Title:
復号装置、通信装置および復号方法
Document Type and Number:
Japanese Patent JP4041445
Kind Code:
B2
Abstract:
A decoding apparatus includes a branch metric calculation unit 32 for sequentially Viterbi-decoding a plurality of data sequences over respective data lengths from the start at the same time, an ACS (Add-Compare-Select) circuit 35 and a stop register 44 for sequentially comparing likelihoods of respective data sequences which were Viterbi-decoded at the same time and stopping said simultaneous decoding means from decoding respective data sequences if it is determined based upon compared results if a likelihood of a certain data sequence is lower than a predetermined threshold value. As a result, normalization information is reflected on the judgment and a desired data sequence is judged by Viterbi-decoding any one of a plurality of data sequences with simple processing without useless processing.
Inventors:
Makoto Natori
Application Number:
JP2003328414A
Publication Date:
January 30, 2008
Filing Date:
September 19, 2003
Export Citation:
Assignee:
Sony Ericsson Mobile Communications Inc.
International Classes:
G06F11/10; H04L1/00; H03M13/41
Domestic Patent References:
| JP9074404A | ||||
| JP10302412A |
Attorney, Agent or Firm:
Yoshitsuno Kakuda
Hironobu Isoyama
Hironobu Isoyama