Blind synchronisation for OFDM

Abstract

A blind synchronisation method for an OFDM system operating over a wireless frequency selective channel is presented. There are two restrictions: (i) the constellation on each subcarrier must have points equally spaced in phase and (ii) the length of the guard interval must be chosen from a subset of allowed values. The frequency offset acquisition range is ~±1/8 of the total OFDM symbol bandwidth.