码字

词组短语

code word

与码字相关的网络例句 [注：此内容来源于网络，仅供参考]

The three key techniques of basic VQ are codebook design, codeword search and codeword index assignment.

矢量量化的关键技术是码书设计、码字搜索和码字索引分配。

If is cyclic, then for every codeword the word is also a codeword.

必要条件：如果是循环码，那么仍然是码字，故线性码是理想。a是多项式，码字也看成是多项式。

As a result, LS-OOC based on orthogonal Latin square has been acquired. The large cardinality of LS-OOC is beneficial to synchronous OCDMA system.

研究了有限域上的Latin矩阵与OOC码字的联系，设计出基于正交Latin方阵的LS-OOC码字，自相关旁辦和互相关最大值都为1，非常符合OCDMA通信技术对地址码的要求。

In the proposed algorithm, firstly the Hadamard transform was applied to all the codewords in the codebook and the input vector. Then the initial match codeword was selected from the codeword whose norm was nearest to the norm of input vector on Hadamard transform. Furthermore, the triangle inequalities with multiple control vectors and the two elimination criteria were utilized to reject mismatch codewords. Finally, the best-match codeword to the input vector was found.

该算法首先计算出每个码字和输入矢量的哈德码变换，然后为输入矢量选取范数距离最近的初始匹配码字，利用多控制点的三角不等式和两条有效的码字排除准则，把不匹配的码字排除，最后选取与输入矢量最匹配的码字。

It has settled hidden markov model a dominant position in the area of speech acoustic and linguistic modeling that more 30 years application and development in speech recognition.

本文提出了矢量量化中初始码本设计应该遵循的准则，即训练矢量空间中初始码字的分布应该使码字聚类形成的胞腔在总畸变上而不是在空间体积上尽可能均衡。

At last, By using the factorization properties of cyclotomic polynmials on finite fields and the construction characteristic of cyclic codes, we present the relation of the period distribution of cyclic codes and the period distribution of their dual codes, establish the explicit formula for the number of the codewords without inner-period of the cyclic codes and their dual codes, find the method for computing the dimension and the period distribution of narrow-sense primitive BCH codes,and study the inverse question of period distribution of cyclic codes.

最后，利用有限域上分圆多项式的分解特性和循环码的构造特点，揭示了循环码的周期分布与其对偶码周期分布之间的内在联系，确定了一般循环码及其对偶码内无内周期码字的精确计数公式，决定了狭义本原BCH码的维数与周期分布，讨论了循环码周期分布的反问题。

Before the search process, all codewords in the codebook are Hadamard-transformed and sorted in the ascending order of their first elements.

在编码前，该算法预先计算每个码字的哈德码变换，然后根据各码字哈德码变换的第一维系数大小的升序排列对码字进行排序。

This module is not only suit for decoding a concatenated code with non RSCs as its constituent codes, but also it can provide soft information output of both codeword and information bits, so it can be applied to decoding a Turbo code and joint detection and decoding. Taking into consideration serial and parallel concatenated Turbo code, the author proposes a combined code, with 2 outer codes and 2 inner cods as its constituent codes, i.e., 2×2 Woven code.

本文的第三章研究编码技术，在前人研究成果的基础上，为了模块化地对此级联码进行迭代译码，提出了一种模块化的软输入软输出四端口处理模块，此模块可用来处理非RSC卷积码为子码的级联码，并且可以提供码字和信息比特的软信息输出，是一种模块化很强的处理模块，可用于传统的Turbo码的迭代译码，尤其在迭代均衡和迭代检测的系统中并把它运用到B3G的系统设计中。

To the question of the underuse of the search range and sequence in traditional codeword search algorithms, four characteristic values are introduced in the proposed algorithm with adaptive search range and sequence. Test results show that the proposed algorithm can significantly improve the search efficiency with a little extra distortion.

针对传统码字搜索不注重搜索范围和顺序的缺点，本文通过引入四个特征值，提出自适应搜索范围及顺序的快速码字搜索算法，实验表明在引入少量额外失真的条件下该算法可以大大提高码字搜索效率。

When code stream is passing through the decoder for variable length code, first, prefix analyzer is utilized to find packet information so as to obtain length of current code and pseudo base address; then, four least significant bits of the code are added to pseudo base address through accumulator so as to obtain address of the code in code table.

码流经过可变长码解码器时，首先使用前缀分析器查找分组信息，得到当前码字的长度和伪基础地址，然后使用累加器把这个码字的最低4位和伪基础地址相加，获得该码字在码表中的地址，从而获得解码信息，完成解码。

与码字相关的网络解释 [注：此内容来源于网络，仅供参考]

codebook：码书

在每个胞腔R,中我们再找到一个代表元Yi,我们称所有这些代表元组成的集合C=( )为码书(Codebook). 这些代表元也称为码字(Codeword)集合1= (1,2,..., M}称为码字的索引集合.

Codeword：码字

...学中,[[编码]]有更特定的意义:它意指以[[码字]](codeword)取代特定的[[明文]]. 例如,以『苹果派』(apple pie)... ...[个人帐户]][[通行码|通行码]] (password)也常被以密码代称,

Codeword：代码字 电码字

codeword 代码字 | codeword 代码字 电码字 | codewordlocatorpolynomial 码字定位多项式

codeword searching：码字搜索

数据库搜索:database searching | 码字搜索:codeword searching | 网络搜索:Internet searching

codeword search：码字搜索

单纯形法:Pattern Search | 码字搜索:codeword search | 树型搜索:Tree search

fraudulent codeword：伪造码字

系统破坏者 system saboteur | 伪造码字 fraudulent codeword | 阈下信道 subliminal channel

codon：码字

codimer 共二聚体 | codon 码字 | coefficient 系数

element synchronism：码元同步

码速率 bit rate | 码元同步 element synchronism | 码字 code word

Transcoder TC：码形变换器

码激励线性预测编码 Code-Excited LPC CLPC | 码形变换器 Transcoder TC | 码字,码片 Code

convolutional code：回旋码

前向纠错中包含非常多的种类,如区块码(Block code)、回旋码(convolutional code)、涡轮码(Turbo code)、低集成度机偶校验证编码(LDPC Code)等等. 本文将对简介这些编码,由系统集成设计的角度及芯片实践的角度分别予以探讨,并以作者的实践经验提出解决的方案. [关键词]信道编码 码字 分集 衰落 低密度奇偶校验(LDPC)编码 变换