Downlink SINR Distribution of Linearly Precoded Multiuser MIMO Systems

Author

Lin, Zihuai ; Sørensen, Troels B. ; Mogensen, Preben E.

Author_Institution

Aalborg Univ., Aalborg

Volume

11

Issue

11

fYear

2007

fDate

11/1/2007 12:00:00 AM

Firstpage

850

Lastpage

852

Abstract

This paper derives mathematical expressions for the SINR distribution in systems with linearly precoded multiuser MIMO and frequency domain packet scheduling. The packet scheduler is able to exploit the available multiuser diversity in both time, frequency and spatial domains. Our analysis model is confined to 3GPP downlink transmission in which we specifically investigate the single user (SU) and multi-user (MU) spatial division multiplexing (SDM) MIMO schemes. From the analytical results we find that the outage probability for systems using the SU-MIMO scheme is larger than the one for the MU-MIMO scheme. Also, in comparison to systems without precoding, linear precoding can improve the outage probability.

Keywords

MIMO systems; linear codes; packet switching; precoding; radio links; space division multiplexing; 3GPP downlink transmission; downlink SINR distribution; frequency domain packet scheduling; linear precoding; multiuser MIMO systems; multiuser diversity; outage probability; single user MIMO systems; spatial division multiplexing; Antenna arrays; Base stations; Downlink; Frequency diversity; Frequency domain analysis; MIMO; OFDM; Receiving antennas; Scheduling algorithm; Signal to noise ratio;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2007.071082

Filename

4381365