Performance Analysis of MQAM with Combined Transmit SC/Receive MRC in Rayleigh Fading Channels

LI Guang-qiu; CAO Xiao-bo

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Performance Analysis of MQAM with Combined Transmit SC/Receive MRC in Rayleigh Fading Channels

更新时间：2025-07-16

- Performance Analysis of MQAM with Combined Transmit SC/Receive MRC in Rayleigh Fading Channels
- Acta Electronica Sinica Vol. 31, Issue 7, Pages: 1080-1082(2003)
- 作者机构：
  
  杭州电子工业学院通信工程分院,浙江,杭州,310037
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.3
- Published：2003
- 稿件说明：
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LI Guang-qiu, CAO Xiao-bo. Performance Analysis of MQAM with Combined Transmit SC/Receive MRC in Rayleigh Fading Channels[J]. Acta Electronica Sinica, 2003, 31(7): 1080-1082.
DOI：

LI Guang-qiu, CAO Xiao-bo. Performance Analysis of MQAM with Combined Transmit SC/Receive MRC in Rayleigh Fading Channels[J]. Acta Electronica Sinica, 2003, 31(7): 1080-1082. DOI：

摘要

日益增长的无线业务需求要求提高衰落信道上无线通信的频谱利用率.本文研究一种使用组合发射机SC/接收机MRC(SC/MRC)的MQAM方案

推导其在平坦瑞利衰落信道上的误符号率

分析无线信道时变特性对系统性能的影响.数值计算结果表明该组合空间分集方案可以通过调整发射天线和接收天线的数目来获得比传统接收机分集接收更大的分集增益.

Abstract

The growing demand for wireless services has created the need for improving the spectral efficiency of wireless communications over fading channels.M-ary multilevel quadrature amplitude modulation(MQAM) in conjunction with transmit antenna selection combined with receive maximum-ratio combining is investigated in this paper.Based on alternative representations of Q(x)

the average symbol error rate of this combined spatial diversity scheme over flat Rayleigh fading channels is derived

and the effects of the time-varying nature of the wireless channels on its performance are analyzed.Numerical results show that the scheme can achieve significant diversity gain over traditional receive diversity schemes by distributing the antennas over transmit and receive side.

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