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1. 发明授权

US6145114A Method of enhanced max-log-a posteriori probability processing 有权
标题翻译：增强最大对数后验概率处理的方法
公开(公告)号：US6145114A
公开(公告)日：2000-11-07
申请号：US134151
申请日：1998-08-14
申请人： Stewart Crozier , Andrew Hunt , John Lodge
发明人： Stewart Crozier , Andrew Hunt , John Lodge
IPC分类号： G11B20/18 , H03M13/27 , H03M13/29 , H03M13/39 , H03M13/45 , H03M13/00 , G06F11/00
CPC分类号： H03M13/3916 , G11B20/18 , G11B20/1866 , H03M13/2717 , H03M13/2721 , H03M13/29 , H03M13/2903 , H03M13/2906 , H03M13/2909 , H03M13/2918 , H03M13/2933 , H03M13/2945 , H03M13/3905 , H03M13/658
摘要： The invention comprises an enhancement to max-log-APP processing that significantly reduces performance degradation associated with introducing the "max" approximation into log-APP computations, while still maintaining lower computational complexity associated with max-log-APP processing. This enhancement is achieved by adjusting extrinsic information produced by a max-log-APP process where the magnitude of the extrinsic information is reduced, for example, by multiplying it with a scale factor between 0 and 1.
摘要翻译：本发明包括对max-log-APP处理的增强，其显着降低与将“最大”近似引入对数APP计算相关联的性能下降，同时仍然保持与max-log-APP处理相关联的更低的计算复杂度。该增强是通过调整由外部信息的幅度减小的max-log-APP处理产生的外部信息来实现的，例如通过将其与0和1之间的比例因子相乘来实现。

2. 发明授权

US6145111A High-performance low-complexity error-correcting codes 有权
标题翻译：高性能低复杂度纠错码
公开(公告)号：US6145111A
公开(公告)日：2000-11-07
申请号：US134152
申请日：1998-08-14
申请人： Stewart Crozier , Andrew Hunt , John Lodge
发明人： Stewart Crozier , Andrew Hunt , John Lodge
IPC分类号： G11B20/18 , H03M13/27 , H03M13/29 , H03M13/39 , H03M13/45
CPC分类号： H03M13/3916 , G11B20/18 , G11B20/1866 , H03M13/2717 , H03M13/2721 , H03M13/29 , H03M13/2903 , H03M13/2906 , H03M13/2909 , H03M13/2918 , H03M13/2933 , H03M13/2945 , H03M13/3905 , H03M13/658
摘要： A method of encoding data is described herein. According to the method, source data elements are coded using one or more product codes having a common component code. The resulting one or more primary product codewords consist of a plurality of first codewords of the common component code. One or more first sets of codewords of the common component code are assembled such that each of the first sets comprises two or more distinct first codewords forming part of a same primary product codeword. Each of the codewords of each of the first sets is codeword-mapped to a second codeword of the common component code using a one-to-one codeword-mapping. One or more second sets of second codewords are provided, where each second set corresponds to a first set of codewords. The codeword-mapping includes re-ordering, according to a known interleaving pattern, the symbols within a codeword. The codeword-mappings are such that if all of the codewords of a first set are from a same primary product codeword, then some codeword-mappings applied to the codewords of the first set are different, and if two or more repetitions of a same codeword are included in a single first set, then the codeword-mappings applied to those repetitions are different. Each set of second codewords is coded using a systematic code so as to generate a secondary product codeword for a product code having as component codes the common component code and the systematic code. Then, the primary product codewords and the non-systematic portion of the secondary product codewords are provided as encoded output data.
摘要翻译：本文描述了一种编码数据的方法。根据该方法，使用具有公共分量代码的一个或多个产品代码对源数据元素进行编码。所产生的一个或多个主要产品代码字由公共分量代码的多个第一代码字组成。组合公共分量代码的一个或多个第一组代码字，使得每个第一组包括形成相同主要产品代码字的一部分的两个或更多个不同的第一代码字。每个第一组的每个码字使用一对一码字映射码字映射到公共分量码的第二码字。提供了一个或多个第二组第二码字，其中每个第二集合对应于第一组码字。码字映射包括根据已知的交织模式重新排序码字内的符号。码字映射使得如果第一集合的所有码字都来自相同的主要产品码字，则应用于第一集合的码字的一些码字映射是不同的，并且如果两个或更多个相同码字的重复被包括在单个第一集合中，则应用于这些重复的码字映射是不同的。使用系统代码对每组第二码字进行编码，以便为具有共同分量代码和系统代码的分量代码的产品代码生成二次产品代码字。然后，作为编码输出数据提供副产品码字的主要产品码字和非系统部分。

3. 发明授权

US08352840B2 Event cleanup processing for improving the performance of sequence-based decoders 有权
标题翻译：事件清理处理，以提高基于序列的解码器的性能
公开(公告)号：US08352840B2
公开(公告)日：2013-01-08
申请号：US12411066
申请日：2009-03-25
申请人： Stewart Crozier , Kenneth Gracie
发明人： Stewart Crozier , Kenneth Gracie
IPC分类号： H03M13/00
CPC分类号： H04L1/0045 , H03M13/296 , H03M13/2975
摘要： The invention relates to improving the performance of sequence-based soft-output decoders using event cleanup processing, wherein combinations of potential error events are evaluated using an error detection code (EDC) to select events that produce a modified set of decisions that has no EDC detectable errors. The event cleanup method and associated event cleanup decoder enable to significantly improve the error rate performance of sequence-based decoders and/or significantly improve decoding efficiency compared to other known error cleanup methods.
摘要翻译：本发明涉及使用事件清除处理来提高基于序列的软输出解码器的性能，其中使用错误检测码（EDC）来评估潜在错误事件的组合，以选择产生不具有EDC的修改的一组决策的事件可检测的错误。与其他已知的错误清除方法相比，事件清除方法和相关联的事件清除解码器能够显着提高基于序列的解码器的错误率性能和/或显着提高解码效率。

4. 发明申请

US20090249165A1 Event Cleanup Processing For Improving The Performance Of Sequence-Based Decoders 有权
标题翻译：事件清理处理提高基于序列的解码器的性能
公开(公告)号：US20090249165A1
公开(公告)日：2009-10-01
申请号：US12411066
申请日：2009-03-25
申请人： Kenneth Gracie , Stewart Crozier
发明人： Kenneth Gracie , Stewart Crozier
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H04L1/0045 , H03M13/296 , H03M13/2975
摘要： The invention relates to improving the performance of sequence-based soft-output decoders using event cleanup processing, wherein combinations of potential error events are evaluated using an error detection code (EDC) to select events that produce a modified set of decisions that has no EDC detectable errors. The event cleanup method and associated event cleanup decoder enable to significantly improve the error rate performance of sequence-based decoders and/or significantly improve decoding efficiency compared to other known error cleanup methods.
摘要翻译：本发明涉及使用事件清除处理来提高基于序列的软输出解码器的性能，其中使用错误检测码（EDC）来评估潜在错误事件的组合，以选择产生不具有EDC的修改的一组决策的事件可检测的错误。与其他已知的错误清除方法相比，事件清除方法和相关联的事件清除解码器能够显着提高基于序列的解码器的错误率性能和/或显着提高解码效率。

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