Analysis of cyclic prefix length effect on ISI limitation in OFDM system over a Rayleigh-fading multipath

Sarah Zanafi, Noura Aknin
2021 International Journal of Power Electronics and Drive Systems (IJPEDS)  
<span>In this work, the influence of the cyclic prefix on the performance of the OFDM system is studied. We worked out an OFDM transceiver using a 16 QAM modulation scheme, a comparison of the BER for various lengths of the cyclic prefix has been achieved, and the influence of the noise introduced in the channel has been highlighted, for both a Gaussian and Rayleigh noise. The simulation was carried out on MATLAB where the curves of the BER for various lengths of the cyclic prefix are given and
more » ... refix are given and compared. We also adopted as a metric the QAM constellation to show the dispersion of the carriers as a consequence of the transmission channel, the mitigation of this effect by the CP is noticeable.</span>
doi:10.11591/ijece.v11i4.pp3114-3122 fatcat:znayerlwb5bwxgausv47p4bdrq