| 摘要 |
PURPOSE:To realize the stable demodulation device of high performance by measuring difference between the expected value vector of an ideal state or a reference signal vector end an actual received vector, and deciding a receiving state according to the magnitude of this difference, and adjusting a feedback coefficient to a carrier wave reproducing device. CONSTITUTION:A received signal is multiplied by a receiving side carrier wave by a multiplier 31, and a high frequency noise is removed by a low pass filter 32. This signal is corrected in the difference between a carrier wave and the receiving side carrier wave by the carrier wave reproducing device 34. Corrected data is inputted to a phase determining device 33, and the phase of the received signal is determined. Besides, at that time, a differential vector between the ideal reference signal and the received signal is calculated, and is inputted to a feedback coefficient adjusting device 35. Here, the feedback coefficient is adjusted from the differential vector, and the corrected differential vector is inputted to the carrier wave reproducing device 34. |
