DocumentCode :
191094
Title :
A two-stage approach for the estimation of multiple input multiple output acoustic channels
Author :
Xingyang Nie ; Zhenduo Wang ; Fengzhong Qu ; Wen Xu ; Liuqing Yang
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
fYear :
2014
fDate :
5-8 Aug. 2014
Firstpage :
905
Lastpage :
912
Abstract :
Underwater acoustic communication (UWA) is a reliable way for data transmission in underwater environment, however, it is quite challenging due to its doubly spread characteristics 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 transmissions is derived based on parameterization for amplitude and delay variations with polynomial fitting, where the mathematical 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.
Keywords :
MIMO communication; polynomials; underwater acoustic communication; wireless channels; Doppler spread; MIMO UWA channel; OMP algorithm; amplitude variations; data transmission; delay variations; delay-Doppler scale grid; multiple input multiple output acoustic channels; multiple-input-multiple-output; orthogonal matching pursuit; polynomial fitting; problem estimation; single carrier block transmissions; underwater acoustic communication; underwater environment; Channel estimation; Delays; Doppler effect; Estimation; MIMO; Receivers; Transmitters; Multiple-input-multiple-output; Two-stage channel estimation; Underwater acoustic communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing, Communications and Computing (ICSPCC), 2014 IEEE International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4799-5272-4
Type :
conf
DOI :
10.1109/ICSPCC.2014.6986329
Filename :
6986329
Link To Document :
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