Joint beamforming and power control optimization by second-order cone programming approximation

Author

Hu, Chunjing ; Wang, Fanggang ; Wang, Wenbo

Author_Institution

Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2010

fDate

11-14 Nov. 2010

Firstpage

147

Lastpage

150

Abstract

In multiuser cognitive radio (CR) network, we address the problem of joint transmit beamforming (BF) and power control (PC) for secondary users (SUs) when they are allowed to transmit simultaneously with primary users (PUs). The objective is to optimize the network sum rate under the interference constraints of PUs. Second-order cone programming approximation (SOCPA) method is proposed as an effective algorithm. Typical network models are approximated to second-order cone programming problems and solved by interior-point method. Finally the network sum rates for different PU and SU numbers are assessed by simulation.

Keywords

approximation theory; array signal processing; cognitive radio; interference (signal); multiuser channels; optimisation; power control; radio networks; interference constraints; multiuser cognitive radio network; power control optimization; primary users; second-order cone programming approximation; secondary users; transmit beamforming; Antennas; Approximation methods; Interference; Petroleum; Signal to noise ratio; Cognitive radio; beamforming; power control; second-order cone programming;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Technology (ICCT), 2010 12th IEEE International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6868-3

Type

conf

DOI

10.1109/ICCT.2010.5689310

Filename

5689310