Title :
Iterative MMSE Precoding for MIMO Interference Channel
Author :
Wang, Xuzhen ; Niu, Kai ; Yu, Guangwei ; He, Zhiqiang
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, a novel precoding technique is proposed to improve the performance of the MIMO interference channel (MIC). Since the reachable sum-rate is a long-term problem, we present an iterative approach to improve the power-offset and achieve a higher sum-rate than the ordinary scheme. Considering the difference between MIC and multi-input multi-output (MIMO) system, we design joint precoding based on minimum mean square error (MMSE) by the Lagrangian multiplier method for the different transmitters, which is an iterative procedure to achieve the optimal structure. By setting a reasonable threshold for the iterative process, the effect of the crosstalk in MIC is removed significantly. Simulation results show the effectiveness of presented algorithm.
Keywords :
MIMO communication; iterative decoding; least mean squares methods; precoding; Lagrangian multiplier method; MIMO interference channel; iterative MMSE precoding; joint precoding; minimum mean square error; multi-input multi-output system; Helium; Interference channels; Iterative methods; Lagrangian functions; MIMO; Microwave integrated circuits; Receiving antennas; Transceivers; Transmitters; Transmitting antennas;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5304125
