Title :
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
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;
Conference_Titel :
Computing, Networking and Communications (ICNC), 2015 International Conference on
Conference_Location :
Garden Grove, CA
DOI :
10.1109/ICCNC.2015.7069313
