| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for controlling a transmitter part of a wireless transceiver, in order to correct for the output fluctuations or the nonlinearity of an amplifier. SOLUTION: The transmitter part is provided with an IQ modulator, and a wireless receiver is provided with a receiver part provided with an IQ demodulator. The wireless transceiver is uses exclusively for the purpose of transmitting a modulation information signal via an air interface. The method of this invention includes a step, where an IQ modulation vector that is obtained by the IQ modulator and relates to part of an information signal is stored, a step where part of the information signal is in crossing with a pseudo-wireless interface between the transmitter part and the receiver part to be looped to the receiver part, a step where comparing the IQ modulation vector with an IQ demodulation vector obtained by demodulating the part of the information signal with the IQ demodulator estimates an error vector, and a step where a parameter of the transmitter part is corrected, on the basis of the error vector. |
