High Resolution CSI Feedback with Beam Space MIMO

被引：0
|
作者：
Zhang, Ruiqi [1 ]
Zhou, Yongxing [1 ]
Qu, Bingyu [1 ]
机构：
[1] Huawei Technol Co LTD, Dept Res, Beijing R&D Subdiv, Beijing, Peoples R China
来源：
2017 IEEE 28TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2017年
关键词：
Precoder; MIMO; Codebook; CSI;
D O I：
10.1109/PIMRC.2017.8292685
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In Frequency Division Duplexing (FDD) system with multiple antenna, user equipment (UE) usually reports channel state information (CSI) to assist base station (BS) to determine downlink data associated precoder. Conventional precoder for one data layer is represented by a DFT vector. However, with the increasing number of antenna ports, beam width becomes narrower. Beam formed by one DFT vector hardly captures energy of multi-paths spreading in a relative large angle range. In this paper, a new precoder is proposed, which is represented by linear combining a set of selected steering vectors. The numerical simulation shows the significant performance gain of the proposal over conventional precoder.
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页数：5
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