阐述了网格编码调制(TCM)的原理及其在水声通信中的应用。采用TI公司的高性能DSP芯片TMS320C542实现了一个可以进行字符传输的水下无线通信系统。试验结果表明,网格编码调制技术能够使水下无线通信系统的性能得到明显改善。This paper discusses in detail the principle for Trellis Coded Modulat ion (TCM) and its application in underwater acoustic communication. The authors have implemented an underwater wireless communication system with the ability of character transmission by adopting high performance DSP chip TMS320C542 produced by TI Company. The testing result indicates that the Trellis Coded Modulation technique can improve evidently the performance with underwater wireless commun ication system.国家自然科学基金项目(60272028);; 福建省自然科学基金项目(D0110004
