Patent ID: 7515630

Claim:
A system to recover in phase and quadrature phase data from a quadrature amplitude modulated (QAM) signal, comprising: an analog to digital converter (ADC) configured to sample the QAM signal to produce a digital signal; a first multiplier configured to multiply the digital signal by a first mathematical function to provide an in phase (I) signal; a second multiplier configured to multiply the digital signal by a second mathematical function to provide a quadrature phase (Q) signal; and an equalizer configured to correct for distortions in the I signal and the Q signal to provide the in phase data and the quadrature phase data, wherein the equalizer comprises: a feed forward equalizer (FFE) configured to correct for distortions in a left half of the I signal and in a left half of the Q signal, and a decision feedback equalizer (DFE) configured to correct for distortions in a right half of the I signal and in a right half of the Q signal, and a slicer configured to provide the in phase data and the quadrature phase data based upon an output of the FFE and the DFE.