Performance of uplink multi-user MIMO in LTE-advanced networks

Author

Yan, Yuyu ; Yuan, Huiyu ; Zheng, Naizheng ; Peter, Skov

Author_Institution

Ind. Environ., Nokia Siemens Networks, Beijing, China

fYear

2012

Firstpage

726

Lastpage

730

Abstract

In LTE Release-8, Multi-user MIMO (MU-MIMO) in the uplink direction is supported with improvement of LTE spectrum efficiency. The further enhancement of uplink reference signal in LTE Release-10 guarantees the bandwidth allocation flexibility and orthogonality of uplink MU-MIMO application in LTE networks. In this paper, the practical MU-MIMO scheduling flow is described and several utilized MU-MIMO pairing metrics are presented. The performance of MU-MIMO application is evaluated and analyzed in the LTE system-level simulator. The influence of different simulation assumptions, such as receiver type, receive antenna configuration and resource allocation strategy, to the uplink MU-MIMO application is investigated and presented in this paper.

Keywords

Long Term Evolution; MIMO communication; antenna arrays; mobile antennas; mobile radio; receiving antennas; resource allocation; scheduling; LTE Release-8; LTE spectrum efficiency; LTE system-level simulator; LTE-advanced networks; MU-MIMO pairing metrics; MU-MIMO scheduling flow; bandwidth allocation flexibility; receive antenna configuration; resource allocation strategy; uplink multiuser MIMO; uplink reference signal enhancement; Interference; MIMO; Measurement; Receiving antennas; Resource management; LTE-Advanced; Multi-User MIMO; Realistic Channel Estimation; Uplink;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communication Systems (ISWCS), 2012 International Symposium on

Conference_Location

Paris

ISSN

2154-0217

Print_ISBN

978-1-4673-0761-1

Electronic_ISBN

2154-0217

Type

conf

DOI

10.1109/ISWCS.2012.6328463

Filename

6328463