Title :
Computing performance guarantees for compressed sensing
Author :
Lee, Kiryung ; Bresler, Yoram
Author_Institution :
Dept. of ECE, Univ. of Illinois-Urbana-Champaign, Urbana, IL
fDate :
March 31 2008-April 4 2008
Abstract :
There are various conditions on the CS matrix for unique and stable recovery. These include universality, or spark, and UUP. Furthermore, quantitative bounds on the stability depend on related properties of the CS matrix. The construction of good CS matrices - satisfying the various properties - is key to successful practical applications of compressive sensing. Unfortunately, verifying the satisfiability of any of these properties for a given CS matrix involves infeasible combinatorial search. Our methods use i and semidefinite relaxation into a convex problem. Given a set of candidate CS matrices, our approach provides tools for the selection of good CS matrices with verified and quantitatively favorable performance.
Keywords :
computability; matrix algebra; sampling methods; signal processing; combinatorial search; compressed sensing; compressive sampling matrix; satisfiability; Compressed sensing; Inverse problems; Polynomials; Prototypes; Random number generation; Sampling methods; Sparks; Sparse matrices; Stability; Uncertainty; Basis Pursuit; Compressive Sampling; Semidefinite Programming; Spark; Uniform Uncertainty Principle;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4518813