发明名称 |
Method and apparatus for decoding trellis code data |
摘要 |
<p>A method for decoding a trellis encoded stream dk by the use of either an 8 state maximum likelihood response decoding mode through a Gaussian channel or a 16 state partial response decoding mode through a partial response channel is disclosed. In response to a mode selection signal FENA, after passing off the trellis encoded stream for the 8 state mode and removing the influence of a segment synchronization signal from the trellis encoded stream for the 16 state mode, all branch metrics with different values in parallel for either the 8 or the 16 state mode. After selecting a predetermined number of branch metrics required for each state among all the branch metrics of either the 8 or the 16 state mode determined based on the FENA and finding the predetermined number of candidate path metrics and determining a survivor metric and a determination vector thereof, a decoded symbol is determined by tracing back for a decoding depth in response to the FENA based on the determination vector of each state.</p> |
申请公布号 |
GB9808574(D0) |
申请公布日期 |
1998.06.24 |
申请号 |
GB19980008574 |
申请日期 |
1998.04.22 |
申请人 |
DAEWOO ELECTRONICS CO., LTD |
发明人 |
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分类号 |
H04N19/00;H03M13/23;H03M13/25;H03M13/39;H04L1/00;H04N7/015;H04N19/102;H04N19/117;H04N19/134;H04N19/196;H04N19/42;H04N19/44;H04N19/46;H04N19/635;H04N19/70 |
主分类号 |
H04N19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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