Title:
ターボ復号器
Document Type and Number:
Japanese Patent JP3892872
Kind Code:
B2
Abstract:
An object of the present invention is to provide a turbo decoder that can decode demodulated soft decision data with more efficiency than conventionally. The turbo decoder according to the present invention receives a demodulated soft decision input signal and outputs a decoded signal block by block, each block being formed of multiple data units. The turbo decoder includes decoding means for outputting a decoded output signal and an extrinsic likelihood signal based on a data signal included in an input signal and a preliminary likelihood signal, specification means for specifying a data unit with respect to which no error is detected in error checking performed on the data units in a hard decision output signal, and replacement means for inputting a signal sequence, created by replacing the signal contents of the specified data unit with signal contents after the hard decision, to the decoding means as the input signal.
Inventors:
Lee Jifeng
Application Number:
JP2004570170A
Publication Date:
March 14, 2007
Filing Date:
March 31, 2003
Export Citation:
Assignee:
富士通株式会社
International Classes:
H03M13/29; H03M13/45; H03M13/47; H04L1/00; H04L27/06
Domestic Patent References:
| JP2000201085A | ||||
| JP2002232302A | ||||
| JP2002171175A | ||||
| JP2001230677A |
Attorney, Agent or Firm:
Tadahiko Ito
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