会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明申请
    • METHOD AND APPARATUS FOR INTERLEAVING LOW DENSITY PARITY CHECK (LDPC) CODES OVER MOBILE SATELLITE CHANNELS
    • 用于在移动卫星信道上交换低密度奇偶校验(LDPC)码的方法和装置
    • US20140189463A1
    • 2014-07-03
    • US14149379
    • 2014-01-07
    • SIRIUS XM RADIO INC.
    • Carl ScarpaEdward Schell
    • H03M13/11H03M13/27
    • H03M13/1105H03M13/1102H03M13/2732H03M13/2746H03M13/2771H03M13/2792H04B7/1858H04L1/0057H04L1/0071
    • Systems, methods and apparatus are described to interleave LDPC coded data for reception over a mobile communications channel, such as, for example, a satellite channel. In exemplary embodiments of the present invention, a method for channel interleaving includes segmenting a large LDPC code block into smaller codewords, randomly shuffling the code segments of each codeword and then convolutionally interleaving the randomly shuffled code words. In exemplary embodiments of the present invention, such random shuffling can guarantee that no two consecutive input code segments will be closer than a defined minimum number of code segments at the output of the shuffler. In exemplary embodiments of the present invention, by keeping data in, for example, manageable sub-sections, accurate SNR estimations, which are needed for the best possible LDPC decoding performance, can be facilitated based on, for example, iterative bit decisions.
    • 描述了系统,方法和装置来交织用于通过诸如卫星信道的移动通信信道进行接收的LDPC编码数据。 在本发明的示例性实施例中,一种用于信道交织的方法包括将大型LDPC码块分割成较小的码字,随机混洗每个码字的码片段,然后对随机混洗码字进行卷积交织。 在本发明的示例性实施例中,这种随机混洗可以保证在洗牌器的输出处没有两个连续的输入代码段将比规定的最小数量的代码段更接近。 在本发明的示例性实施例中,通过将数据保存在例如可管理子部分中,可以基于例如迭代比特决定来促进针对最佳LDPC解码性能所需的精确SNR估计。
    • 7. 发明申请
    • Method and apparatus for improved perormance sliding window decoding
    • 改进性能滑动窗口解码的方法和装置
    • US20010044919A1
    • 2001-11-22
    • US09849656
    • 2001-05-04
    • Brian S. EdmonstonPaul K. Gray
    • H03M013/00
    • H03M13/3905H03M13/2746H03M13/2957H03M13/3972
    • A method and apparatus for improving the performance of decoder that uses a sliding window decoder is described. In accordance with one embodiment of the invention, receive samples are decoded by first processing continuously in a first direction and using overlapping windows in a second direction, and then by decoded continuously in the second direction and using overlapping windows in the first direction. Typically, the decoding steps correspond to subiterations in a decoding iteration of a turbo code or other iterative code. The entire decoding process typically involves multiple decoding iterations and therefore has particular application to turbo codes and as well as other codes designed for iterative decoding.
    • 描述了一种用于改善使用滑动窗口解码器的解码器的性能的方法和装置。 根据本发明的一个实施例,通过在第一方向上连续地进行第一处理并且使用第二方向上的重叠窗口,然后在第二方向上连续地解码并且使用第一方向上的重叠窗口来解码接收样本。 通常,解码步骤对应于turbo码或其他迭代码的解码迭代中的子标识。 整个解码过程通常涉及多次解码迭代,因此具有对turbo码的特定应用,以及设计用于迭代解码的其他代码。
    • 10. 发明授权
    • Prunable S-random interleavers
    • 可修复的S随机交织器
    • US07568145B2
    • 2009-07-28
    • US11106474
    • 2005-04-15
    • Libero DinoiSergio Benedetto
    • Libero DinoiSergio Benedetto
    • H03M13/00
    • H03M13/2789H03M13/2746H03M13/276H03M13/2771
    • A system, method and machine-readable medium for pruning an S-random interleaver starting with an interleaver permutation having N elements and alternating between invalidating the last element of the interleaver permutation and invalidating the last element of a corresponding inverse interleaver permutation until the interleaver permutation has K elements, K being less than N, the method being characterized by the use of a reference vector having N flags and comprising: storing a value in an element of the reference vector corresponding to the value of the each element invalidated in the interleaver permutation.
    • 一种用于以具有N个元素的交织器置换开始的S随机交织器的修剪的系统,方法和机器可读介质,并且在使交织器置换的最后一个元素无效并且使对应的逆交织器置换的最后一个元素无效之后交替,直到交织器置换 具有K个元素,K小于N,该方法的特征在于使用具有N个标志的参考向量,并且包括:将值存储在与在交织器置换中无效的每个元素的值相对应的参考向量的元素中 。