浅海水声语音通信软件无线电系统设计研究  

Study on Underwater Acoustic Voice Communication System Based on Software-Defined Radio

作　　者：孙凤宇[1] 

机构地区：[1]同济大学电信学院信息与通信工程系,201804

出　　处：《中国科技信息》2008年第18期85-87,共3页China Science and Technology Information

摘　　要：本文对水声语音通信目前的热点研究技术进行了研究和比较,遵循整体最优的设计原则,结合软件无线电数字化和可编程的设计思想,对浅海水声语音通信系统的软件无线电系统设计进行了研究,讨论了变速率语音编码、准循环LDPC信道编码、π/4-DQPSK调制技术和CMA均衡技术在系统中应用的可行性,给出了系统设计方案。Some theories and techniques for each part of underwater acoustic communication system are studied and cornpared in this paper. The integral analysis of the communication system is taken as the most important rule of the design. A design of the system based on Software-defined Radio using variable rate speech coding, quasi-eycle LDPC codes, π/ 4-DQPSK modem technique and LMS equalization technique is given in this paper.

关 键 词：水声通信 Π/4-DQPSK调制 准循环LDPC码 CMA 软件无线电 

分 类 号：TN929.3[电子电信—通信与信息系统]