哈尔滨工程大学学报2017，Vol.38Issue(5)：727-732,6.DOI:10.11990/jheu.201608059
水声变换域通信技术中的MMP-DCD稀疏信道估计方法
MMP-DCD based sparse channel estimation algorithm for underwater acoustic TDCS
摘要
Abstract
This paper addresses the defect of the acoustic communication system with band limitations, whose per-formance seriously deteriorates in the acoustic environment with significant disturbances.The transform domain com-munication system technology was introduced into the field of underwater acoustic ( UWA) communication. Based on the sparse characteristics of the underwater acoustic channel, a multipath matching pursuit ( MMP ) channel es-timation method was proposed based on dichotomous coordinate descent ( DCD) technology. The method satisfies the restricted isometry property ( RIP ) to searches for a number of possible support sets that are most relevant to the residual vector, and DCD can solve the problem of large computational complexity and numerical instability by ma-trix inversion in MMP channel estimation algorithm. The simulation results show that mean square error and bit error rate of MMP algorithm are better than the least squares algorithm. Convolution coding can reduce the bit error rate of communication system.关键词
变换域通信系统/压缩感知/水声信道估计/最小二乘法/多路径匹配追踪/对分坐标下降算法/约束等距限制/MMP-DCDKey words
TDCS/compress sensing/underwater acoustic channel estimation/least squares/multipath matching pursuit/dichotomous coordinate descent/RIP/MMP-DCD分类
信息技术与安全科学引用本文复制引用
王永刚,孙大军,吴腾飞,张友文,张晓亮..水声变换域通信技术中的MMP-DCD稀疏信道估计方法[J].哈尔滨工程大学学报,2017,38(5):727-732,6.基金项目
国家自然科学基金项目(50909029,61471138,61531012) （50909029,61471138,61531012）
国际科技合作专项项目(2013DFR20050) （2013DFR20050）
水声技术重点实验室基金项目(201420040) （201420040）
国防基础科研项目(B2420132004). （B2420132004）
