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Title:
DOWNLINK TRAINING SEQUENCE DESIGN METHOD OF FDD LARGE-SCALE MIMO SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/000752
Kind Code:
A1
Abstract:
The present invention provides a downlink channel estimation training sequence design method of frequency division duplex (FDD) large-scale multiple-input multiple-output (MIMO) system. In the system, a base station configured with large-scale multi-antenna array communicates with a single-antenna terminal user. The present invention performs continuous channel estimation utilizing spatio-temporal correlation between multi-antenna MIMO channel and on the basis of Kalman filtering. At each coherence time, the user performs Kalman filtering and prediction, obtains an estimated value of channel state information at the current coherence time, and gives a predicted value of the channel at the next coherence time. Statistical information of an intermediate variable is generated during the Kalman filtering and prediction, and the user feeds the necessary statistical information back to the base station via the uplink, so that the base station performs an optimal training sequence design. Simulation and analysis shows that, by the present solution, accuracy of channel estimation can be improved, while the time occupied by downlink training sequence of the system is reduced, thus improving the link throughout and system capacity.

Inventors:
WANG, Xiangyang (Si Pai Lou 2#, XuanwuNanjing, Jiangsu 6, 210096, CN)
ZHAO, Yang (Si Pai Lou 2#, XuanwuNanjing, Jiangsu 6, 210096, CN)
WANG, Dong (Si Pai Lou 2#, XuanwuNanjing, Jiangsu 6, 210096, CN)
YANG, Jingwen (Si Pai Lou 2#, XuanwuNanjing, Jiangsu 6, 210096, CN)
Application Number:
CN2016/085000
Publication Date:
January 05, 2017
Filing Date:
June 06, 2016
Export Citation:
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Assignee:
SOUTHEAST UNIVERSITY (Si Pai Lou 2#, XuanwuNanjing, Jiangsu 6, 210096, CN)
International Classes:
H04L25/02
Domestic Patent References:
2014-10-02
Foreign References:
CN105049383A2015-11-11
CN102916735A2013-02-06
Other References:
NOH SONG ET AL.: "Pilot Beam Pattern Design for Channel Estimation in Massive MIMO Systems", IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, vol. 8, no. 5, 30 May 2014 (2014-05-30), XP011558887, ISSN: 1932-4553
WANG DONG ET AL.: "Design of Downlink Training Sequences for FDD Massive MIMO systems", IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC, 12 June 2015 (2015-06-12), pages 4570 - 4575, XP055342520, ISSN: 1550-3607
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (12th FL.-B, No. 179 Zhongshan Road Gulo, Nanjing Jiangsu 5, 210005, CN)
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