Patent ID: 7061994
Filing Date: 2006-06-13
Classification: H04L

Abstract:
1. A system for performing in-phase and quadrature phase signal imbalance compensation on an input in-phase signal I 1 and an input quadrature phase signal Q 1 to produce a processed in-phase signal I 2 and a processed quadrature phase signal Q 2 , the system comprising: a phase imbalance correction coefficient generation circuit for generating a phase imbalance correction coefficient x from a plurality of previously processed in-phase and quadrature phase signals, said previously processed in-phase and quadrature phase signals corresponding to transmitted symbol values from a symbol constellation including a plurality of different symbol values distributed around an I/Q origin, said transmitted symbol values being distributed symmetrically around said I/Q origin over time; an amplitude imbalance correction coefficient generation circuit for generating an amplitude imbalance correction coefficient K from at least some of said plurality of previously processed in-phase and quadrature phase signals; an imbalance compensation device having an input for receiving said received signals I