Adaptive link maintenance in cognitive radio within equivalent and nonequivalent channel bandwidths

Samer T. Talat, Li-Chun Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Cognitive radio requires sophisticated techniques in spectrum sensing and spectrum analysis to enhance spectrum decision functionality. Generally, it is recognized that if a Primary user (PU) appears in the spectrum band occupied by secondary user (SU). SU should vacate the current spectrum band and move to the available spectrum immediately. However, this kind of spectrum change can decrease the total throughput of SU. The alternative method is to make the SU wait until the PU has left the spectrum band and then transmit again. In this paper, we propose an efficient spectrum allocation scheme which dynamically makes the best choice for the SU within equivalent and nonequivalent channel bandwidths to improve its throughput. This dynamic link maintenance algorithm determines the SU highest channel priority index before transmitting again. Specifically, the SU's stay in the current channel if it has the highest throughput priority index achieved; otherwise, the SU selects the sensed channel with the highest priority index.

Original languageEnglish
Title of host publication2008 Mosharaka International Conference on Communications, Propagation and Electronics, MIC-CPE
PublisherIEEE
Pages32-37
ISBN (Print)9957486020, 9789957486020
DOIs
StatePublished - 17 Sep 2008
Event2008 Mosharaka International Conference on Communications, Propagation and Electronics, MIC-CPE - Amman, Jordan
Duration: 6 Mar 20088 Mar 2008

Publication series

Name2008 Mosharaka International Conference on Communications, Propagation and Electronics, MIC-CPE

Conference

Conference2008 Mosharaka International Conference on Communications, Propagation and Electronics, MIC-CPE
CountryJordan
CityAmman
Period6/03/088/03/08

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