信息与电子工程2011，Vol.9Issue(5)：531-536,6.
基于卷积码的网络编码协助IDMA系统容量分析
Capacity analysis of a convolutional code-based network coding assisted IDMA system
摘要
Abstract
This paper designs a network-coded non-orthogonal multi-access user cooperative system, and convolutional code is employed to transfer messages. The source users' messages obtained in the relay where they get correctly decoded are XOR together and re-transmitted forward to the destination to obtain diversity gain. In the receiver, a dual iterative multi-user detection scheme is developed and the receiver architecture is redesigned. Besides, a novel performance evaluation technique for the chip-by-chip algorithm called SNR evolution technique is investigated to analyze the system capacity. Simulation results confirm that the proposed network-coded cooperation Interleave-Division Multiple-Access(IDMA) scheme based on convolutional code is an effective way to combat channel fading. It can provide obvious cooperation diversity gain and achieve noticeable Bit Error Rate (BER) improvement, and has a high system capacity.关键词
非正交用户合作/卷积码/网络编码/迭代多用户检测Key words
non-orthogonal user cooperation/ convolutional code/ network coding/ iterative multi-user detection分类
电子信息工程引用本文复制引用
张成磊,周小林,方朝曦..基于卷积码的网络编码协助IDMA系统容量分析[J].信息与电子工程,2011,9(5):531-536,6.基金项目
国家自然科学基金项目(60802011,60902007) （60802011,60902007）
国家科技重大专项“新一代宽带无线移动通信网”基金项目(2009ZX03002-003) （2009ZX03002-003）
浙江省自然科学基金项目(Y1101123) （Y1101123）
宁波市自然科学基金项目(2010A610173) （2010A610173）
