浅海水声通信中纠错编码的应用  

Application of error correct coding in underwater communication system

作　　者：刘磊[1,2] 冀邦杰[1,2] 岳玲[1] 淦华东[1,2] 

机构地区：[1]中国船舶重工集团公司第七○五研究所,陕西西安710075 [2]水下信息与控制重点实验室,陕西西安710075

出　　处：《舰船科学技术》2011年第2期86-90,共5页Ship Science and Technology

摘　　要：针对复杂多变、强多途和起伏干扰的浅海水声信道,建立了基于BELLHOP射线模型的时变衰落水声信道模型。在此基础上通过系统仿真的方法,分析了卷积码、RS码和串行级联码3种纠错编码方案在水声跳频通信系统中的性能,给出了信道下的仿真结果并进行了对比分析;研究了交织器位置对串行级联码纠错性能的影响。结果表明,交织器位于串行级联码编码之后具有更强的纠错能力,适合复杂多变的水声衰落信道。In order to simulate the complex time variant multi-path and fluctuation of shallow water acoustic communication channels, a time-variant multi-path fading channel model based on BELLHOP ray model is established. Three ECC schemes： eonvolutional code, RS code and serial concatenated code are proposed, the performance of the ECC schemes in underwater acoustic frequency-hopping communication system is analyzed by simulation. Besides, the performance of the different local interleaves in the serial concatenated code is analyzed by simulation, which demonstrate that when the interleave is behind the serial concatenated code, it has more powerful error correction capability than the others and is suitable for the complex time-variant fading underwater acoustic channel.

关 键 词：跳频通信 卷积码 RS码 串行级联码 交织器 

分 类 号：TN911.7[电子电信—通信与信息系统]