NDLI: Robust Blind Carrier Frequency Offset Estimation Algorithm for OFDM Systems

Content Provider	Springer Nature Link
Author	Jayaprakash, Arunprakash Reddy, G Ramachandra
Copyright Year	2016
Abstract	In this paper, a joint covariance power fitting and phase based blind estimation method for carrier frequency offset (CFO) is proposed for orthogonal frequency division multiplexing (OFDM) systems using constant modulus constellations. Based on the assumption that the channel varies slowly within two adjacent OFDM symbols, the influence of the channel on corresponding covariance values and phase of the two OFDM symbols will be the same. Utilizing this, a robust method is formulated based on covariance power fitting criterion and phase information between two nearby OFDM symbols. The mean square error and bit-error-rate performance of the proposed estimation method is compared with that of the prominent conventional estimation schemes under noisy multipath channels with high delay spreads and Doppler spreads. Based on Monte Carlo simulations, it is shown that the proposed method is robust under different channel conditions and provides more accurate CFO estimates.
Starting Page	777
Ending Page	791
Page Count	15
File Format	PDF
ISSN	09296212
Journal	Wireless Personal Communications
Volume Number	94
Issue Number	3
e-ISSN	1572834X
Language	English
Publisher	Springer US
Publisher Date	2016-09-03
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Blind estimation Carrier frequency offset Frequency selective Orthogonal frequency division multiplexing (OFDM) Communications Engineering, Networks Signal,Image and Speech Processing Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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