A Two-Stage Approach for the Estimation of MIMO Acoustic Channels

2014 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC 2014)——Underwater acoustic communication(UWA) is a reliable way for data transmission in underwater environment,however,it is quite challenging due to its doubly spread characteristic as delay spread and Doppler spread.In this paper,a discrete-time channel input-output relationship for multiple-input-multiple-output(MIMO) single-carrier block transmission is derived based on parameterization for amplitude and delay varitions with polynomial fitting,where the mathmatical model is characterized by a few parameter sets,transforming the estimation problem into estimation of the low-dimensional parameter sets.Then a two-stage sparse approach for delay-spread and Doppler-scale estimation of MIMO UWA channel is proposed,using orthogonal matching pursuit(OMP) algorithm to search on the delay-Doppler scale grid.The results of the proposed approach are further evaluated by simulations.

关键词： 水下声学通信 数据传输 双重传播 正交匹配追踪 The 2014 IEEE International Conference on Signal Processing, Communications and Computing (ICSPC

主讲人：A.P. Fengzhong Qu 机构：Ocean College, Zhejiang University

时长：0:16:52 年代：2014年