摘要
速率控制技术是合作超宽带系统的关键技术之一,针对DF合作的MB-OFDM超宽带系统,提出了一种用RCP-LDPC码进行速率控制的算法,通过对变量节点进行分组和组内甄选两步构造了适合该系统的RCP-LDPC码。计算机仿真结果表明,该编码方案能灵活实现速率控制,而且比随机打孔的编码方案性能更优。
Rate control technology is one of the key technologies of the cooperative UWB system.An algorithm of rate control using RCP-LDPC code in DF MB-OFDM UWB systems is proposed,which comprised of grouping and selecting,and a suitable RCP-LDPC code is constructed.Simulation results show that the proposed encoding scheme is very flexible in cooperative UWB system and the performance is better than the random puncture scheme.
出处
《电信科学》
北大核心
2010年第S2期216-220,共5页
Telecommunications Science
基金
浙江省教育厅科研项目(No.Y200907111)
