A Lightweight Algorithm for Probability-Based Spectrum Decision Scheme in Multiple Channels Cognitive Radio Networks

Author

Do, Cuong T. ; Tran, Nghi H. ; Choong Seon Hong ; Sungwon Lee ; Jae-Jo Lee ; Wontae Lee

Author_Institution

Dept. of Comput. Enginneering, Kuyng Hee Univ., South Korea

Volume

17

Issue

3

fYear

2013

fDate

Mar-13

Firstpage

509

Lastpage

512

Abstract

Compare with the sensing-based spectrum decision scheme, the probability-based spectrum decision scheme has been shown to yield a shorter queuing delay time in Cognitive Radio (CR) system that consists of many Primary Users (PUs) and Secondary Users (SUs). However, the former scheme had cumbersome algorithms and slowly converging speed. In this paper, by introducing Lagrange function, we propose a lightweight algorithm with the computational effort O(N) to define the optimal distribution probability vector. Numerical results demonstrate a high degree of accuracy for the derived expressions.

Keywords

cognitive radio; decision making; delays; queueing theory; radio spectrum management; statistical distributions; wireless channels; CR system; Lagrange function; PU; SU; computational effort; lightweight algorithm; multiple channels cognitive radio networks; optimal distribution probability vector; primary users; probability-based spectrum decision scheme; secondary users; sensing-based spectrum decision scheme; shorter queuing delay time; Cognitive radio; Delay; Electric breakdown; Queueing analysis; Sensors; Servers; Vectors; Cognitive radio; dynamic spectrum access; multiple channels;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.012313.122589

Filename

6420820