A distributed relay selection algorithm for cognitive radio ad-hoc networks

Author

Li, Yun ; Zhang, Ruifeng ; Wang, Chonggang ; Daneshmand, Ali ; You, Xiaohu

Author_Institution

Special Res. Center for Opt. Internet & Wireless Inf. Networks, Chongqing Univ. of Post & Telecommun., Chongqing, China

fYear

2010

fDate

25-29 Oct. 2010

Firstpage

439

Lastpage

442

Abstract

Cognitive radio has been proposed as the means for secondary users to promote the efficient utilization of spectrum. Meanwhile, Cooperative relay is well known as a powerful technology to combat signal fading in a wireless medium. In this paper, we discuss a new relay selection algorithm for cognitive radio ad-hoc networks by utilizing cooperative relay to improve spectrum diversity and transmission rate. We define a cooperation-table which considers several aspects including channel gain, channel available probability and spectrum heterogeneity of secondary nodes. Based on this cooperation-table, a new distributed relay selection algorithm is proposed that choose a relay node to maximize the transmission rate of the source node. Simulation results demonstrate the effectiveness of the relay selection algorithm.

Keywords

ad hoc networks; cognitive radio; cooperative communication; fading channels; telecommunication network routing; ad hoc networks; channel available probability; channel gain; cognitive radio; cooperative relay; distributed relay selection; secondary users; signal fading; spectrum diversity; spectrum heterogeneity; transmission rate; Ad hoc networks; Algorithm design and analysis; Cognitive radio; Peer to peer computing; Relays; Strontium; Throughput; Cognitive radio; cooperation-table; cooperative communications; relay selection;

fLanguage

English

Publisher

ieee

Conference_Titel

Network and Service Management (CNSM), 2010 International Conference on

Conference_Location

Niagara Falls, ON

Print_ISBN

978-1-4244-8910-7

Electronic_ISBN

978-1-4244-8908-4

Type

conf

DOI

10.1109/CNSM.2010.5691264

Filename

5691264