Power allocation in cognitive MISO wireless networks

Author

Xiao, Hai-lin ; Ouyang, Shan ; Zhao, Feng

Author_Institution

Sch. of Inf. & Commun., Guilin Univ. of Electron. Technol., Guilin, China

fYear

2010

fDate

28-30 July 2010

Firstpage

173

Lastpage

175

Abstract

In this paper, a spectrum sharing cognitive radio(CR) multiple input and single output (MISO) system is considered, which consists of a secondary user (SU) having multiple transmit antennas and a single receive antenna and a primary user (PU) have a single receive antenna. The channel state information (CSI) on the link between SU and PU is assumed to be perfectly known at the SU transmitter (SU-Tx). Such a system is subject to interference constraint and transmit power constraint. We formulate multi-constraint optimization problem in its equivalent form, and joint beamforming (BF) and power allocation to obtain the maximization capacity.

Keywords

array signal processing; cognitive radio; interference (signal); optimisation; radio transmitters; receiving antennas; transmitting antennas; beamforming; channel state information; cognitive MISO wireless networks; cognitive radio; interference constraint; maximization capacity; multiconstraint optimization problem; multiple input single output system; multiple transmit antennas; power allocation; primary user; radio transmitter; secondary user; single receive antenna; spectrum sharing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems (ICCCAS), 2010 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-8224-5

Type

conf

DOI

10.1109/ICCCAS.2010.5582055

Filename

5582055