Title :
Comparative study for Tomlinson -Harashima Precoding based on MMSE criteria in multiuser MIMO downlink system
Author :
Li, Cong ; Iwanami, Yasunori ; Okamoto, Eiji
Author_Institution :
Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol., Nagoya, Japan
Abstract :
In this paper, we propose a novel method of Cholesky factorization based on the minimum mean square error (MMSE) criterion for Tomlinson-Harashima precoding (THP), which is applied to the downlink of multiuser multiple-input multiple-output (MU-MIMO) system with single mobile antenna equipped for each user. The proposed scheme is also applicable to the MU-MIMO system with multiple mobile antennas for each user. Our proposed de-composition method for THP with MMSE criterion provides a clear theoretical basis and we have compared it with the existing block diagonalization (BD) and dirty paper coding (DPC) schemes. As a result, the BER characteristics among BD, THP with MMSE and DPC have been clarified.
Keywords :
MIMO communication; antenna arrays; least mean squares methods; mobile antennas; precoding; BER characteristics; Cholesky factorization; MMSE criteria; Tomlinson-Harashima precoding; block diagonalization; decomposition method; dirty paper coding; minimum mean square error criterion; multiple mobile antennas; multiple-input multiple-output system; multiuser MIMO downlink system; single mobile antenna; Base stations; Bit error rate; Downlink; MIMO; Mean square error methods; Mobile antennas; Mobile computing; Multiuser detection; Signal processing; Transmitters; BD(Block Diagonalization); DPC(Dirty Paper Coding); MU-MIMO(multiuser multiple-input multiple-output); THP(Tomlinson-Harashima Precoding;
Conference_Titel :
TENCON 2009 - 2009 IEEE Region 10 Conference
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-4546-2
Electronic_ISBN :
978-1-4244-4547-9
DOI :
10.1109/TENCON.2009.5396131
