A simplified compensation matrix is set up for the compensation of phase errors between the I and the Q component in data transmission systems with quadrature modulation or demodulation. This simplified compensation matrix permits a previously determined phase error Δφ to be used as the basis for replacing...http://www.google.com/patents/US7164327?utm_source=gb-gplus-sharePatent US7164327 - Compensation of the IQ phase asymmetry in quadrature modulation and demodulation methods