Accession Number:

ADA508474

Title:

Mixed-Signal Parallel Compressed Sensing and Reception for Cognitive Radio

Descriptive Note:

Conference paper

Corporate Author:

TEXAS A AND M UNIV COLLEGE STATION DEPT OF ELECTRICAL ENGINEERING

Report Date:

2008-01-01

Pagination or Media Count:

5.0

Abstract:

A parallel structure to do spectrum sensing in Cognitive Radio CR at sub-Nyquist rate is proposed. The structure is based on Compressed Sensing CS that exploits the sparsity of frequency utilization. Specifically, the received analog signal is segmented or time-windowed and CS is applied to each segment independently using an analog implementation of the inner product, then all the samples are processed together to reconstruct the signal. Applying the CS framework to the analog signal directly relaxes the requirements in wideband RF receiver front-ends. Moreover, the parallel structure provides a design flexibility and scalability on the sensing rate and system complexity. This paper also provides a joint reconstruction algorithm that optimally detects the information symbols from the sub-Nyquist analog projection coefficients. Simulations showing the efficiency of the proposed approach are also presented.

Subject Categories:

  • Numerical Mathematics
  • Computer Programming and Software
  • Miscellaneous Detection and Detectors
  • Radiofrequency Wave Propagation
  • Command, Control and Communications Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE