Patent ID: 7664172

Claim:
A receiver system comprising: an analog pre-filter for analog filtering a symbol-information-carrying input analog signal, or a first intermediate analog signal generated from the input analog signal, to produce a filtered analog signal with reduced intersymbol interference; an analog-to-digital converter for converting the filtered analog signal, or a second intermediate analog signal generated from the filtered analog signal, into an initial digital signal; an equalizer comprising digital equalization circuitry that operates according to a transfer function H EQ (z) for equalizing the initial digital signal, or an intermediate digital signal generated from the initial digital signal, to produce an equalized digital signal as a stream of equalized digital values, transfer function H EQ (z) being given as: H EQ ⁡ ( z ) = c - 1 ⁢ z + c 0 + ∑ i = 1 M ⁢ c i ⁢ z - i where z is a time-related variable, i is a running integer, c i is an ith coefficient, M is a fixed integer greater than or equal to 1 whereby at least coefficients c −1 , c 0 , and c 1 differ from zero, coefficients c −1 and c 0 are fixed, and each coefficient c i is adaptively chosen for each value of integer i greater than or equal to 1; and and output decoder for converting the equalized digital values, or intermediate digital values generated from the equalized digital values, into a stream of symbols.