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Efficient Hybrid DFE Algorithms in Spatial Multiplexing Systems

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タイトル: Efficient Hybrid DFE Algorithms in Spatial Multiplexing Systems
著者: Jiang, Wenjie 著作を一覧する
Asai, Yusuke 著作を一覧する
Aikawa, Satoru 著作を一覧する
Ogawa, Yasutaka 著作を一覧する
キーワード: complexity reduction
spatial multiplexing
signal detection
発行日: 2009年 2月 1日
出版者: IEICE - The Institute of Electronics, Information and Communication Engineers
誌名: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
巻: E92-A
号: 2
開始ページ: 535
終了ページ: 546
出版社 DOI: 10.1587/transfun.E92.A.535
抄録: The wireless systems that establish multiple input multiple output (MIMO) channels through multiple antennas at both ends of the communication link, have been proved to have tremendous potential to linearly lift the capacity of conventional scalar channel. In this paper, we present two efficient decision feedback equalization algorithms that achieve optimal and suboptimal detection order in MIMO spatial multiplexing systems. The new algorithms combine the recursive matrix inversion and ordered QR decomposition approaches, which are developed for nulling cancellation interaface Bell Labs layered space time (BLAST) and back substitution interface BLAST. As a result, new algorithms achieve total reduced complexities in frame based transmission with various payload lengths compared with the earlier methods. In addition, they enable shorter detection delay by carrying out a fast hybrid preprocessing. Moreover, the operation precision insensitivity of order optimization greatly relaxes the word length of matrix inversion, which is the most computational intensive part within the MIMO detection task.
Rights: Copyright©2009 The Institute of Electronics, Information and Communication Engineers
Relation (URI):
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 小川 恭孝


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