Exact BER analysis of FRFT-OFDM system over frequency selective Rayleigh fading channel with CFO

Abstract

The bit error rate expression of the binary phase-shift keying modulation scheme has been derived in a frequency selective fading channel for the fractional Fourier transform (FRFT) based orthogonal frequency-division multiplexing (OFDM) system in the presence of carrier frequency offset (CFO). The performance of the FRFT based OFDM system has been found to be better than FFT-based OFDM at different values of FRFT angle parameter 'α'. © The Institution of Engineering and Technology 2013.