水声信道的D-SCCC级联编码仿真  

Simulation Research of D-SCCC Based on Underwater Acoustic Communication

作　　者：郭淑霞[1] 刘冰[1] 高颖[2] 黄国栋[2] 

机构地区：[1]西北工业大学无人机特种技术国家重点实验室,西安710065 [2]西北工业大学航海学院,西安710072

出　　处：《北京邮电大学学报》2010年第1期129-132,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(60572098)

摘　　要：论述了应用于水声通信的双串行级联编码(D-SCCC)技术;针对水声通信在某些应用场合高可靠性要求,通过对误码率(BER)的分析,提出了提高水声通信可靠性的编码设计方法,并在给定的水声信道下进行了仿真.仿真结果表明,相同码率下双串行级联编码与SCCC算法相比,BER瀑布区陡度增大,在BER为10-5时有0.5 dB的编码增益;相同码率下SCCC算法与Turbo码相比,可有效改善Turbo码BER在10-4～10-5出现的错误平层,满足了水声通信传输遥控与遥测指令时的高可靠性需求.The double-serially concatenated convolutional codes （D-SCCC） method applied in underwater acoustic communication system was studied. In view of the acoustic communication＇ s requirement of high reliability, a new coding method was proposed to improve the reliability of communication through analyzing bit error rate （BER）, and a simulation based on a given underwater channel has been made. Simulations show that at the same bit rate D-SCCC increases the waterfall area＇ s steepness of BER compared with SCCC and has 0.5 dB coding gain in the BER of 10^-5, and D-SCCC improves error-floor of Turbo code＇ s BER when BER is between 10 ^-4 and 10^ -5. This can satisfy requirement of high reliability when the underwater acoustic transmits remote measurement and remote-controlled commands.

关 键 词：水声信道 双串行级联编码 错误平层 

分 类 号：TN911[电子电信—通信与信息系统]