A two-stage approach to estimate CFO and channel with one-bit ADCs

被引：3
作者：
Zhu, Jiang [1 ]
Cao, Hangting [1 ]
Xu, Zhiwei [1 ]
机构：
[1] Zhejiang Univ, Ocean Coll, Zhoushan, Peoples R China
来源：
SIGNAL PROCESSING | 2020年 / 168卷
关键词：
CFO; Channel estimation; Millimeter wave system; One-bit quantization; MIMO SYSTEMS;
D O I：
10.1016/j.sigpro.2019.107336
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 paper, a two-stage approach is proposed to estimate the carrier frequency offset (CFO) and channel with one-bit analog-to-digital converters (ADCs). Firstly, a simple metric which is only a function of the CFO is proposed, and the CFO is estimated via solving the one-dimensional optimization problem. Secondly, the generalized approximate message passing (GAMP) algorithm combined with expectation maximization (EM) method is utilized to estimate the channel. In order to provide a benchmark of our proposed algorithm in terms of the CFO estimation, the corresponding Cramer-Rao bound (CRB) is derived. Furthermore, substantial numerical results are conducted to demonstrate the effectiveness of the proposed approach when applied to mmWave channel. (C) 2019 Elsevier B.V. All rights reserved.
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页数：8
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