一种新型自适应网络编码协作方案  

A New Adaptive Network Coded Cooperation Strategy

作　　者：潘博[1] 周武旸[1] 

机构地区：[1]中国科学技术大学无线网络通信实验室,安徽合肥230027

出　　处：《通信技术》2010年第3期102-104,108,共4页Communications Technology

摘　　要：自适应网络编码协作技术,将网络编码和跨层设计的概念引入到了用户协作中来,在利用低密度奇偶校验码的编码结构的基础上,改善了无线通信系统的性能。从低密度奇偶校验码的校验矩阵结构出发,通过充分利用中继过程中各个用户得到的信息,改良了接收端所形成的等效编码校验矩阵的结构,提出了一种新型自适应网络编码协作方案。其性能分析和仿真结果表明,在基本不提高系统开销的前提下,该方法实现了性能的进一步提升。In the adaptive network coded cooperation strategy the concepts of network coding and cross-layer design is introduced into the user cooperation,and the network topology is mapped to the coding structure of LDPC （low-density parity-check） codes,thus achieving performance improvement in large wireless relay network.In this paper,the structure of LDPC codes in the original strategy is analyzed.Based on this,a new adaptive network coded cooperation strategy is proposed,which overcomes the deficiency in the original strategy by taking full advantage of information from various users.Performance analysis and simulation results show that,as compared with the original strategy,this new strategy has achieved greater performance improvement without any additional system consumption.

关 键 词：自适应网络编码协作 用户协作 低密度奇偶校验码 网络编码 

分 类 号：TP842[自动化与计算机技术—检测技术与自动化装置]