Patent ID: 7558191

Claim:
A method of signal processing in a receiver configured to process signals at least at a sample level and a symbol level, comprising: sampling an incoming wireless signal; subjecting the sampled signal to discrete Fourier transform (DFT) processing, thereby to obtain a composite symbol-level signal; recovering a first block of information from the composite symbol-level signal; from the recovered first block of information, regenerating at the sample level a first estimate of that portion of the sampled incoming signal that is attributable to the first block of information; at the sample level, subtracting the first estimate from the sampled incoming signal, thereby to provide a second estimate of that portion of the sampled incoming signal that is attributable to a second block of information; subjecting the second estimate to DFT processing, thereby to obtain a further symbol-level signal; and recovering the second block of information from the further symbol-level signal.