摘要
网络编码技术在无线通信系统中的应用能够显著的提高通信系统的干扰性从而降低误码率并且提高数据传输率。主要研究了两个用户、两个中继、一个基站组成的无线通信系统,当两个用户同时输出相互独立的信息时,基站的最优解码方案。首先分析了在基站采用独立硬判决解码和联合软判决解码两种解码方案,然后通过数据仿真方法比较了采用两种解码方案时基站接收误码率,最后在理论上推导出联合软判决解码方案的误码率边界曲线并得到最优化的解码方案。
The application of Network coding in wireless communication system could significantly enhance the robustness of the communication system,reduce the symbol error rate,and thus raise the transmission rate.This paper mainly discusses the wireless communication system composed of two users,two relays and one base-station,describes the optimal decoding for this system when the two users transmit statistically independent information to the same base-station.Firstly,this paper analyzes two decoding schemes separately in hard-decision decoding and joint soft-decision decoding,then it compares and evaluates the symbol error rates of these two decoders via the simulation on these symbol error rates at the base-station,and finally it derives theoretically the bound curve of the symbol error rate for the joint soft-decision decoding scheme,and thus concludes the optimal decoding solution.
出处
《通信技术》
2012年第8期50-52,55,共4页
Communications Technology
关键词
无线通信
网络编码
解码
有限域
最大似然
wireless communication
network coding
decoding
finite field
maximum likelihood
