Patent ID: 6898239

Claim:
A method of detecting a sequence of information symbols from a first signal subjected to inter-symbol interference, wherein each symbol of the sequence of information symbols can adopt one of a plurality of different values, said method being performed as at least one signal processing path, the method comprising: setting, in each of said at least one signal processing path, a symbol in the sequence of information symbols to a value based on an intermediate signal derived from said first signal and a feedback signal generated on the basis of one or more previously set symbols; dividing a signal processing path, in which said intermediate signal for a given symbol exceeds a given threshold, into two separate signal processing paths, setting said given symbol to different values in each of said two separate signal processing paths; selecting, after setting at least one symbol, the sequence of information symbols from one of said at least one signal processing path as a detected sequence of information symbols; and adjusting said given threshold in accordance with an estimate of noise in said intermediate signal.