Maximum likelihood carrier frequency offset estimation algorithm with adjustable frequency acquisition region

被引：3
|
作者：
Wang, Yung-Yi [1 ]
Huang, Chun-Wei [1 ]
Chen, Wei-Wei [1 ]
机构：
[1] Chang Gung Univ, Coll Engn, Sch Elect & Comp Engn, Dept Elect Engn, 259 Wen Hwa 1st Rd, Taoyuan 33302, Taiwan
来源：
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS | 2018年 / 355卷 / 05期
关键词：
INTERFERENCE SELF-CANCELLATION; OFDM SYSTEMS; CFO ESTIMATION; SCHEME;
D O I：
10.1016/j.jfranklin.2018.01.028
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This study presents a simple yet effective carrier frequency offset (CFO) estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems. At the transmitter, the proposed algorithm uses null subcarriers to render the OFDM signal periodic in the time domain. At the receiver, these periodic time samples become CFO-bearing signals, which can be adopted to develop the maximum likelihood (ML) CFO estimation algorithm accordingly. In addition to providing reliable and efficient CFO estimation, the proposed algorithm has an adjustable acquisition region linearly proportional to the order of the null subcarrier insertion scheme. (C) 2018 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2978 / 2985
页数：8
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