An Integer Frequency Offset Estimator in OFDM Systems

被引：0
|
作者：
Hua, Jingyu [1 ,2 ]
Meng, Limin [1 ]
Li, Gang [1 ]
Wang, Dongming [2 ]
You, Xiaohu [2 ]
机构：
[1] Zhejiang Univ Technol, Coll Informat Engn, Hangzhou 310032, Zhejiang, Peoples R China
[2] Southeast Univ, Natl Commun Res Lab, Nanjing, Jiangsu, Peoples R China
来源：
2009 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP 2009) | 2009年
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper investigates an improved integer frequency offset (IFO) estimator based on guard band power ratio detection (PRD) in orthogonal frequency division multiplexing (OFDM) systems, which can work with large residual fractional frequency offsets (FFOs) and therefore large inter-carrier-interference (ICIs), resulting in excellent performance in very low signal-to-noise ratio (SNR) environments. Moreover, our algorithm does not need to design the special virtual subcarrier (VSC) distributions and hence is more spectrum efficient than conventional guard band power detection (GPD) method proposed by Huang. We verify the proposed algorithm by simulations and explicitly see the significant performance improvement. Thus the improved PRD method can be concurrently operated with the FFO adjustment.
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收藏
页码：204 / +
页数：3
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