Performance of Orthogonal Space-Time Block Codes in Keyhole MIMO Fading Channels

ZHAO Hong-zhi; YI Gong; TANG You-xi

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Performance of Orthogonal Space-Time Block Codes in Keyhole MIMO Fading Channels

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- Performance of Orthogonal Space-Time Block Codes in Keyhole MIMO Fading Channels
- Acta Electronica Sinica Vol. 35, Issue 6A, Pages: 30-34(2007)
- 作者机构：
  
  电子科技大学通信抗干扰技术国家级重点实验室,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911
- Published：2007
- 稿件说明：
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ZHAO Hong-zhi, YI Gong, TANG You-xi. Performance of Orthogonal Space-Time Block Codes in Keyhole MIMO Fading Channels[J]. Acta Electronica Sinica, 2007, 35(6A): 30-34.
DOI：

ZHAO Hong-zhi, YI Gong, TANG You-xi. Performance of Orthogonal Space-Time Block Codes in Keyhole MIMO Fading Channels[J]. Acta Electronica Sinica, 2007, 35(6A): 30-34. DOI：

摘要

在某些加MIMO(multiple-input multiple-output)衰落环境下

发射或者接收信号不相关

但是系统的信道容量依然很低

这种现象称之为Keyhole效应.本文针对Keyhole衰落加MIMO信道

在任意的收发天线数目下

对正交空时分组码进行了性能分析

通过矩生成函数的分析方法

分析了Keyhole信道可以提供的分集增益

给出严格的封闭的符号错误概率表达式.并且针对收发天线数目不相等的情况

给出简洁的近似结果.在Keyhole衰落信道下的计算机仿真表明

严格的分析结果与仿真结果一致

在高信噪比下

近似表达式也与仿真的结果吻合.

Abstract

In some multiple-input multiple-output(MIMO)fading environments

the MIMO channel capacity can become very low even for uncorrelated signals; this effect has been tend keyhole or pinhole.Tn this paper

we present the close-form error probabilities of space time block codes(STBC) for arbitrary number of transmit and receive antennas with M-QAM modulation in Keyhole MIMO fading channels.Using a rrtoment-gertecation-function-based(MGF-based) analysis approach

we provide the rigorous closed-form results of symbol error probability(SEP).wth different number of transmit and receive antennas

the approximate expressioms is presented at medium and high SNR regime.Finally

simulation results are also provided to verify our analytical results.

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