摘要
将信道编译码中性能较优的LDPC码运用到网络编码和信道编码联合设计,提出一种接收端补偿校正的网络编码和信道编码联合设计方案,该方案在中继节点进行解调和译码后硬判决,以降低中继节点处理数据的复杂性,然后进行网络编码而不考虑编码数据中存在的误码,通过接收节点对中继硬判决信息的错误概率进行补偿和校正来获取最大似然接收。仿真实验表明,提出的网络编码和信道编码联合设计方案不但降低了中继节点处理数据的复杂性,同时提高了传输系统的可靠性。
In this paper, the optimum channel coding performance LDPC codec is applied to joint network-channel coding and a joint network-channel coding scheme is proposed which compensation and correction in the received nodes in the two-way relay channels. The scheme uses received data that have demodulated and decoded to realize network coding, without considering network coding errors, to reduce the complexity of the relay node data processing, compensation and eorrection hard decision error probability information at the received node to obtain maximum likelihood. The simulation confirms that the joint network-channel coding method can improve the bit error rate performance.
出处
《电视技术》
北大核心
2015年第1期81-84,共4页
Video Engineering
基金
国家"973"计划项目(2013CB329005)
国家科技重大专项(2012ZX03001008-003
2011ZX03005-004-03)
江苏省"973"计划项目(BK2011027)
