Time-Reversal Orthogonal Space-Time Block Coding Design for Frequency-Selective Fading Channels

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Time-Reversal Orthogonal Space-Time Block Coding Design for Frequency-Selective Fading Channels

更新时间：2025-07-09

- Time-Reversal Orthogonal Space-Time Block Coding Design for Frequency-Selective Fading Channels
- Vol. 43, Issue 8, Pages: 53-58(2009)
- 作者机构：
  
  北京邮电大学泛网无线通信教育部重点实验室,北京,100876
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.22
- Online First：10 August 2009，
  
  Published：2009
- 稿件说明：
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Time-Reversal Orthogonal Space-Time Block Coding Design for Frequency-Selective Fading Channels[J]. 2009, 43(8): 53-58.
DOI：

Time-Reversal Orthogonal Space-Time Block Coding Design for Frequency-Selective Fading Channels[J]. 2009, 43(8): 53-58. DOI：

摘要

针对空时分组码在频率选择性衰落信道中误码率性能损失严重的问题

提出了一种时间反转坐标交织正交码设计方案(TR-CIOD).先将空时码的部分传输数据进行时间反转

按照特定数据格式改变符号时序进行传输

然后利用正交空时分组码等效信道矩阵的正交性和循环矩阵的乘法特性

在接收端进行空时匹配滤波.TR-CIOD方案能够降低符号间干扰对数据传输的影响

在保证获得空时码多天线分集增益的同时

还能有效合并信道多径

获得多径分集增益.仿真结果表明

在2径信道、误码率为10

-5

时

TR-CIOD方案比平坦信道中的坐标交织正交码设计方案的信噪比增益提高了5.5 dB.

Abstract

Focusing on the problem that the bit error rate performance of the space-time block codes decreases in frequency-selective fading channels

a time-reversal coordinate interleaved orthogonal coding design(TR-CIOD)is proposed. Data symbols are transmitted in designed format and some of the symbols are time-reversed. It is the orthogonality of the equivalent channel matrix and the multiplication property of the circulant matrix that the influence on performance caused by intersymbol interference is greatly reduced after matching filters at receivers. TR-CIOD can achieve multi-antenna diversity gain as well as multi-path diversity gain. Simulation results with 10

-5

bit error rate and 2-ray channels and comparisons with the coordinate interleaved orthogonal design in frequency flat channel show that TR-CIOD performs obviously better

and achieves about 5.5 dB SNR gain.

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Keywords

references

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