Rate and Energy Efficient Power Control in a Cognitive Radio Ad Hoc Network

Author

Sanchez, Susan M. ; Souza, Richard Demo ; Fernandez, Evelio M. G. ; Reguera, Vitalio Alfonso

Author_Institution

Univ. Central Marta Abreu de Las Villas, Central Univ. of Las Villas (UCLV), Santa Clara, Cuba

Volume

20

Issue

5

fYear

2013

fDate

May-13

Firstpage

451

Lastpage

454

Abstract

Location awareness allows to define a concurrent transmission region where a primary and a secondary networks can coexist. We investigate the impact of joint rate and power control on the performance of a cognitive radio ad hoc network overlaying a primary system. The proposed strategies adequately adjust the secondary user transmit power to increase the concurrent transmission probability while respecting a given constraint on the achievable primary rate. Two power control strategies are described: Rate-Efficient Power Control to maximize the secondary capacity, and Energy-Efficient Power Control to minimize the secondary energy consumption. Numerical results show that the proposed schemes expand the concurrent transmission region and that it is possible to increase the average rate and save energy.

Keywords

ad hoc networks; cognitive radio; power control; cognitive radio ad hoc network; concurrent transmission region; energy consumption minimization; energy efficient power control; location awareness; primary networks; primary rate; rate control; secondary capacity; secondary networks; secondary user transmit power; Ad hoc networks; Cognitive radio; Educational institutions; Energy consumption; Joints; Mobile radio mobility management; Power control; Cognitive radio; energy efficiency; location awareness; power control;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2013.2251630

Filename

6475154