Performance of linear multi-user MIMO precoding in LTE system

Author

Ribeiro, Cassio B. ; Hugl, Klaus ; Lampinen, Marko ; Kuusela, Markku

Author_Institution

Nokia Group, Nokia Res. Center, Helsinki

fYear

2008

fDate

7-9 May 2008

Firstpage

410

Lastpage

414

Abstract

For scenarios with a large number of users to be served in one cell, high capacity gains can be achieved by transmitting independent data streams to different users sharing the same time-frequency resources. This technique is known as Multi-User MIMO (MU-MIMO). In this paper we investigate the performance of MU-MIMO operation in 3GPP LTE for different frequency granularities of the precoder at the OFDM transmitter. We also investigate the impact of channel correlation on the performance of the receiver when it is unaware of the interfererpsilas precoding vector. The performance is evaluated by means of semistatic system simulations.

Keywords

3G mobile communication; MIMO communication; OFDM modulation; precoding; transmitters; 3GPP LTE; LTE system; OFDM transmitter; channel correlation; linear multiuser MIMO precoding; precoding vector; time-frequency resources; Bandwidth; Downlink; Feedback; Frequency conversion; Long Term Evolution; MIMO; OFDM; Physical layer; Time frequency analysis; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Pervasive Computing, 2008. ISWPC 2008. 3rd International Symposium on

Conference_Location

Santorini

Print_ISBN

978-1-4244-1652-3

Electronic_ISBN

978-1-4244-1653-0

Type

conf

DOI

10.1109/ISWPC.2008.4556240

Filename

4556240