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    • 14. 发明授权
    • Viterbi decoding apparatus and Viterbi decoding method
    • 维特比解码装置和维特比解码方法
    • US07861146B2
    • 2010-12-28
    • US11597541
    • 2005-02-16
    • Kouya WatanabeTakehiro Kamada
    • Kouya WatanabeTakehiro Kamada
    • H03M13/41
    • H03M13/3994H03M13/4176
    • In a Viterbi decoding apparatus, deterioration in error correcting capability before and after a terminated code is controlled. A termination timing detection unit (103) detects a termination timing of a Viterbi code, a compulsion generation unit (105) generates a compulsion value so as to pass a specific path at the termination timing and timings before and after the termination timing, and the compulsion value is set on a traceback pointer (106). Therefore, even when the decoding state of a code before termination is degraded, decoding of a next code can be carried out without being affected by the degradation, thereby improving error correcting capability.
    • 在维特比解码装置中,控制终止码之前和之后的纠错能力的恶化。 终端定时检测单元(103)检测维特比码的终止定时,强制生成单元(105)产生强制值,以便在终止定时和终止定时之前和之后的定时通过特定路径,并且 强制值设置在回溯指针(106)上。 因此,即使当终止之前的代码的解码状态劣化时,也可以不影响劣化地执行下一个代码的解码,从而提高纠错能力。