Improved CP-Based Carrier Frequency Offset Estimator for OFDM systems

Author

Xiao, Yue ; Lei, Xia ; Li, Shaoqian

Author_Institution

Nat. key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu

fYear

2007

fDate

21-25 Sept. 2007

Firstpage

209

Lastpage

211

Abstract

This paper presents an improved carrier frequency offset (CFO) estimator using cyclic prefix (CP) for orthogonal frequency division multiplexing (OFDM) systems. The basic principle is to detect the sign of the CFO value firstly, which will facilitate the extension of the estimation range of the estimator. It is shown by simulation results that the proposed estimator can achieve a double CFO estimation range compared to van de Beek´s method [5] and hence to improve the performance of fractional CFO estimation.

Keywords

OFDM modulation; channel estimation; OFDM systems; carrier frequency offset estimator; cyclic prefix; orthogonal frequency division multiplexing systems; 1f noise; Degradation; Fading; Frequency domain analysis; Frequency estimation; Interchannel interference; Intersymbol interference; Maximum likelihood detection; Maximum likelihood estimation; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1311-9

Type

conf

DOI

10.1109/WICOM.2007.59

Filename

4339834

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3487144