Title :
Sum-Rate Analysis of Multiuser MIMO System with Zero-Forcing Transmit Beamforming
Author :
Lu, Peng ; Yang, Hong-Chuan
Author_Institution :
Dept. of Elec. & Comp. Engr., Univ. of Victoria, Victoria, BC
Abstract :
In this paper, we present the exact sum-rate analysis of the multiuser multiple-input multiple-output (MIMO) broadcast channel with zero-forcing transmit beamforming. We develop the analytical expressions of the ergodic sum-rate for two low-complexity user selection strategies for the important dual- transmit-antenna scenario. Based on the analytical results, we examine the parameter optimization problem to properly trade off between channel power gain and directional gain in term of maximizing the ergodic sum rate offered by multiuser diversity.
Keywords :
MIMO communication; antennas; communication complexity; diversity reception; channel power gain; directional gain; dual-transmit-antenna scenario; ergodic sum-rate; low-complexity user selection strategies; multiuser diversity; multiuser multiple-input multiple-output broadcast channel; parameter optimization problem; sum-rate analysis; zero-forcing transmit beamforming; Array signal processing; Base stations; Broadcasting; Communications Society; Costs; Design optimization; Interference; MIMO; Receiving antennas; Transmitting antennas;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.774
