码重

  • 网络WEIGHT;Code weight
码重码重
  1. 从码重分布的角度分析了影响Turbo码性能的原因,介绍了Turbo码最优周期交织器的概念,为Turbo码提供了一种新的交织器设计方法。

    From the point of view of the distribution of code weight , the factors affecting the quality of Turbo codes are analyzed , the concepts of optimal periods interleaving implement for Turbo codes are introduced , and a new design of interleaving implement for Turbo codes is provided .

  2. 与码重匹配交织器的设计

    Design of Code Weight Matching Interleaver

  3. 基于低码重分布的概念,对Turbo码的不等保护作了进一步的探讨,给出了修改后的三种不等保护的方法。

    The unequal protections of Turbo codes are studied further more under the distributions of low weight codewords .

  4. 基于低码重分布的优化能量分配在3GPP交织器的实现

    Optimal energy allocation based on the distribution of low weight codewords for 3 GPP interleaver

  5. 一种支持OVSF码重分配的下行带宽分配算法

    An Allocation Algorithm for Downlink Bandwidth Supporting Reassignment of OVSF Codes

  6. 提出了交织器的码重分析、相关性分析和交织器迭代译码的适应性(IDS)三种性能判别和分析方法。

    Three criteria for evaluating performance of interleaver , ie. , the codeword weight decision , correlation analysis and iterative decoding suitability ( IDS ), is proposed .

  7. 低重分配概率的OVSF码重分配算法

    OVSF code reassignment algorithm with low reassignment probability

  8. 本文基于卷积码重传体制,应用分组码和卷积码串行级连码的概念,提出了一种串行级连结构的H-ARQ体制。

    In this thesis , a new H-ARQ scheme that uses progressively decodable serially concatenated codes for retransmission is proposed .

  9. 在3GPP交织器中使用了新的方法&基于低码重分布的优化能量分配法,它是将不同的能量分配给不同重量的码字。

    In the 3GPP interleaver , a new scheme for optimal energy allocation based on the distribution of low weight codewords which allocates energies to the different codewords that have different weights is employed .

  10. 基于低码重分布的一类随机交织器设计

    Design of random interleaver based on the distribution of low weights of turbo codes

  11. 给出了一个基于统计概念的码重分布算法一逐重量统计法。

    An algorithm of computing the distributions of the weight of codewords of Turbo codes , named statistics per weight , based on the statistics is presented .

  12. 当交织长度在数百范围内时,可以取得很精确的结果,尤其适合于计算低码重分布。

    When the interleaving length is not very long , such as no longer than 500 bits , it can bring out very accurate results , especially for the distributions of low weight codewords . 3 .

  13. 基于二次算术同余交织器的构造算法,提出了对线性同余交织器的改进,系统地分析了其参数的选择情况及对低码重分布的影响。

    Based on the quadratic congruence interleaver , a new algorithm which is improved on the linear congruence is advanced , the choices of its parameters are analyzed systematically and The new algorithm has the effects on the low weight codewords distribution .

  14. 汉字型姓名转换为首音码的重码智能处理

    Intelligent treatment of converting Chinese name to the first letter of spelling

  15. 在上述研究基础上本文又提出了一种实用的多码自适应重分配算法&MARC算法。

    Based on above research , this paper proposes an applied multi-code adaptive reassignment control ( MARC ) scheme .

  16. 利用单根循环码与重根循环码关系,确定出所有能由短码长的四元循环码构造的线性量子码。

    Using the relation of simple root cyclic codes and repeat root cyclic codes , the linear quantum codes that can be constructed from quaternary cyclic codes of short lengths are determined .

  17. 低重量种子序列对Turbo码低码重分布的影响

    Influence of Low-weight Seed Sequences on Low-Weight Distributions of Turbo Codes

  18. 基于最大距离分割(MDS)码的码重分布,得到了不完全译码器中发生译码错误和译码失败的概率。

    Based on the weight distribution of MDS codes , the probabilities of decoding error and decoding failure for incomplete decoder were obtained .

  19. 研究了二元等距码、等重等距码及其距离分布的Q-变换。

    Q-transform of distance distribution of binary equidistant codes and equidistant constant weight codes were studied .

  20. 通过使用Q-变换分布的性质,研究了二元等距码和等重等距码的最大码字数并得到2个新的上界,这些上界在某些情况下优于已知的结果。

    By employing the properties of Q-transform , the maximum number of codewords of binary equidistant codes and equidistant constant weight codes were studied and two upper bounds were then obtained . These two bounds are better than previous known results in certain cases .

  21. 分解法求Turbo码的低码重分布

    Decomposition method to calculate the distribution of low-weight codewords of Turbo codes

  22. Turbo码的低码重分布特性研究

    Research on the Distributions of Low-Weight Codewords of Turbo Codes

  23. 介绍了Turbo码的低码重分布及几种计算方法;

    The low weight distribution of turbo codes is illustrated , and some methods which calculate the low weight distribution are described .

  24. 本文主要对Turbo码的低码重分布及其应用方面进行了探讨研究。

    In this dissertation , a deep study is taken on the distributions of low weight codewords of Turbo codes and the applications .

  25. 由于Turbo码的低码重距离谱的分布特性是衡量Turbo码以及RCPT码性能的重要指标,文章对Turbo码的低码重距离谱的分布特性及其计算方法进行了研究。

    Then , the characteristics of low weight codewords which will impact on the performance of Turbo codes and RCPT codes is studied .

  26. 本文提出达到Johnson上界的等重码和最佳等重检错码存在的一些充分条件。

    This paper presents the sufficient conditions for the constant weight codes which can meet the Johnson 's upper bound and for the existence of the optimal constant weight error-detecting codes .

  27. 用概率的方法,分析了不同重量的种子序列经过交织后仍为种子序列的概率,讨论了低重量的种子自结尾输入序列对Turbo码的低码重分布的影响。

    Using the probability method , the probabilities of a seed sequence is still a seed sequence after inter-leaving are calculated . The influence of the low-weight seed sequences on the low weight distributions of Turbo codes is discussed .

  28. 非线性等距码和等距等重码的上界

    Upper Bounds for q-ary Nonlinear Equidistant Codes and Equidistant Codes with Constant Weight

  29. 基于特征码的网页去重

    Duplicated Webpages Deletion Based on Feature Code

  30. 主要的性能参数有码长、码重、自相关限、互相关限,以及码集构造的复杂性等。

    Their code length , code weight , auto-correlation , cross-correlation and complexity of constructing the codes , which are also important evaluation factors .