NDLI: Joint symbol, frame, and carrier synchronization for Eureka 147 DAB system

Content Provider	IEEE Xplore Digital Library
Author	Chorng-Ren Sheu Yung-Liang Huang Chia-Chi Huang
Copyright Year	1997
Description	Author affiliation: Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan (Chorng-Ren Sheu)
Abstract	We present a joint symbol, frame, and carrier synchronization method for an OFDM signal in this paper. Symbol timing is determined first by detecting an abrupt phase change in the autocorrelation of the last quarter (e.g. Eureka 147 DAB) useful symbol and its cyclic extension in the guard interval. Frequency offset of fractional carrier spacing can be estimated from the phase angle of this autocorrelation. Coarse frame synchronization or null symbol detection can also be achieved through this information. Frequency offset of integral carrier spacing and finer frame synchronizations are determined by convolution of a received phase reference symbol and several locally generated but frequency shifted phase reference symbols. Our simulation results show that this symbol timing estimation method is less sensitive to multipath fading and the frequency offset estimation is more accurate in mobile radio channels. We also show that the algorithm is robust in both AWGN and two-path fading channels for SNR down to about 8 dB.
Starting Page	693
Ending Page	697
File Size	418814
Page Count	5
File Format	PDF
ISBN	0780337778
ISSN	10918442
DOI	10.1109/ICUPC.1997.627253
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency estimation Frequency synchronization Timing Autocorrelation Fading OFDM Phase detection Phase estimation Convolution Land mobile radio
Content Type	Text
Resource Type	Article

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