On the Feedback Enhancement and System Performance Evaluation of Downlink MU-MIMO for 3GPP LTE-Advanced

Author

Lu, Di ; Yang, Hongwei ; Wu, Keying

Author_Institution

Res. & Innovation Center, Alcatel-Lucent Shanghai Bell, Shanghai, China

fYear

2011

fDate

15-18 May 2011

Firstpage

1

Lastpage

5

Abstract

The feedback accuracy for the multiuser multiple input multiple output (MU-MUMO) system is to be enhanced in the release 10 of 3GPP LTE specification. In this paper, we propose a feedback mechanism together with associated preceding and scheduling schemes that could improve the feedback accuracy for both single user (SU) and multiuser MIMO. System level simulation results of the proposed scheme are evaluated and compared with the baseline of LTE Release 8 MU-MIMO. Results show that with a small amount of extra overhead, the proposed scheme can outperform Release 8 MU-MIMO by at least 10%.

Keywords

3G mobile communication; Long Term Evolution; MIMO communication; 3GPP LTE specification; downlink MU-MIMO; feedback accuracy; feedback enhancement; feedback mechanism; multiuser MIMO system; multiuser multiple input multiple output system; performance evaluation; scheduling scheme; Accuracy; Antenna feeds; Correlation; Downlink; Indexes; MIMO;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Conference_Location

Budapest

ISSN

1550-2252

Print_ISBN

978-1-4244-8332-7

Type

conf

DOI

10.1109/VETECS.2011.5956298

Filename

5956298