查询词典 permuted cyclic code

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。

Any column of the matrix can be permuted randomly, and the permutation between columns should satisfy the form which is the automorphism group of the binary cyclic Turbo code generated by the feedback polynomial.

该矩阵的任意一列可采用随机交织方式，而列间交织方式必须是按由反馈多项式生成的循环码字集的自同构群构成。

Starting from the configuration of the optical prime code, a kind of key signature code for the optical code-division multiple access system, based on the linear congruence theory in the finite Galois field, the correlation properties of the basic prime code, the extended prime code and the modified prime code are mathematically analyzed, the distribution of cross-correlation values is given and the overlap area of "1"s in the case of periodically circularly shifting is indicated.

摘 要：围绕OCDMA系统的重要地址码类型--光素数地址码的结构模型，根据有限Galois域上的线性全等理论，系统分析了基本素数码、扩展素数码、修正素数码的互相关特性，指出码字中"1"位的重叠区域。

So good, read a book, look big the hornbook of 2 computer science departments, see programmer manual, see server knowledge, see a website run an environment, read code, read the code of others, change code, change the code of others, write code, write oneself code that think of, take paper, keep website structure, take a pen, keep database structure, take small easel, draw website structure to pursue, my sweat, I feel suddenly I bring into contact with a term that clinking ox compares, UE stylist.

那么好，看书，看大二计算机系的入门书，看程序员手册，看服务器知识，看网站运行环境，看代码，看别人的代码，改代码，改别人的代码，写代码，写自己的想到的代码，拿来纸，写网站结构，拿来笔，写数据库结构，拿来小画架，画网站结构图，我汗，我忽然觉得我又接触到了个无比牛比的词，UE设计师。

This kind of bar codes can be divided into achromatous function ink business card printing and membership card making bar code and non-ferrous function ink business card printing and membership card to make a bar code, the former is commonly used fluorescent ink and thermochromic ink, cyclometalated ink special ink to cards and membership cards produced by the bar code, this invisible bar codes in the business card printing and membership card must be used in making specific illumination, bar code recognition must be enclosed in the sensitive light source, this kind of bar code originally adelomorphic, and on functional inks business card printing and membership cards produced by the bar code is commonly used variable ink to cards and membership cards.

这种条码可以分为无色功能油墨制卡和会员卡制作条码和有色功能油墨制卡和会员卡制作条码，对于前者一般是用荧光油墨，热致变色油墨，磷光油墨等特种油墨来制卡和会员卡制作的条形码，这种隐形条码在制卡和会员卡制作中必须用特定的光照，在条形码识别时必须用相应的敏感光源，这种条码原先是隐形的，而对有色功能油墨制卡和会员卡制作的条码一般是用变色油墨来制卡和会员卡制作的。

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。

For k≥1, an isometry φ between codes over Zsubscript P(superscript k+1 and codes over Z(subscript P^2) is introduced and used to give a generalization of the Gray map φ: Z(superscript n subscript 4)→F(superscript 2n subscript 2). Furthermore, by means of this isometry, the concept of negacyclic codes is extended to codes over the ring Zsubscript P(superscript k+1. A characterization of these codes in terms of their images under φ is given. It is also shown that the generalized Gray map image of the 1-P(superscript k-cyclic code is a distance-invariant quasi-cyclic code.

文章引入了Z下标 P(上标 k+1码和Z(下标 P^2)码之间的等距同构φ(k≥1)；利用φ把Gray映射φ：Z(上标 n 下标 4)→F(上标 2n 下标 2)推广为φ：；而且利用φ，负循环码概念被推广到Z下标 P(上标 k+1码，得到了1-P(上标 k-循环码；依据等距同构φ，给出了这些码的表示；也证明了1-P(上标 k-循环码在推广的Gray映射下的像是距离不变的准循环码。

cyclic redundancy check code is a very important cyclic code,the coding and decoding methods are simple,easy to realize.it is strong to detect error,the probability of misjudging is nearly zero.it is a method with extremely high efficiency in controlling errors,which can fulfill the requirement of reliable information transmission in communication systems.it has got very extensive application in observing and controlling and data communication.this paper introduces the encoding and decoding principle of crc in detail,analyzes the feasibility of crc by dsp,and gives out the design proposal and flow chart according to the principle,which is very useful in applications.

摘 要：循环冗余校验码是一种重要的循环码，编码和解码方法简单，容易实现，检错能力强，误判概率几乎为零，是一种效率极高的差错控制方法，可以满足通信系统可靠传送信息的要求，在测控及数据通信中得到了非常广泛的应用。详细介绍了循环冗余校验的编解码原理，分析了用dsp实现crc的合理性，最后给出了根据校验原理实现的设计思想及流程图，具有一定的实用价值。

Following results have been obtained: a novel method of surface modification of transparent silicon rubber with plasma to adapt it to cell adherence and spread was developed, and a set of elastic matrix cell culture devices based on the method was developed; it is found that MSCs oriented 90 degrees to the applied cyclic strain field and aligned, the reaction of MSCs to the cyclic stretch is related to the loading regimen and aging of MSCs, cyclic strain may lead to differentiation of MSCs.

主要研究结果有：研究出利用等离子体对硅胶进行表面改性以利于细胞粘附和铺展的新方法，并基于此研制出了可动态加载的应变均匀的新型弹性基底细胞培养装置。发现MSC在受到交变拉伸加载后沿与受力垂直的方向排列的现象，该现象与加载的条件和MSC的老化程度有关，交变拉伸加载可能有促进MSC分化的趋势。

A cyclic dynamic magnetizing optomagnetic synchronous magnetic light testing method synchronously imposes a linear polarization cyclic laser narrow pulse train and a cyclic alternating magnetic field to a magnetic sample.

一种周期动态磁化的光-磁同步磁光测试方法，使用线偏振态的周期激光窄脉冲列和周期交变磁场同时作用在磁样品上。

It has to be computed by the host for the actual clock rate.

主控制器可以用来计算实际的时钟速率。

Let's see what you got.

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