NDLI: Modified guard band power detection methods for OFDM frequency offset recovery

Content Provider	IEEE Xplore Digital Library
Author	Yen-Ju Huang Shyue-Win Wei
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. Eng., Nat. Chi-Nan Univ., Puli, Taiwan (Yen-Ju Huang; Shyue-Win Wei)
Abstract	Fast and less complexity of modified guard band power detection (GPD) methods for orthogonal frequency division multiplexing (OFDM) coarse carrier offset estimation are presented. Conventional GPD have to be operated after the fine carrier offset recovery. The performance of GPD estimation may be significant degraded due to the induced interchannel interference (ICI) if fine carrier offset is not zero. In the paper, we first show that the accuracy of GPD estimation can be significant improved based on a simple concept of power average. Furthermore, according to the similar idea of reference symbol power adjustment (RPA), two general patterns of subcarrier power adjustment are presented to improve the estimation performance under nonzero fine frequency offset. Based on the simulation results of four COST 207 fading channel models, it is illustrated that the presented modified GPD methods can be operated independent of the fine carrier offset adjustment.
Starting Page	2277
Ending Page	2281
File Size	388417
Page Count	5
File Format	PDF
ISBN	0780379543
ISSN	10903038
DOI	10.1109/VETECF.2003.1285935
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency estimation OFDM modulation Frequency synchronization Maximum likelihood estimation Interchannel interference Mathematical model Fading Bit error rate Wideband Wireless LAN
Content Type	Text
Resource Type	Article

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