Performance Evaluation of Closed Loop Transmission for LTE-A Uplink MIMO

Author

Chen, Wenshi ; Jin, Shi

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

fYear

2011

fDate

23-25 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

Single carrier frequency division multiple access has been adopted as uplink multiple access scheme for next generation cellular system. This paper deals with the closed loop transmission for Long Term Evolution-Advanced (LTE-A) uplink. In the uplink, the feedback for support of uplink data transmission consists of rank indicator (RI), precoding matrix indicator (PMI) and channel quality indicator (CQI). The expression for the received signal-to-interference-plus-noise ratio (SINR) of uplink MIMO has been derived. The joint selection method of RI and PMI which maximizes the mutual information associated with the derived SINR is presented. The CQI selection scheme based on the exponential effective SNR mapping is proposed to maximize the spectral efficiency under a given block error ratio (BLER) target. Simulation results for LTE-A uplink scenario shows that the presented closed loop transmission scheme can significantly improve spectral efficiency under a given BLER constraint.

Keywords

Long Term Evolution; MIMO communication; cellular radio; feedback; frequency division multiple access; interference suppression; next generation networks; precoding; radiofrequency interference; BLER target; CQI; LTE-A uplink MIMO; Long Term Evolution-advanced uplink multiple input multiple output; PMI; RI; SINR; SNR mapping; block error ratio target; channel quality indicator; closed loop transmission scheme; joint selection method; mutual information; next generation cellular system; precoding matrix indicator; rank indicator; signal-to-interference-plus-noise ratio; single carrier frequency division multiple access; spectral efficiency; uplink data transmission; uplink multiple access scheme; Interference; MIMO; Modulation; Multiplexing; Mutual information; Receiving antennas; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on

Conference_Location

Wuhan

ISSN

2161-9646

Print_ISBN

978-1-4244-6250-6

Type

conf

DOI

10.1109/wicom.2011.6036644

Filename

6036644