Frequency Synchronization With Beamforming Network Optimization for Uplink Massive MIMO Systems

被引：8

作者：

Feng, Yunqi ^{[1
,2
]}

Zhang, Weile ^{[1
,2
]}

Ge, Yinghao ^{[1
,2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, MOE Key Lab Intelligent Networks & Network Secur, Xian 710049, Peoples R China

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2020年 / 69卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Carrier frequency offset (CFO); Massive MIMO; beamforming network optimization; WIRELESS;

D O I：

10.1109/TVT.2020.2969550

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 this correspondence, we develop a novel frequency synchronization scheme for multiuser orthogonal frequency division multiplexing (OFDM) uplink with massive uniform linear array (ULA) at base station (BS). With proper user scheduling strategy, the directions of arrival (DOAs) of all users are considered to be disjunct. Our proposed method performs multiuser interference (MUI) cancellation through beamforming network, after which the multiuser OFDM uplink model can be decomposed into a set of parallel single user models. Then, carrier frequency offset (CFO) estimation for each user can be performed individually. The beamforming network is further optimized to minimize the mean square error (MSE) of the CFO estimation. The provided numerical results validate the proposed studies.

引用

页码：3486 / 3490

页数：5

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