Weighted cyclic prefix OFDM: PAPR analysis and performances comparison with DFT-precodingReport as inadecuate




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1 Direction générale de l-Armement DGA 2 GIPSA-CICS - CICS GIPSA-DIS - Département Images et Signal 3 Orange Labs R&D Rennes

Abstract : In this paper, we present a weighted cyclic prefix orthogonal frequency-division multiplexing WCP-OFDM transceiver as a generalization of traditional cyclic prefix CP-OFDM. In time-variant channels, this multicarrier transmission scheme may mitigate inter-channel interference ICI thanks to the use of non-rectangular pulse shapes. A precoding step may be required in order to reduce the peak-to-average power ratio PAPR at the transmitter output. For instance, a discrete Fourier transform DFT precoder leads to a single carrier transmission scheme with frequency domain equalization. We analyze the consequences of such a precoding, in terms of performances, in the context of a time-frequency selective channel.





Author: Damien Roque - Cyrille Siclet - Jean-Marc Brossier - Pierre Siohan -

Source: https://hal.archives-ouvertes.fr/



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