卫星ATM网络应用RS和Turbo级联码的仿真分析  

Simulation Analysis of Applying Concatenated RS and Turbo Code to Satellite ATM

作　　者：张克[1] 周晓正[1] 徐熙宗 彭澎[1] 

机构地区：[1]北京石油化工学院通信工程系,北京102617 [2]韩国丽水大学电子通信工学科,韩国550749

出　　处：《北京石油化工学院学报》2005年第4期45-49,共5页Journal of Beijing Institute of Petrochemical Technology

摘　　要：为适应卫星ATM传输提出了RS(Reed Solomon)码和Turbo码的级联码。RS码 是线性分组码中纠突发错误能力最强、效率最高的编码,广泛地被卫星通信信道采用;而Turbo码是新 近提出的,可以接近香农限的卓越编码方案,它使用2个反馈递归系统卷积(Recursive Systematic Conv- olutional,RSC)码组成的码;校验位删减成要求的码率。卫星ATM的标准[TIA/EIA/IS-787]中规定, 前向纠错码(Forward Error Correction,FEC)采用动态和适当的RS编码。用RS和Turbo级联码代替 了RS码。仿真结果表明,RS和Turbo级联码的性能比同样码率的RS和Convolutional的级联码在一 定信噪比下有大约1 dB的增益。In this paper, the concatenated the satellite ATM transmission.The RS highest efficiency in linear block codes for RS （Reed Solomon） and Turbo coding is proposed for code has the strongest error-correcting ability and the correcting burst error, and has been widely used in satellite communication channel. The Turbo code proposed recently is the most excellent coding scheme which can be near the Shannon＇ limit. It uses 2 recursive systematic convolutional （RSC） code as the constituent codes and parity bit are punctured to get the desired code rate. The interim standard [TIA/EIA/IS--787] of the satellite ATM for forward error correction （FEC） adopts a method of dynamic and adaptive RS coding. This paper replaces the adaptive RS code with the concatenated RS code and Turbo code for forward error correction. It is shown by simulation that the concatenated RS code and Turbo code obtains＂ about 1 dB gain in signal to noise ratio over the concatenated RS code and Convolutional code with the same code rate for satellite AIM transmission.

关 键 词：异步传输模式(ATM) 里德一索罗门(RS)码 Turbo码 前向纠错(FEC) 级联码 

分 类 号：TN914.4[电子电信—通信与信息系统]