NDLI: Pilot Based Synchronization Strategy for a Coherent OFDM Receiver

Content Provider	IEEE Xplore Digital Library
Author	Henkel, M. Schroer, W.
Copyright Year	2007
Description	Author affiliation: Inst. fur Angewandte Forschung, Ulm (Henkel, M.; Schroer, W.)
Abstract	Receiver synchronization, in terms of time and frequency, is one of the most important tasks designing an OFDM (orthogonal frequency division multiplex) receiver for coherent detection. Any LO (local oscillator) misalignment of the receivers analog front-end against the transmitter carrier frequency leads to ICI (inter carrier interference) and degrades the overall SNR. This paper introduces a frequency synchronization approach for an OFDM receiver based on the broadcast standard DRM (digital radio mondiale). Based on the desired synchronization bandwidth the procedure of synchronization is separated into two steps. First a rough offset is estimated and a pre-correction is accomplished. In a second step the remaining offset is estimated. Both algorithms are implemented before the actual FFT in the OFDM receiver and doesn't depend on any timing or robustness mode information. Both methods are based either on frequency pilots (references) or the information of the guard interval (cyclic prefix).
Starting Page	1982
Ending Page	1986
File Size	261606
Page Count	5
File Format	PDF
ISBN	1424406587
ISSN	15253511
DOI	10.1109/WCNC.2007.371
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Frequency synchronization Receivers Frequency division multiplexing Local oscillators Radio transmitters Interference Degradation Radio broadcasting Digital Radio Mondiale
Content Type	Text
Resource Type	Article

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