Patent ID: 6430148
Filing Date: 2002-08-06
Classification: H04L

Abstract:
An orthogonal frequency division modulation (OFDM) communication system comprising:a first OFDM device at a first station, the first OFDM device configured to (i) add a synchronisation signal to a plurality of data signals, (ii) generate a plurality of sub-carrier signals in response to modulating the synchronisation signal and the data signals, and (iii) generate a plurality of sub-carrier frequency signals in response to an inverse fast fourier transformation of the sub-carrier signals; and a second OFDM device at a second station, the second OFDM device configured to (i) generate the sub-carrier signals in response to a fast fourier transformation of the sub-carrier frequency signals, (ii) generate the synchronisation signal and the data signals in response to demodulating the sub-carrier signals, and (iii) synchronize a clock to the synchronisation signal.