Title:
TURBO-DECODER
Document Type and Number:
Japanese Patent JP3733901
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately find a mean value μ and 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 value μ and the variance V of the amplitudes of received signals on the basis of the histogram generated in the histogram totalizer 37a. Thus, the average μ and 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.
Inventors:
Sadahiro Terasawa
Application Number:
JP2001389305A
Publication Date:
January 11, 2006
Filing Date:
December 21, 2001
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G06F11/10; H03M13/29; H03M13/45; H04L1/00; (IPC1-7): H03M13/29; G06F11/10; H03M13/45; H04L1/00
Domestic Patent References:
| JP2001077704A |
Foreign References:
| WO2001022598A1 |
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura
Fumihiro Mizuno
Takahiro Miura
Fumihiro Mizuno
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