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ISRN Communications and Networking
Volume 2012 (2012), Article ID 607825, 13 pages
http://dx.doi.org/10.5402/2012/607825
Research Article

Spectrum-Efficient Cognitive Radio Transceiver Using Multiwavelet Filters

Centre for Multimedia and Network Technology, School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798

Received 31 March 2012; Accepted 31 May 2012

Academic Editors: H. Ikeda and C. Yang

Copyright © 2012 Manju Mathew et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Cognitive radio (CR) transceiver that can offer adequate data rate and multiuser support for future wireless networks is a promising technology for reliable and spectrum-efficient mobile communication. Orthogonal frequency division multiplexing (OFDM) and scalar wavelet based schemes have been proposed as physical layer techniques for CR. This paper proposes multiwavelet packet-based multicarrier multiple-access scheme as an equally promising candidate for multi-user CR networks and using existing orthonormal multiwavelets, the performance of the proposed system is evaluated. It is shown that the error performance of the proposed system under frequency and phase offset conditions is comparable with existing schemes.