基于非规则LDPC码的次外循环迭代BR-BICM系统  

Sub-Outer Iterative BR-BICM System Based on Irregular LDPC Codes

作　　者：陈其先[1] 程云鹏[2] 沈良[2] 

机构地区：[1]解放军理工大学通信工程学院研究生1队,江苏南京210007 [2]解放军理工大学通信工程学院无线通信系,江苏南京210007

出　　处：《军事通信技术》2009年第3期18-22,共5页Journal of Military Communications Technology

摘　　要：传统的基于LDPC码的BICM系统没有充分利用编码和调制的联合增益。为了提高系统性能并获得系统复杂度相对简单的BICM系统,提出了基于非规则LDPC码的次外循环迭代BR-BICM系统结构。利用映射位置的受保护程度不同以及编码调制的联合增益提高了系统的性能,仿真结果验证了系统设计的正确性。The traditional Bit Interleave Coded Modulation(BICM) system based on LDPC codes cannot obtain the combined gain between coding and modulating.To improve the performance and simplify the BICM system,the sub-outer iterative BR-BICM system based on irregular LDPC codes was proposed.The system performance can be improved largely by utilizing the degree of protection mapping to different positions and the combined gain between coding and modulating.Simulation results confirm the correction of this system design...

关 键 词：非规则低密度奇偶校验码 比特交织编码调制 比特可靠性映射 次外循环迭代 

分 类 号：TN911.22[电子电信—通信与信息系统]