| 摘要 |
PROBLEM TO BE SOLVED: To compensate the delayed wave distortion and to improve the demodulation accuracy by using a main delayed wave fusion demodulation means to estimate a transmission symbol, that compensates the delayed wave distortion via a sampling series by means of the diversity processing. SOLUTION: A sampling phase (clock signal) outputted from a frame synchronization part 20 is inputted to a main wave sampling processing part 40A. This sampling phase is also delayed at a delay part 30, in response to the delay value given from a delay value estimation part 10 and supplied to a delayed wave sampling processing part 40B. Since the delay processing applies the addition processing according to the notation method of the sampling phase, the part 30 is shown in the notation of an adder. Then a diversity processing part 50 applies the diversity processing prior to demodulation to the receiving signal series that is sampled in each sampling phase of both main and delayed waves of the receiving signal, based on the estimated delay value. As a result, the compensation capability is improved to the delayed wave of a digital demodulator. |
