Title :
Closed-form expression for optimal two-user MIMO unitary precoding
Author :
Jalali, Ali ; Love, David J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN
fDate :
4/1/2009 12:00:00 AM
Abstract :
In this paper we investigate the problem of optimal unitary precoding for multiuser multiple-input multiple-output (MIMO) wireless communication systems. In the case that there exist two users, we derive a closed-form solution for the unitary precoder that maximizes the sum rate. To provide additional insight, the optimal precoder is also characterized in several asymptotic regimes. Monte Carlo simulation results are also provided.
Keywords :
MIMO communication; Monte Carlo methods; precoding; Monte Carlo simulation; closed-form expression; multiuser multiple-input multiple-output wireless communication systems; optimal two-user MIMO unitary precoding; Closed-form solution; Control systems; Downlink; MIMO; Optimized production technology; Radio control; Receiving antennas; Signal processing; Signal to noise ratio; Wireless communication; Unitary precoding, wireless communication, multi-user MIMO communication.;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.081906
