Title :
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
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;
Conference_Titel :
Communications, Circuits and Systems (ICCCAS), 2010 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8224-5
DOI :
10.1109/ICCCAS.2010.5582055
