Patent ID: 8441752

Claim:
A receiving device, comprising: a data acquisition circuit configured to digitize symbol data received from a data channel; a dibit pulse estimation circuit coupled to an output of the data acquisition circuit and configured to estimate an oversampled dibit pulse response using symbol data sampled at substantially a symbol rate of the receiving device, the dibit pulse estimation circuit including: a correlation circuit configured to correlate one or more received sample sequences from the data acquisition circuit with a reference pseudorandom bit sequence to generate a first dibit pulse response estimate; an interleaving circuit configured to interleave the first dibit pulse response estimate with one or more other dibit pulse response estimates; and an averaging circuit configured to average the one or more received sample sequences from the data acquisition circuit to create a first averaged sample sequence, and the correlation circuit correlates the first averaged sample sequence with a copy of the reference pseudorandom bit sequence to generate the first dibit pulse response estimate; and a phase rotation circuit coupled to receive digitized symbol data from the output of the data acquisition circuit and configured to generate the oversampled dibit pulse response without increasing sampling frequency.