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X信道中一种新的空时编码传输方案 被引量：3

New space-time coded transmission scheme for the X channel
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摘要 针对每个用户均配置四根天线的X信道,提出了一种新的空时编码传输方案.每个用户采用速率为2的空时分组码(R2-STBC),首先对编码矩阵进行预编码,然后将预编码后的编码矩阵进行加减组合后分两次发送.通过对接收信号进行加减操作减少相互干扰的编码矩阵的数量,再通过合理地设计预编码以及接收端的线性处理消除多用户干扰.与已有方案相比,所提方案在保持传输效率不变的情况下,不仅极大地减少了反馈信息,而且性能显著优于相同场景中的已有方案. A new space-time coded transmission scheme is proposed for the X channel with four antennas at each user who employs the rate-2 space-time block code.Each codeword is pre-coded,and then the addition and subtraction combinations of each codeword after pre-coding are transmitted separately.The number of interferential coding matrices is reduced through addition and subtraction operations of the received signals,and then the multi-user interference is eliminated by proper pre-coding at the transmitters and linear processing at the receivers.Compared with the existing scheme,the proposed scheme not only greatly reduces the feedback amount,but also significantly improves the system reliability.
作者 田心记 逯静
机构地区 河南理工大学计算机科学与技术学院
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2014年第4期116-122,共7页 Journal of Xidian University
基金 国家自然科学基金资助项目(51174263 61202286)
关键词 X信道 空时分组码 预编码 多用户干扰 反馈量 X channel space-time block code pre-coding multi-user interference feedback amount
分类号 TN919.2 [电子电信—通信与信息系统]
  • 相关文献

参考文献14

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二级参考文献8

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共引文献2

同被引文献27

  • 1Wang Jiuteng. Maximum-minimum throughput for MIMO systems in cognitive radio networks [J]. IEEE Transactions on Vehicular Technology, 2014, 63(1): 217-224.
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  • 6Rabiei P, A1-Dhahir N, Calderbank R. New rate-2 STBC design for 2 TX with reduced-complexity maximum likeli- hood decoding [ J]. IEEE Transactions on Wireless Communications, 2009, 8(4) : 1803-1813.
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  • 10Li Feng, Jafarkhani H. Space-time processing for X channels using precoders [ J ]. IEEE Transactions on Signal Processing, 2012, 60(4) : 1849-1861.

引证文献3

二级引证文献1

西安电子科技大学学报
2014年 第4期

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