An Efficient Multiple Relay Selection Scheme for Cognitive Radio Systems

Author

Naeem, M. ; Lee, D.C. ; Pareek, U.

Author_Institution

Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada

fYear

2010

fDate

23-27 May 2010

Firstpage

1

Lastpage

5

Abstract

In this paper, we present a low-complexity Interference Aware Multiple Relay Selection (IAMRS) scheme for cognitive radio system. The main objective in selecting multiple relays is to maximize the SNR at the destination under the constraint of acceptable interference to the primary users (PU). The computational complexity of finding an optimal IAMRS by exhaustive search grows exponentially with the number of relays. In this paper, we propose an interference-aware greedy algorithm for the relay selection problem. The proposed algorithm has low computational complexity, and its effectiveness is verified through simulation results.

Keywords

cognitive radio; communication complexity; greedy algorithms; interference; cognitive radio system; computational complexity; interference-aware greedy algorithm; low-complexity interference aware multiple relay selection scheme; primary users; Availability; Cognitive radio; Computational complexity; Computational modeling; Greedy algorithms; Interference constraints; Nearest neighbor searches; Power system relaying; Relays; Time-varying channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications Workshops (ICC), 2010 IEEE International Conference on

Conference_Location

Capetown

Print_ISBN

978-1-4244-6824-9

Type

conf

DOI

10.1109/ICCW.2010.5503967

Filename

5503967