Patent ID: 6744821
Filing Date: 2004-06-01
Classification: H04L

Abstract:
A multicarrier receiver for receiving a sequence of cyclically extended multicarrier symbols, said multicarrier receiver comprising:a sliding Fourier transformer for executing a Fourier transform on parts of an extended multicarrier symbol, said parts having a length equal to the length of a non-extended multicarrier symbol, a first part starting from a first sample of said extended multicarrier symbol, and subsequent parts starting from subsequent samples of said extended multicarrier symbol; and a per-carrier frequency domain equaliser coupled to said sliding Fourier transformer, said per-carrier frequency domain equaliser comprising a plurality of tapped delay lines corresponding to carriers in said multicarrier symbol and coupled to respective outputs of said sliding Fourier transformer, at least one tapped delay line of said plurality of tapped delay lines comprising a plurality of taps which are determined so as to reduce the channel impulse response length thereby avoiding the need for a time domain equaliser.