Patent ID: 7746763
Filing Date: 2010-06-29
Classification: H04B

Abstract:
1. A method for transmitting data on a carrier current using a frequency band, the method comprising: subdividing said frequency band into N sub-bands, where N is an integer greater than or equal to two; implementing an Orthogonal Frequency Division Multiplexing (OFDM) technique on each of said sub-bands, said sub-bands being activated and allocated in dynamic manner; and performing calculation operations on each of the sub-bands; wherein the calculations performed on each of the sub-bands are independent of the calculations performed on the other sub-bands; wherein said subdividing of said frequency band comprises using a bank of filters suitable for subdividing said frequency band into N sub-bands; wherein said performing of calculation operations comprises synchronization that is carried out independently starting from each these sub-bands; and wherein said synchronization includes performing a Fourier transform of a first time sample to produce a first frequency sample, calculating a first angle of rotation for a first pilot carrier, calculating a second angle of rotation for a second pilot carrier, deducing a third angle of rotation for a middle carrier of the first frequency sample, and providing the third angle of rotation for a second time sample prior to performing a Fourier transform of the second sample, the second time sample being subsequent to the first time sample.