JP2015532036A - マルチ受信アンテナシステムにおけるチャネル推定方法及び装置 - Google Patents
マルチ受信アンテナシステムにおけるチャネル推定方法及び装置 Download PDFInfo
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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
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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
- H04L25/022—Channel estimation of frequency response
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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
- H04L25/0224—Channel estimation using sounding signals
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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
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
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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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
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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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/025—Channel estimation channel estimation algorithms using least-mean-square [LMS] method
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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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0256—Channel estimation using minimum mean square error criteria
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- 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
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- 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
- H04L27/2649—Demodulators
- H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
- H04L27/26526—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
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Abstract
Description
最小二乗法(LS)チャネル推定:LSチャネル推定は、OFDMシステムにおける最も基本的で、最も簡単なチャネル推定方法である。当該方法によると、パイロットサブ搬送波位置の受信信号を直接にパイロット信号の逆と掛け算してチャネルの推定値とし、LSチャネル推定もその他の更に複雑なチャネル推定技術の基礎ステップである。LSチャネル推定は演算複雑度が一番低いが、当該方法において雑音及びアンテナ間の干渉による推定性能の悪化を完全に考慮していなく、当該方法を用いるとシステムの性能に厳重な影響を与えることになる。
本発明の実施例は周波数ドメイン符号分割多重化案内配置場合のマルチアンテナのチャネル推定に応用でき、チャネル統計情報が把握できていない状況においても、できる限りLMMSE技術に接近する性能が得られ、且つステップが簡単である。本発明の実施例に提供されるPLMMSEチャネル推定は、DFT−Basedチャネル推定アルゴリズムに比べ、その性能が約1.5db向上される。
図1は、本発明の実施例の典型的な送信機の構造を示す図で、SC−FDMAに基づく送信アンテナ2受信アンテナ2のV−BLASTシステムベースバンドモデルにおいて、ユーザデータはモジュール1による直並列変換を経てから二つのパスに分けられてモジュール2による変調を経て、その後、モジュール3によって周波数ドメインにDFT(600点FFT変換を用いることができる)変換され、周波数ドメインにおいてモジュール5を用いて連合してパイロットを挿入する。周波数ドメインのシンボルとパイロットシンボルはサブ搬送波によるマッピングを経て他のユーザとの周波数分割多重化を実現し、また、モジュール6によってタイムドメインにIFFT(1024点IFFT変換)変換され、最後に、モジュール7においてCP(通常のCP又は非通常のCP)が付加された後、モジュール8によって周波数変換されてから送信される。
受信したパイロットシンボルに、ダウンコンバート、A/D、CPの除去、N点FFTの処理を行って逆多重化して
420 重み値演算モジュール
430 推定補正モジュール
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CN201210294420.6 | 2012-08-17 | ||
CN201210294420.6A CN103595664B (zh) | 2012-08-17 | 2012-08-17 | 一种多接收天线系统中信道估计方法和装置 |
PCT/CN2013/081683 WO2014026650A1 (zh) | 2012-08-17 | 2013-08-16 | 一种多接收天线系统中信道估计方法和装置 |
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JP2015532036A true JP2015532036A (ja) | 2015-11-05 |
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US (1) | US9231788B2 (ja) |
EP (1) | EP2887597A4 (ja) |
JP (1) | JP6231565B2 (ja) |
CN (1) | CN103595664B (ja) |
WO (1) | WO2014026650A1 (ja) |
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CN103987062B (zh) * | 2014-04-16 | 2017-06-27 | 华为技术有限公司 | 接收信号的干扰消除方法和装置 |
US10638479B2 (en) * | 2015-11-17 | 2020-04-28 | Futurewei Technologies, Inc. | System and method for multi-source channel estimation |
EP3391601B8 (en) * | 2015-12-18 | 2021-01-20 | Apple Inc. | Communication terminal and method for channel estimation |
CN106487463B (zh) * | 2016-11-29 | 2019-02-15 | 北京邮电大学 | 多输入多输出信号检测结果处理方法及装置 |
US10305555B2 (en) * | 2017-10-20 | 2019-05-28 | Micron Technology, Inc. | Autocorrelation and memory allocation for wireless communication |
WO2019233581A1 (en) | 2018-06-07 | 2019-12-12 | Intel IP Corporation | Method, software and device for generating channel estimates |
CN108881077A (zh) * | 2018-07-03 | 2018-11-23 | 重庆大学 | 一种基于叠加导频的维纳滤波信道估计方法 |
CN110858796A (zh) * | 2018-08-23 | 2020-03-03 | 普天信息技术有限公司 | 一种物理上行共享信道导频信号的生成方法 |
CN109831396B (zh) * | 2019-03-07 | 2021-05-18 | 西安电子科技大学 | 短突发mimo通信系统的半盲信道估计方法 |
CN111555856B (zh) * | 2020-04-22 | 2022-05-06 | 中国电子科技集团公司第五十四研究所 | 一种基于多路差分加权相关的导引辅助同步方法 |
CN111988076B (zh) * | 2020-07-10 | 2021-05-07 | 中国人民解放军战略支援部队航天工程大学 | 一种基于最大相关信噪比准则的天线分组及修正方法 |
US11223402B1 (en) | 2020-08-07 | 2022-01-11 | Facebook, Inc. | Assisted channel approximation for wireless communication of a supercell base station |
CN112202693B (zh) * | 2020-09-03 | 2021-09-28 | 中国科学院上海微系统与信息技术研究所 | 一种适用于ofdm系统的抗干扰频偏估计方法 |
CN112217761B (zh) * | 2020-09-21 | 2021-09-28 | 中国科学院上海微系统与信息技术研究所 | 一种适用于ofdm系统的抗干扰帧头解调方法 |
CN112134816B (zh) * | 2020-09-27 | 2022-06-10 | 杭州电子科技大学 | 一种基于智能反射表面的elm-ls联合信道估计方法 |
CN114338294B (zh) * | 2020-12-21 | 2023-06-09 | 重庆邮电大学 | 一种超大规模多天线系统中低复杂度的信道估计方法 |
CN112887231B (zh) * | 2021-01-13 | 2022-09-09 | 深圳市极致汇仪科技有限公司 | 一种mimo信道估计的改进方法和系统 |
CN114124624B (zh) * | 2021-11-19 | 2023-11-17 | 成都爱瑞无线科技有限公司 | 一种基于导频的信道估计方法及系统 |
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US20150236872A1 (en) | 2015-08-20 |
JP6231565B2 (ja) | 2017-11-15 |
EP2887597A1 (en) | 2015-06-24 |
CN103595664B (zh) | 2016-12-07 |
US9231788B2 (en) | 2016-01-05 |
CN103595664A (zh) | 2014-02-19 |
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