发明授权
US6094741A Viterbi decoding apparatus, method for controlling slip state of
convolutional code in viterbi decoding apparatus, and slip state
control apparatus
失效
维特比解码装置，维特比解码装置中的卷积码的滑动状态的控制方法以及滑动状态控制装置
- 专利标题： Viterbi decoding apparatus, method for controlling slip state of convolutional code in viterbi decoding apparatus, and slip state control apparatus
- 专利标题（中）： 维特比解码装置，维特比解码装置中的卷积码的滑动状态的控制方法以及滑动状态控制装置
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申请号： US1808申请日： 1997-12-31
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公开(公告)号： US6094741A公开(公告)日： 2000-07-25
- 发明人: Masayuki Koyama , Michiru Hori
- 申请人： Masayuki Koyama , Michiru Hori
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 主分类号： G06F11/10
- IPC分类号： G06F11/10 ; H03M13/23 ; H03M13/41 ; G06F11/00
摘要：
In a viterbi decoding apparatus, a depuncture circuit is always synchronized with the input of a correct convolutional code irrespective of the degree of noise in the transmission path of the convolutional code. A comparator (4) makes a comparison of error numbers of slip states 1 through N stored in registers (R1) through (RN) of the register group (2), respectively, to detect a register (Rk) (k=either of 1 through N) storing the minimum error number thereby to output a minimum slip state (MINSLIP) indicating the slip state k to a slip state determination portion (5). The slip state determination portion (5) determines the minimum slip state (MINSLIP) to be a determined slip state (DSLIP) when the minimum slip state (MINSLIP) continuously indicates the same slip state M times.
公开/授权文献
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