- Title
- Coherent spectral analysis of asynchronously sampled signals
- Creator
- Hyder, Md Mashud; Mahata, Kaushik
- Relation
- IEEE Signal Processing Letters Vol. 18, Issue 2, p. 126-129
- Publisher Link
- http://dx.doi.org/10.1109/LSP.2010.2094607
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2011
- Description
- We propose a joint sparse signal recovery approach to coherent spectral analysis of irregularly sampled signals. These signals share the same frequencies, and are sampled asynchronously. Two types of solution procedures are considered. First one is a convex optimization approach, which optimizes a mixed ℓ ₂,₁ -norm. The other method minimizes an approximation of ℓ ₂,0 -norm and the resulting algorithm can be implemented using a few FFTs and IFFTs. We demonstrate the effectiveness of the sparse recovery approach using simulation experiments. In particular, the ℓ ₂,0 approximation approach is very fast. In addition, it offers increased resolution, improved robustness to noise, and works well with limited number of data samples.
- Subject
- coherence spectrum; joint sparse; sparse representation; spectral analysis
- Identifier
- http://hdl.handle.net/1959.13/1065349
- Identifier
- uon:17784
- Identifier
- ISSN:1070-9908
- Rights
- © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
- Language
- eng
- Full Text
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