A New Access Algorithm in Cognitive Radio Systems

Author

Hou, Hua ; Li, Zhihua ; Sun, Pei

Author_Institution

Sch. of Inf. & Electron. Eng., Hebei Univ. of Eng., Handan

fYear

2008

fDate

21-22 Dec. 2008

Firstpage

71

Lastpage

74

Abstract

A new access algorithm in cognitive radio systems is proposed inthis paper, which can decrease primary users´ access delay effectively and guarantee the access throughput fairness among primary users and secondary users. In the time domain, primary users apply 1-persisten access policy and secondary users apply exponential backoff retransmission policy; while in the frequency domain primary users select several suitable subcarriers as access channels and secondary users select only the subcarrier with the least interference temperature as access channel. Simulations confirm the perfect performance of the proposed algorithm.

Keywords

cognitive radio; frequency-domain analysis; subscriber loops; wireless channels; access algorithm; access channels; cognitive radio system; exponential backoff retransmission; frequency domain analysis; interference temperature; Cognitive radio; Delay; Frequency domain analysis; Helium; Interference; OFDM; Temperature; Throughput; Transceivers; Wireless communication; Aloha; Cognitive radio; Delay; Primary user; Secondary user; Throughput fairness;

fLanguage

English

Publisher

ieee

Conference_Titel

Knowledge Acquisition and Modeling Workshop, 2008. KAM Workshop 2008. IEEE International Symposium on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3530-2

Electronic_ISBN

978-1-4244-3531-9

Type

conf

DOI

10.1109/KAMW.2008.4810427

Filename

4810427