Leakage Based Precoding for Multi-User MIMO-OFDM Systems

Author

Sadek, Mirette ; Aissa, Sonia

Author_Institution

Phys. Sci. & Eng. Div., King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia

Volume

10

Issue

8

fYear

2011

fDate

8/1/2011 12:00:00 AM

Firstpage

2428

Lastpage

2433

Abstract

In downlink multi-user multiple-input multiple-output (MIMO) transmissions, several precoding schemes have been proposed to decrease interference among users. Notable among these precoding schemes is one that uses the signal-to-leakage-plus-noise ratio (SLNR) as an optimization criterion. In this paper, leveraging the efficiency of the SLNR optimization, we generalize this precoding scheme to MIMO orthogonal frequency division multiplexing (OFDM) multi-user systems where the OFDM is used to overcome the inter-symbol-interference (ISI) introduced by multipath channels. We also introduce a channel compensation technique that reconstructs the channel at the transmitter for every time instant given a significantly lower channel feedback rate by the receiver.

Keywords

MIMO communication; OFDM modulation; interference suppression; intersymbol interference; multipath channels; optimisation; precoding; SLNR optimization; channel compensation technique; channel feedback; downlink multiuser multiple-input multiple-output transmissions; interference reduction; intersymbol interference; leakage-based precoding; multipath channels; multiuser MIMO-OFDM systems; orthogonal frequency division multiplexing systems; signal-to-leakage-plus-noise ratio; Bit error rate; Decoding; MIMO; OFDM; Optimization; Signal to noise ratio; Transmitters; Multiple-input multiple-output (MIMO); channel compensation; orthogonal frequency division multiplexing (OFDM); precoding; signal-to-leakage-plus-noise ratio (SLNR);

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2011.062111.101748

Filename

5934687