Closed form BER expressions for BPSK OFDM systems with fractional timing offset and carrier frequency offset

In this paper, we consider the effect of fractional timing and carrier frequency offsets on the performance of BPSK-OFDM systems in additive white Gaussian noise (AWGN) and flat Rayleigh fading channels. Closed form bit error rate (BER) expressions for BPSK-OFDM systems impaired by timing and carrier frequency offsets are derived. Simulation results are provided to verify the accuracy of the theoretical analysis.