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arXiv 0902.1853cs.ITmath.IT
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稀疏信号处理的统一方法

A Unified Approach to Sparse Signal Processing

F. Marvasti, A. Amini, F. Haddadi, M. Soltanolkotabi, B. H. Khalaj, A. Aldroubi, S. Holm, S. Sanei, J. Chambers

摘要:

稀疏信号处理的统一观点是以教程的形式提出的,汇集了各个领域。对于这些领域中的每一个,已经开发出利用稀疏性的各种算法和技术,被简洁地描述。显着降低采样率和处理操作的共同利益。稀疏信号处理的主要应用是采样、编码、谱估计、阵列处理、分量分析和多径信道估计。在重建算法方面,与随机采样、压缩感知和创新率相联系。有限/实伽罗瓦域中的信道编码引入的冗余与具有类似重构算法的采样相关。接下来讨论Prony、Pisarenko和MUSIC方法用于稀疏频域表示。具体地说,Prony方法的关系,一个零化滤波器和误差多项式的编码强调,Pisarenko和MUSIC方法是Prony方法的进一步改进。这样的谱估计方法,然后涉及到阵列处理中的多源定位和DOA估计。稀疏阵列波束形成和稀疏传感器网络的概念也被介绍。在不可观测的源信号的稀疏性也被证明,以促进声源分离在SCA,在这方面开发的算法也被广泛用于压缩感知。最后,多径信道估计问题被证明有一个稀疏的制定,类似的采样和编码算法被用来估计OFDM信道。

英文摘要:

A unified view of sparse signal processing is presented in tutorial form by bringing together various fields. For each of these fields, various algorithms and techniques, which have been developed to leverage sparsity, are described succinctly. The common benefits of significant reduction in sampling rate and processing manipulations are revealed. The key applications of sparse signal processing are sampling, coding, spectral estimation, array processing, component analysis, and multipath channel estimation. In terms of reconstruction algorithms, linkages are made with random sampling, compressed sensing and rate of innovation. The redundancy introduced by channel coding in finite/real Galois fields is then related to sampling with similar reconstruction algorithms. The methods of Prony, Pisarenko, and MUSIC are next discussed for sparse frequency domain representations. Specifically, the relations of the approach of Prony to an annihilating filter and Error Locator Polynomials in coding are emphasized; the Pisarenko and MUSIC methods are further improvements of the Prony method. Such spectral estimation methods is then related to multi-source location and DOA estimation in array processing. The notions of sparse array beamforming and sparse sensor networks are also introduced. Sparsity in unobservable source signals is also shown to facilitate source separation in SCA; the algorithms developed in this area are also widely used in compressed sensing. Finally, the multipath channel estimation problem is shown to have a sparse formulation; algorithms similar to sampling and coding are used to estimate OFDM channels.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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