Complexity Reduction of Higher Order MIMO Decoder Using Group Detection
نویسندگان
چکیده
منابع مشابه
Complexity Reduction of MIMO Decoder
-The data rates and the supported range in communication systems, can be increased using MIMO (Multiple input and multiple output) technique. MIMO technique uses multiple antennas at both transmitter and receiver. MIMO systems uses Orthogonal frequency division multiplexing (OFDM) technique for multicarrier modulation. QR decomposition (QRD) is the first step in the decoding of the MIMO receive...
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In digital communication systems, Maximum likelihood (ML) detection is the optimum method to decode a received signal vector. In wireless communication systems, the complexity increases with the constellation size and the number of antennas. It becomes infeasible to apply ML decoding to the practical systems as it searches through all the lattice points in the constellation. Sphere decoding is ...
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Recently, lattice-reduction-aided detectors have been proposed for multiple-input multiple-output (MIMO) systems to give performance with full diversity like maximum likelihood receiver, and yet with complexity similar to linear receivers. However, these lattice-reduction-aided detectors are based on the traditional LLL reduction algorithm that was originally introduced for reducing real lattic...
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あらまし 周波数領域送信フィルタを用いるシングルキャリア(SC)伝送は,低ピーク対平均電力比(PAPR)を実現し つつ大きな周波数ダイバーシチ利得を得ることができる.筆者らは以前,周波数領域フィルタを用いる SC-周波数分 割多元接続(SC-FDMA) マルチ送受信アンテナ(MIMO)におけるジョイント繰り返し最小平均二乗誤差(MMSE)検出・ 干渉キャンセラを提案した.しかしながら,MMSE 重み算出に非常に大きな演算量が必要であった.本稿では,Type I ハイブリッド自動再送要求(HARQ)を用いるパケット伝送を対象に,等価 MIMO チャネル行列がブロック対角行列で 表せることに着目し,MMSE 重み算出に必要な演算量を低減した MMSE 検出・干渉キャンセラを提案する.計算機 シミュレーションにより,ロールオフファクタα=1 の場合にスループットを最大にできることを示す. ...
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The sphere decoder (SD) is an attractive low-complexity alternative to maximum likelihood (ML) detection in a variety of communication systems. It is also employed in multiple-input multiple-output (MIMO) systems where the computational complexity of the optimum detector grows exponentially with the number of transmit antennas. We propose an enhanced version of the SD based on an additional cos...
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ژورنال
عنوان ژورنال: Journal of Signal Processing
سال: 2016
ISSN: 1342-6230,1880-1013
DOI: 10.2299/jsp.20.21