Angle-of-arrival Based Beamforming for FDD Massive MIMO

被引：0
|
作者：
Zhang, Xing [1 ]
Tadrous, John [1 ]
Everett, Evan [1 ]
Xue, Feng [2 ]
Sabharwal, Ashutosh [1 ]
机构：
[1] Rice Univ, ECE Dept, Houston, TX 77251 USA
[2] Intel Corp, Santa Clara, CA 95051 USA
来源：
2015 49TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS | 2015年
基金：
美国国家科学基金会;
关键词：
D O I：
暂无
中图分类号：
TP31 [计算机软件];
学科分类号：
081202 ; 0835 ;
摘要：
A key challenge in FDD massive MIMO is the large overhead in CSI acquisition for closed-loop MIMO transmission. In this paper, we propose two novel types of angle-of-arrival (AoA) based beamforming schemes that harness the reciprocity of dominant AoA. Both schemes require CSI acquisition overhead that only scales with the number of served mobiles, not the number of base-station antennas. We analyze the performance of the proposed schemes both analytically and numerically. We show that both our proposed schemes lead to sum throughput that scales with the number of base-station antennas, and hybrid beamforming performs close to ideal zero-forcing beamforming.
引用
收藏
页码：704 / 708
页数：5
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