Analysis of Cognitive Radio Networks with Channel Aggregation and Imperfect Sensing

Author

Ngatched, T.M.N. ; Alfa, Attahiru S. ; Cai, Jun

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Manitoba, Winnipeg, MB, Canada

fYear

2011

fDate

July 31 2011-Aug. 4 2011

Firstpage

1

Lastpage

6

Abstract

This paper considers a cognitive radio network where the cognitive user has a constant bandwidth which is K times that of a primary user. The primary system consists of constant M primary channels and the cognitive system consists of N = [M/K] channels, where [x] is the largest integer not greater than x. The effects of imperfect spectrum sensing (with false alarms and misdetections) are analyzed using a Markov chain. Explicit expressions for state dependent transition rates are derived for the case M = 6 and K = 2, and the system performance is evaluated in terms of throughput, blocking probability, and forced termination probability.

Keywords

Markov processes; cognitive radio; radio networks; radio spectrum management; Markov chain; blocking probability; channel aggregation; cognitive radio networks; cognitive system; forced termination probability; imperfect sensing; imperfect spectrum sensing; state dependent transition rates; throughput; Bandwidth; Cognitive radio; Markov processes; Sensors; Throughput; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Communications and Networks (ICCCN), 2011 Proceedings of 20th International Conference on

Conference_Location

Maui, HI

ISSN

1095-2055

Print_ISBN

978-1-4577-0637-0

Type

conf

DOI

10.1109/ICCCN.2011.6006078

Filename

6006078