New schemes of carrier frequency offset estimation for DVB systems
Proceedings of the 3rd International Conference on Ubiquitous Information Management and Communication
New schemes of integer frequency offset estimation using pilots for DVB-T systems
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Pilot-assisted IFO estimation schemes for DVB-T systems
Proceedings of the 6th International Conference on Ubiquitous Information Management and Communication
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The main disadvantage of orthogonal frequency division multiplexing (OFDM) systems is its sensitivity to carrier frequency offset and timing offset. This paper proposes a simple way of improving the performance of the integer frequency offset (IFO) estimator in OFDM-based digital video broadcasting (DVB) system. By modifying the conventional maximum likelihood (ML) estimator to have multi-stage estimation strategy, two IFO estimators are derived. Simulations indicate that the proposed IFO estimators work robustly with reduced computational burden when compared to ML estimator