DocumentCode :
2015169
Title :
Achievability of the channel reciprocity and its benefit in TDD system
Author :
Shi, Zhihua ; Wang, Qixing ; Jin, Jing ; Jiang, Dajie ; Liu, Guangyi
Author_Institution :
China Mobile Res. Instn., Beijing, China
fYear :
2010
fDate :
25-27 Aug. 2010
Firstpage :
1
Lastpage :
4
Abstract :
For the shared frequency band between uplink and downlink, the channel reciprocity has been regarded as the most important advantage of a TDD system, in which the eNB can obtain the downlink channel state information (CSI) based on the uplink channel estimation, and thus perform advanced multi-antenna technologies to enhance the downlink transmission in TD-LTE/TD-LTE-Advanced systems. In this paper, the achievability of the TDD channel reciprocity from the product implementation point of view is analyzed and some measurement results of the hardware response difference before and after the antenna calibration have been shown to verify the achievability. Based on the channel reciprocity of TDD system, the performance of Single-User and Multiple-User Beamforming (SU/MU-BF) and Coordinated Multipoint Transmission (CoMP) have been enhanced significantly.
Keywords :
Long Term Evolution; antenna arrays; array signal processing; channel estimation; time division multiplexing; TD-LTE-advanced systems; TDD channel reciprocity; channel reciprocity achievability; coordinated multipoint transmission; downlink channel state information; downlink transmission; hardware response; multiantenna technology; multiple user beamforming; single user beamforming; uplink channel estimation; Channel models; Shadow mapping; Synchronization; Variable speed drives; Wireless communication; Channel reciprocity; CoMP; MU-BF; SU-BF;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Networking in China (CHINACOM), 2010 5th International ICST Conference on
Conference_Location :
Beijing
Print_ISBN :
973-963-9799-97-4
Type :
conf
Filename :
5684786
Link To Document :
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