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Improved Preamble-Aided Timing Estimation with pulse shaping filter for OFDM Systems

Author : Anshuman Pushp, Aditi Agrawal and A. K. Jaiswal

Pages : 3671-3675
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Orthogonal frequency division multiplexing (OFDM) is a multicarrier modulation technique in which the available spectrum band is divided into number of carriers and all of them are orthogonally modulated. It faces three main challenges i) high PAPR and ii) symbol timing offset iii) carrier frequency offset. In this paper we present a novel timing offset estimation method with pulse shaping filter for orthogonal frequency division multiplexing systems to avoid the ambiguity which occurs in Schmidt’s, Park and Adegbenga timing offset estimation method. The performance of the proposed scheme is presented in terms of mean-square error (MSE) and auto-correlation and cross-correlation metric for no channel distortion. Here we can see, the simulation result has smaller MSE than the other estimators. In this paper, furthermore ambiguity of unwanted peak of noise has been reduced.

Keywords: Orthogonal frequency division multiplexing, Carrier Frequency offset, Timing offset

Article published in International Journal of Current Engineering and Technology, Vol.5, No.6 (Dec-2015)


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