Improved Leakage-Based Precoding with Vector Perturbation for MU-MIMO Systems

Author

Hak-Jin Kim ; Jong-Seob Baek ; Ji-Myung Oh ; Jong-Soo Seo

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

16

Issue

11

fYear

2012

fDate

11/1/2012 12:00:00 AM

Firstpage

1868

Lastpage

1871

Abstract

In this paper, we present an improved leakage-based transmit precoding scheme that is composed of vector perturbation (VP), pre-filter (PF), and signal-to-leakage-plus-noise ratio (SLNR) precoder for multi-user multi-input multi-output (MU-MIMO) systems. In particular, we propose a new PF capable of greatly improving the system performance by mitigating residual leakage effects caused by VP. Through the bit-error-rate (BER) evaluations, we verify the superiority of the proposed transmit precoding scheme to various conventional block diagonalization (BD)- and SLNR-based precoding schemes exploiting PF and VP.

Keywords

MIMO communication; error statistics; precoding; BER evaluations; MU-MIMO systems; PF capable; SLNR-based precoding schemes; bit-error-rate evaluations; block diagonalization; improved leakage-based transmit precoding scheme; multiuser multiinput multioutput systems; prefilter; residual leakage effects; signal-to-leakage-plus-noise ratio precoder; transmit precoding scheme; vector perturbation; Bit error rate; Interference; MIMO; Niobium; Receivers; Signal to noise ratio; Vectors; Broadcast channel; multi-user multi-input multi-output system; transmit precoding; vector perturbation;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.092812.121688

Filename

6324375