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Improved space-time processing for X channel using precoders 被引量：1

Improved space-time processing for X channel using precoders
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摘要 The article investigates how to send perfect space-time codes with low feedback amount and symbol-by-symbol decoding for X channel using precoders. It is assumed that two users are introduced with two antennas and two receivers. Each user employs a rate-2 space-time block code and follows certain rule when sending codewords. The multi-user interference is eliminated by pre-coding at the transmitter and linear processing at the receiver. Compared with the existing scheme for the same scene, the proposed scheme greatly reduces feedback amount and improves the transmission efficiency, while keeping the same decoding complexity. Simulations demonstrate the validity of the proposed scheme. The article investigates how to send perfect space-time codes with low feedback amount and symbol-by-symbol decoding for X channel using precoders. It is assumed that two users are introduced with two antennas and two receivers. Each user employs a rate-2 space-time block code and follows certain rule when sending codewords. The multi-user interference is eliminated by pre-coding at the transmitter and linear processing at the receiver. Compared with the existing scheme for the same scene, the proposed scheme greatly reduces feedback amount and improves the transmission efficiency, while keeping the same decoding complexity. Simulations demonstrate the validity of the proposed scheme.
作者 TIAN Xin-ji LI Ya
机构地区 School of Computer Science and Technology
出处 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2014年第5期31-36,共6页 中国邮电高校学报（英文版）
基金 supported by the National Natural Science Foundation of China (51174263) the Natural Science Foundation of Henan (132300410461)
关键词 X channel space-time code pre-coding multi-user interference feedback amount transmission efficiency X channel, space-time code, pre-coding, multi-user interference, feedback amount, transmission efficiency
分类号 TN919.3 [电子电信—通信与信息系统]
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参考文献15

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同被引文献15

  • 1PAULRAJA,NABARR,GORED.空时无线通信导论[M].北京:清华大学出版社,2005:41.
  • 2Kan Haibin,Shen Hong. A Counterexample for the Open Problem on the Minimal Delay of Orthogonal Designs with Maximal Rates [J]. IEEE Transactions on Infor- mation Theory ,2005,51 ( 1 ) :355-359.
  • 3Kan Haibin, Shen Hong. Lower Bounds of the Minimal Delays of Complex Orthogonal Designs with Maximal Rates [ J ]. IEEE Transactions on Communications,2006, 54(3) :383-388.
  • 4Li Yuan, Kan Haibin. Complex Orthogonal Designs with Forbidden $ 2 \ times 2 $ Submatrices [ J ]. IEEE Tran- sactions on Information Theory, 2012, 58 ( 7 ) : 4825- 4836.
  • 5Liu Xiaodong,Li Yuan, Kan Haibin. On the Minimum Decoding Delay of Balanced Complex Orthogonal Designs[J]. IEEE Transactions on Information Theory, 2015,61 ( 1 ) :696-699.
  • 6Xie Baile, Li Yang, Minn H, et al. Adaptive Interference Alignment with CSI Uncertainty [ J ]. IEEE Transactions on Communications ,2013,61 ( 2 ) :792-801.
  • 7Chen Xiang, Song S H, Letaief K B. Interference Alignment in Dual-hop MIMO Interference Channel[J]. IEEE Transactions on Wireless Communications,2014, 13(3) :1274-1283.
  • 8Tian Xinji, Li Ya. An Interference Cancellation Method Based on Space-time Code over X Channel[ J ]. Journal of Computational Information Systems, 2014,10 ( 24 ) : 1-8.
  • 9Lee N, Heath R W. Space-time Interference Alignment and Degree-of-freedom Regions for MISO Broadcast Channel with Periodic CSI Feedback [J]. IEEE Transac- tions on Information Theory ,2014,60( 1 ):515-528.
  • 10Shi Long,Zhang Wei, Xia Xianggen. Space-time Block Code Designs for Two-user MIMO X Channels [J ]. IEEE Transactions on Communications, 2013,61 ( 9 ) : 3806-3815.

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The Journal of China Universities of Posts and Telecommunications
2014年 第5期

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