摘要
在实用网络编码系统的基础上,通过在编码端对分组数据包的编码向量引入三种保护策略:循环冗余校验、空时分组码以及根据不同的信噪比在两种保护方法之间切换,来提高和平稳通信质量。仿真结果表明:这三种机制,都可以有效提高实用网络编码系统中的通信质量。而采用保护模式切换的方案可以在大量减少重传次数的基础上消除通信质量不稳定的问题。
Three different encoding strategies are proposed to protect the coding vectors in practical network coding system,including the introductions of cyclical redundancy check and space-time block coding into the coding vectors,and the exchange between these two modes in accordance with the different signal-noise ratios.The simulation results indicate that these three strategies could effectively promote the transmission quality.And the exchange mode could solve the problem of unstable transmission at great reduction of retransmission times.
出处
《通信技术》
2010年第3期105-108,共4页
Communications Technology
基金
国家自然科学基金项目--部份修正PLS算法及多项式预失真技术研究(批准号:60871046)
