MIMO-OFDM Precoding Technique for Minimizing BER Upper Bound of MLD
نویسندگان
چکیده
منابع مشابه
MIMO-OFDM Precoding Technique for Minimizing BER Upper Bound of MLD
This paper proposes a new MIMO-OFDM precoding technique that aims to minimize a bit error rate (BER) upper bound of the maximum likelihood detection (MLD) in mobile radio communications. Using a steepest descent algorithm, the proposed method estimates linear precoding matrices that can minimize the upper bound of BER under power constraints. Since the upper bound is derived from all the pairwi...
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Broadband multiple-input multipleoutput (MIMO) communication systems using spatial multiplexing are facing multi-stream interference (MSI) from the transmit antennas and intersymbol interference (ISI) due to the time-dispersive nature of the channel. Appropriate detection requires the minimization of both sources of interference, usually at the receiver. Orthogonal frequency division multiplexi...
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あらまし マルチ送受信アンテナ(MIMO)空間多重を用いる直交周波数分割多重(OFDM)伝送の信号分離法とし て,QR 分解と M アルゴリズムを用いる演算量削減型最尤検出(QRM-MLD)が MLD に近い誤り率特性を達成するこ とが知られている.筆者らは以前,シングルキャリア(SC)伝送を対象に最小平均二乗誤差規範に基づく周波数領域 等化(MMSE-FDE)出力より事後確率を計算してシンボル候補を絞り込むことで演算量を削減する,2 ステップ QRM-MLブロック信号検出(QRM-MLBD)を提案した.2ステップQRM-MLD は SC伝送だけではなく,MIMO-OFDM 伝送にも適用できる.本稿では,MMSE 規範に基づく線形検出(MMSED)を第 1 ステップに用いる 2 ステップ QRM-MLD を MIMO-OFDM 伝送に適用する.QRM-MLD においては送信信号の検出...
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ژورنال
عنوان ژورنال: IEICE Transactions on Communications
سال: 2008
ISSN: 0916-8516,1745-1345
DOI: 10.1093/ietcom/e91-b.7.2287