Practical channel acquisition for massive MIMO systems in LTE

Author

Runhua Chen ; Qiubin Gao ; Hui Li ; Tamrakar, Rakesh ; Shaohui Sun

Author_Institution

State Key Lab. of Wireless Mobile Commun., China Acad. of Telecommun. Technol. (CALL), Beijing, China

fYear

2015

fDate

16-19 Feb. 2015

Firstpage

47

Lastpage

51

Abstract

In this paper, practical CSI acquisition methods for massive MIMO systems are investigated. The implementation issues of channel reciprocity based feedback in TDD are discussed, and a two-dimension feedback mechanism for FDD is proposed where the horizontal and vertical domain channels are reported separately. System level evaluation results demonstrate that massive MIMO with the two-dimensional feedback mechanism provides realistic gains over antenna virtualization beamforming, whereas additional gain is feasible through UL/DL channel reciprocity.

Keywords

Long Term Evolution; MIMO communication; array signal processing; feedback; frequency division multiplexing; mobile antennas; time division multiplexing; virtualisation; 2D feedback mechanism; CSI acquisition methods; FDD; LTE; Long Term Evolution; TDD; UL-DL channel reciprocity; antenna virtualization beamforming; channel acquisition; channel reciprocity based feedback; frequency division duplexing; horizontal domain channels; massive MIMO systems; multiinput-multioutput systems; time division duplexing; vertical domain channels; Antenna arrays; Array signal processing; Arrays; Interference; MIMO; Quantization (signal); CSI; LTE; feedback; massive MIMO;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing, Networking and Communications (ICNC), 2015 International Conference on

Conference_Location

Garden Grove, CA

Type

conf

DOI

10.1109/ICCNC.2015.7069313

Filename

7069313