Apparatus and method for calibrating and compensating output signal distortion of smart antenna

end. The art that the invention defined in the claims It is a technique related to an apparatus and method for compensation by measuring the distortion of the smart antenna receiving signal. I. Technical Problems to be Solved by the Invention And a smart reference signal for the antenna is separately generated in order applied to measure the distortion of the signal outputted from the CDMA system to have minimal impact on system capacity, it has excellent performance, and minimize the additional device, the output signal readily determined by the phase and amplitude distortion, and this time is the phase and amplitude distortion of the signal to be output to the smart antenna array to collectively provide an apparatus and method for measurement. All. Solution subject matter of the invention The present invention is a smart antenna array technology is a code division multiple access output signal distortion measured in the system antenna and compensating apparatus is applied, the CDMA system generates a Walsh code extension of Walsh codes used in, and the code division multiple and a measurement signal generator that is synchronized to the Walsh code synchronization signal from the access system output, and code division multiple access signal generator for generating and outputting traffic signals to form a beam pattern in the terminal position, the error correction value and the code division multiple and a multiplier that multiplies the output signal of the connected signal generator output, and an addition unit for adding the output signal of the multiplication unit output and the measurement signal generator, and up-converting the added parts of the output signal to the radio band, the increased It outputs the converted signals to the antenna array and to said antenna array And a radio section that feeds back to extract some of the signal to be output, the and from the feedback signal measured error of each antenna array, to calculate a compensation value to compensate for this call error measurement and compensation value calculation for output to the multiplication It characterized in that it comprises. la. An important use of the invention Is used in the mobile communication system is a smart antenna technology. Smart antennas, signal distortion, measurements, compensation