Unconstrained Regularized lp-Norm Based Algorithm for the Reconstruction of Sparse Signals

被引:0
|
作者
Pant, Jeevan K. [1 ]
Lu, Wu-Sheng [1 ]
Antoniou, Andreas [1 ]
机构
[1] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC V8W 3P6, Canada
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中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new algorithm for signal reconstruction in a compressive sensing framework is presented. The algorithm is based on minimizing an unconstrained regularized l(p) norm with p < 1 in the null space of the measurement matrix. The unconstrained optimization involved is performed by using a quasi-Newton algorithm in which a new line search based on Banach's fixed-point theorem is used. Simulation results are presented, which demonstrate that the proposed algorithm yields improved reconstruction performance and requires a reduced amount of computation relative to several known algorithms.
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页码:1740 / 1743
页数:4
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