Deconvolution of sparse underwater acoustic multipath channel with a large time-delay spread

The Journal of the Acoustical Society of America
Wen-Jun ZengXian-Da Zhang

Abstract

The deconvolution of multipath underwater acoustic channel with a large time-delay spread is investigated. The channel deconvolution involves estimating the multipath time-delays and attenuation factors from a noisy received signal consisting of multiple overlapped signals. Similar to conventional deconvolution methods, the proposed method estimates channel impulse response based on least-squares criterion. However, the proposed method harnesses the sparse structure of an underwater acoustic channel, and [script-l](1)-norm of the channel impulse response is adopted as the cost function to be minimized. In addition, the available a priori knowledge of support constraint and attenuation factor constraint are imposed and channel deconvolution problem is converted to a convex optimization problem. Instead of employing the existing standard algorithms, which require huge storage space and high computational complexity, a simple iterative algorithm for solving the optimization problem with fast convergence rate and low complexity is developed. The computational complexity of the proposed algorithm is O(N log(2)(N)) per iteration with N being the length of the received signal. Simulation results confirm that the proposed method provid...Continue Reading

References

Nov 1, 2003·The Journal of the Acoustical Society of America·Michael J RoanLeon H Sibul
Dec 3, 2008·The Journal of the Acoustical Society of America·Hyrum S Anderson, Maya R Gupta

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Citations

Apr 17, 2012·The Journal of the Acoustical Society of America·Shima H AbadiDavid R Dowling
Nov 14, 2012·The Journal of the Acoustical Society of America·Shima H AbadiDavid R Dowling
Apr 6, 2013·The Journal of the Acoustical Society of America·Wen-Jun ZengHing Cheung So
Jan 28, 2012·The Journal of the Acoustical Society of America·Wen-Jun Zeng, Wen Xu
Sep 1, 2011·The Journal of the Acoustical Society of America·Xue JiangXi-Lin Li
Jan 3, 2019·The Journal of the Acoustical Society of America·Xiangxia MengYahui Lei

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