摘要
该文根据两个统计独立非负随机变量的调和平均值的概率密度函数在零点的变化特性,分析了选择性放大传送协同协议在Nakagami衰落信道中的性能,得出了高信噪比时系统误符号率的闭合表达式。理论分析和数值仿真结果表明,在Nakagami信道中选择性放大传送协同协议可获得和传统放大传送协同协议一样的分集阶数,并且具有更优的误符号率性能。
The behavior of the probability density function of the harmonic mean of two independent distributed non-negative random variables at the origin is analyzed. This result is then applied to study the performance of selection amplify-and-forward cooperation protocol in Nakagami fading channel and closed-form expression of the Symbol Error Rate (SER) in high SNR region is also provided. Both analytical and numeric results show that the selection amplify-and-forward cooperation protocol maintains the same diversity order as the conventional amplify-and-forward protocol, and has better SER performance.
出处
《电子与信息学报》
EI
CSCD
北大核心
2009年第2期414-417,共4页
Journal of Electronics & Information Technology
关键词
协同通信
选择性放大传送
调和平均
误符号率
Cooperative communication
Selection amplify-and-forward
Harmonic mean
Symbol Error Rate(SER)
作者简介
男,1982年生,博士生,研究方向为多址接入、协同通信.
男,1982年生,博士生,研究方向为无线传感器网络.
男,1940年生,教授,博士生导师,主要从事移动通信、智能天线等研究.