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    • 8. 发明授权
    • Partially-parrallel trellis decoder apparatus and method
    • 部分 - parrallel网格解码器设备和方法
    • US06487259B1
    • 2002-11-26
    • US09382170
    • 1999-08-24
    • David William Russo
    • David William Russo
    • H03D100
    • H04L25/03292
    • The partially-parallel trellis decoder with equalizer (360) uses multiple channel estimators (377, 379) but less than one independent channel estimator for each state. The state information set from the state with the best state metric as computed during the previous time period is used to update a primary channel estimator (377), and a state information set from the state with the second best state metric as computed during the previous time period is used to update a secondary channel estimator (379). Each updated channel estimator (377, 379) processes the corresponding state information set to calculate the possible transmitted symbols and their associated state metrics. Because there are fewer channel estimators than states, any unassigned states are processed using the primary channel estimator (377) but do not update the primary channel estimator (377).
    • 具有均衡器(360)的部分并行网格解码器使用多个信道估计器(377,397),但对于每个状态使用少于一个独立信道估计器。 使用从前一时间段计算的具有最佳状态度量的状态设置的状态信息来更新主信道估计器(377),并且从先前的计算中计算出的具有第二最佳状态度量的状态设置状态信息 使用时间段来更新辅助信道估计器(379)。 每个更新的信道估计器(377,397)处理相应的状态信息集合以计算可能发送的符号及其相关联的状态度量。 由于信道估计量少于状态,所以使用主信道估计器处理任何未分配状态(377),但不更新主信道估计器(377)。