摘要
比较AWGN信道与瑞利信道的误码性能,研究瑞利信道下分集支数与信息传输可靠性之间的关系。推导线性分组码在瑞利信道下误码率上界的理论表达式,得到分集增益与其最小汉明距离的关系。基于蒙特卡洛法对误码性能进行仿真,并与理论误码率上界进行比较,结果表明线性分组码在瑞利信道下获得的分集增益等于其最小码距。
The error performance of Additive White Gaussian Noise（AWGN） channel and Rayleigh fading channel is analyzed.Then the relation between diversity gain and communicating reliability over Rayleigh fading channel is studied.A formula of code error probability upper bound is derived for wireless communication system in which linear block code is applied.It shows the relation between diversity gain of linear block code through Rayleigh channel and its minimum hamming distance.Based on Monte Carlo method,the simulation is carried on this problem.A comparative analysis is made on the experimental and theoretical result,and results show that the diversity gain of linear block code under relay fading channel is equivalent to its minimum hamming distance.
出处
《计算机工程》
CAS
CSCD
2012年第7期90-92,共3页
Computer Engineering
关键词
加性高斯白噪声
瑞利信道
多径
分集增益
线性分组码
蒙特卡洛法
Additive White Gaussian Noise（AWGN）
Rayleigh channel
multipath
diversity gain
linear block code
Monte Carlo method
