Blind Parameter Estimation of GFDM Signals Over Frequency-Selective Fading Channels

In this paper, we investigate parameter estimation for generalized frequency division multiplexing (GFDM) signals over frequency-selective fading channels. Based on the characteristics of the second-order cyclostationary statistics of GFDM signals, we develop algorithms to blindly estimate pure block duration, overall block duration, symbol duration, and number of subcarriers. The proposed algorithms are robust to timing, phase, and carrier frequency uncertainties and do not require any
a priori
knowledge of the received signal. Simulation results verify the feasibility of the proposed algorithms.