Patent ID: 8472500

Claim:
A method of demodulating at a receiver a plurality of symbols b k comprised in a received signal y(t), said receiver having knowledge of a time hopping sequence vector c of the transmitted signal, said method comprising the step of: generating a plurality of frequency-domain samples from the received signal y(t); the method being characterised in that it comprises the steps of: from said plurality of frequency-domain samples and said time hopping sequence vector c, applying a coarse estimation stage for identifying the beginning of a first complete symbol {circumflex over (τ)} 0 c in an acquisition interval; applying a stage for fine estimation of the time delay {tilde over (τ)} k of each symbol b k , wherein k denotes the k-th symbol, by searching a relative maximum at which a signal energy distribution exceeds a certain threshold P th ; from said fine estimation of the time delay {tilde over (τ)} k of each symbol b k , demodulating {circumflex over (b)} k said symbols b k .