Patent ID: 8441751

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 without increasing sampling frequency and to estimate multiple dibit pulse responses each derived using a different sampling phase, the dibit pulse estimation circuit including: a phase control circuit configured to control a phase offset angle sampling of the data acquisition circuit by changing a relative phase offset angle at which the data acquisition circuit samples symbols received from the data channel; an averaging circuit configured to average multiple sets of received samples to create an averaged sample sequence; a correlation circuit configured to correlate the averaged sample sequence with a reference pseudorandom bit sequence to generate a dibit pulse response estimate; and an interleaving circuit configured to interleave the dibit pulse response estimate with one or more other dibit pulse response estimates generated based on different phase offset angle samplings; and a compensation circuit coupled to an output of the data acquisition circuit and configured to compensate for changes in sampling phase of the data acquisition circuit.