Patent ID: 6950480

Claim:
A method for balancing in-phase (I) and quadrature phase (Q) signals in a signal receiver, comprising: resolving an incoming signal into said I and Q signals; computing fixed correction coefficients from said I and Q signals for a certain time period of said incoming signal; after said certain time period, correcting I/Q gain and I/Q phase of said I and Q signals with said correction coefficients for providing corrected said I and Q signals; and wherein: the step of computing fixed correction coefficients includes computing first and second correction coefficients using a finite number of indexed I values for said I signal and said finite number of indexed Q values for said Q signal; where a first term includes a cross correlation of said I values and said Q values; a second term includes an autocorrelation of said Q values; a third term includes said first term divided by said second term; a fourth term includes a sum of absolute values of said Q values; a fifth term includes a sum of absolute values of difference values, said difference values including said I values minus product values, said product values including said Q value times said third term; and said first correction coefficient includes said fourth term divided by said fifth term.