8APSK_TCM编码调制方法在水声传输中的应用  

8APSK_TCM Coding Method Application in Underwater Acoustic Communication

作　　者：郭淑霞[1] 刘志斌[1] 仵敏娟[1] 

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《系统仿真学报》2007年第23期5431-5433,共3页Journal of System Simulation

基　　金：国家自然科学基金(60572098)

摘　　要：论述了应用于水声信道的网格编码调制技术,分析了影响其性能的主要因素为有效编码长度,最小乘积距离;在此基础上,提出了基于水声信道的8APSK_TCM编码调制方法,并在给定的水声信道下进行了仿真,仿真结果表明:8APSK_TCM模式相对于标准的TCM模式在信噪比相同的情况下,降低了系统的误码率,改善了水声通信系统的可靠性。The TCM coding method applied in underwater acoustic communication system was studied. The main factors which affected its performance were analyzed, that were the effective code length and minimum product distance. The method of designing asymmetric modulation----SAPSK_TCM based on the underwater acoustic channel was proposed, and the performance of it wassimulated in the Acoustic channel model. Simulation shows that the 8APSK_TCM scheme can bring a coding gain more than the normal scheme. This will improve the performance of underwater acoustic communication.

关 键 词：水声信道 信道编码 网格编码调制(TCM) 非对称相位调制(APSK) 

分 类 号：TN911[电子电信—通信与信息系统]