| 摘要 |
PROBLEM TO BE SOLVED: To reduce power consumption and a decoding processing period of time without greatly impairing decoding performance when a receiving environment is inferior in turbo decoding. SOLUTION: In decoding a received signal, a reception SIR estimating part 204 estimates a reception SIR (signal to interference ratio) of the received signal, a normalizer 202 sets an operation word long when the reception SIR is satisfactory, sets the operation word short when the reception SIR is not satisfactory and outputs the received signal as a reception sequence, and a turbo decoder 203 decodes the reception sequence, corrects errors with reliability information and the reception sequence predetermined times and outputs a decoding result. COPYRIGHT: (C)2005,JPO&NCIPI
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