Patent ID: 9374754
Filing Date: 2016-06-21
CPC Classification: H04B,H04L,H04W,Y04S

Claim Text:
1. A method for synchronising a receiving device with a transmitting device using a synchronisation sequence that has a frequency spectrum comprising multiple peaks arranged in a pattern known to the receiving device, the method comprising: receiving the synchronisation sequence; dividing the received synchronisation sequence into a plurality of segments; performing a Fourier transform on each of the plurality of segments to obtain, in respect of each segment, a plurality of values representing the frequency content of that segment; determining a plurality of sets of candidate frequencies at which the multiple peaks might be arranged in the frequency spectrum of the received synchronisation sequence, each set of candidate frequencies being arranged in the known pattern; determining, for each candidate frequency set, an indication of a signal power contained in the received synchronisation sequence at the frequencies comprised in that candidate frequency set in dependence on the plurality of values representing the frequency content of the plurality of segments; and synchronising the receiving device with the transmitting device in dependence on those indications.