Patent ID: 7693429
Filing Date: 2010-04-06
Classification: H04B,H04L

Abstract:
1. A method of transmitting digital information over a dispersive optical channel, comprising the steps of: encoding the digital information into a series of data blocks, each block comprising a plurality of substantially orthogonal frequency domain subcarriers; dividing each data block into at least two frequency bands, each band comprising a plurality of contiguous subcarriers; performing a frequency-time transformation of each band to form a corresponding plurality of transformed bands, each transformed band comprising a sequence of time domain data samples; applying a time delay to at least one of the transformed bands relative to at least one other of the transformed bands; combining the transformed bands to produce an electrical signal waveform embodying the digital information; and modulating an optical source using the electrical signal waveform, to produce a corresponding optical signal for transmission over the dispersive optical channel.