| 摘要 |
PROBLEM TO BE SOLVED: To accurately find a mean valueμand a variance V in a turbo- decoder. SOLUTION: A histogram totalizer 37a generates a histogram on the basis of (n) demodulated signals outputted from a demodulation part 7. A Gaussian distribution estimator 37b finds the mean valueμand the variance V of the amplitudes of received signals on the basis of the histogram generated in the histogram totalizer 37a. Thus, the averageμand the variance V of the amplitudes of the received signals can be found so that a probability distribution B1 in which the transmitted signal of a wireless transmitter 2 is '0' and a probability distribution B2 in which the transmitted signal of the wireless transmitter 2 is '1' can respectively become a normal distribution. COPYRIGHT: (C)2003,JPO
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