IQ unbalanced calibration method and equipment of baseband signals in wireless communication receiving machine

The invention provides an IQ unbalanced calibration method and equipment of baseband signals in a wireless communication receiving machine. The method comprises the following steps that: the receiving machine receives radio frequency signals, and generates identical phase component path I signals and orthogonal component path Q signals through signal processing; a self correlation valve E(|I|2) of the path I signals, a self correlation value E(|Q|2) of the current path Q signals and a mutual correlation value E(IQ) of the path I signals and the path Q signals are obtained through calculation;carrying out four arithmetic operation on E(|I|2), E(|Q|2) and E(IQ); an estimated value of the current magnitude unbalanced calibration factor and an estimated value of the current phase unbalanced calibration factor are obtained through calculation; and the current path Q signals are calibrated according to the estimated values. The embodiment of the invention can reduce the operation quantity.