Blind Identification of OFDM Signal in Rayleigh Channels

Abstract

This paper proposes an algorithm for the blind identification of OFDM (orthogonal frequency division multiplexing) signal from the single-carrier modulated signals in the Rayleigh channels. The algorithm doesn't need any prior knowledge of the signals, such as SNR (signal to noise ratio), symbol rate and carrier frequency, and deals with the bandpass signals directly avoiding the carrier recovering process. Simulation results prove the feasibility and show that an over 95% correct classification rate could be reached when the SNR is above 0 dB