Title :
Sum rate maximization for spectrum sharing multiuser MIMO network under rayleigh fading
Author :
Tang, Jie ; Bournaka, Georgia ; Lambotharan, Sangarapillai
Author_Institution :
Adv. Signal Process. Group, Loughborough Univ., Loughborough, UK
Abstract :
We study the sum rate maximization problem for spectrum sharing multiple input multiple output (MIMO) broadcast channels (BC) under Rayleigh fading. We assume that the receiver side has the perfect channel state information (CSI), however the transmitter side has partial CSI in the form of channel covariance matrix feedback. Based on multiple auxiliary variables, Karush-Kuhn-Tucker (KKT) optimality conditions and broadcast channel-multiple access channel (BC-MAC) duality, we investigate a sum rate optimization problem for spectrum sharing MIMO network under Rayleigh fading and solve it using an iterative technique. Simulation results are produced to demonstrate convergence of the proposed algorithm.
Keywords :
MIMO communication; Rayleigh channels; broadcast channels; cognitive radio; covariance matrices; iterative methods; multi-access systems; optimisation; radio spectrum management; BC-MAC duality; Karush-Kuhn-Tucker optimality condition; Rayleigh fading; broadcast channel-multiple access channel duality; channel covariance matrix feedback; channel state information; iterative technique; multiple-input multiple-output broadcast channels; partial CSI; spectrum sharing multiuser MIMO network; sum rate maximization; sum rate maximization problem; sum rate optimization problem; Covariance matrix; Fading; Interference; MIMO; Optimization; Receiving antennas; Wireless communication; Cognitive Radio; MIMO; Rayleigh fading; covariance feedback; partial CSI; sum rate maximization;
Conference_Titel :
Communication, Networks and Satellite (ComNetSat), 2012 IEEE International Conference on
Conference_Location :
Bali
Print_ISBN :
978-1-4673-0888-5
DOI :
10.1109/ComNetSat.2012.6380771
