (en) * | 2007-03-02 | 2009-12-02 | Qualcomm Incorporated | Automatic gain control and filtering techniques for use in on-channel repeater |
US8068562B1 (en) * | 2007-10-29 | 2011-11-29 | Qualcomm Atheros, Inc. | Signal processing for multiple chains including barker code correlation and auto-correlation |
TWI353756B (en) * | 2008-03-11 | 2011-12-01 | Univ Nat Chiao Tung | Method for ofdm and ofdma channel estimation |
US8582674B2 (en) * | 2009-11-24 | 2013-11-12 | Qualcomm Incorporated | Apparatus and method for channel estimation using compressive sensing based on Taylor series expansion |
US8665971B2 (en) * | 2009-11-24 | 2014-03-04 | Qualcomm, Incorporated | Apparatus and method for channel estimation using compressive sensing |
EP2509366B1 (en) * | 2009-11-30 | 2019-10-09 | LG Electronics Inc. | Terminal device for receiving signal in wireless communication system for supporting a plurality of component carriers and method thereof |
US8509330B2 (en) * | 2010-09-30 | 2013-08-13 | Mitsubishi Electric Research Laboratories, Inc. | Method for estimating time-varying and frequency-selective channels |
US9294310B2 (en) * | 2010-10-08 | 2016-03-22 | Blackberry Limited | Method and apparatus for LTE channel state information estimation |
-
2011
- 2011-02-08 US US13/023,231 patent/US8451930B2/en active Active
-
2012
- 2012-01-18 JP JP2012008119A patent/JP5709774B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP2012165370A (ja) | 2012-08-30 |
US8451930B2 (en) | 2013-05-28 |
US20120201320A1 (en) | 2012-08-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5709774B2 (ja) | 無線多入力多出力(mimo)ネットワークにおいて送信機と受信機との間のチャネルのためのチャネル行列を推定するための方法 | |
CN112804695B (zh) | 可重构智能表面辅助的无线通信方法及装置 | |
CN106656874B (zh) | 一种基于压缩感知的移动ofdm***信道估计方法 | |
CN106130939B (zh) | 一种迭代的mimo-ofdm***中快时变信道估计方法 | |
CN107947840B (zh) | 基于毫米波大规模mimo的时间反演抗干扰方法 | |
KR100712069B1 (ko) | 다중안테나 시스템의 전송채널 추정 방법 | |
CN109039960A (zh) | 一种水声稀疏信道估计变步长稀疏度自适应匹配追踪方法 | |
CN104320369B (zh) | 一种基于信道估计误差和数据检测误差的迭代方法 | |
CN108964725B (zh) | 时变大规模mimo网络中信道参数的稀疏估计方法 | |
CN104869086B (zh) | 基于二维压缩感知的mimo‑ofdm通信***下行信道估计方法、装置 | |
CN106716866B (zh) | 乒乓波束成形 | |
KR100975313B1 (ko) | 다중 입출력 무선통신 시스템에서 다변 다항식을 이용한신호검출 장치 및 방법 | |
CN106233685B (zh) | 用于大规模mimo***的混合模拟数字预编码的方法 | |
Masmoudi et al. | A maximum-likelihood channel estimator in MIMO full-duplex systems | |
CN114172597A (zh) | 一种基于可重构智能表面的非迭代参数联合估计方法 | |
CN106972875B (zh) | 一种mimo***下多维联合估计动态稀疏信道的方法 | |
CN101018219A (zh) | 一种空频信号处理方法 | |
CN113055317A (zh) | 一种水声ofdm***正交匹配追踪信道估计方法 | |
CN111107023B (zh) | 在大规模mimo中基于光滑范数的压缩感知信道估计方法 | |
Yi et al. | OFDM symbol detection integrated with channel multipath gains estimation for doubly-selective fading channels | |
Yang et al. | Joint Adaptive Blind Channel Estimation and Data Detection for MIMO‐OFDM Systems | |
CN101494625A (zh) | 一种线性均衡方法及线性均衡器 | |
CN106534028B (zh) | 基于压缩感知的ofdm信道跟踪方法 | |
CN114301508A (zh) | 基于过时csi的可重构智能表面辅助mimo传输中的双时间尺度优化方法 | |
Tsinos et al. | Sparse subspace tracking techniques for adaptive blind channel identification in OFDM systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20141106 |
|
A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20141106 |
|
A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20141128 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20141209 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150114 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20150203 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20150303 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5709774 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |