In order to improve the relatively poor orthogonality and capacity for more users in OCDMA system, which uses the single polarity code, the differential check scheme on the receiver side of the spectrum encoding OCDMA system with the bipolarity codes is studied.
针对单极性码在光码分多址系统应用中存在正交性和用户容纳能力较差的缺点，对采用双极性地址码的光谱幅度编码系统中接收端采用差分检测的方案进行了研究。
It can transmit more information through re-transmit scheme and improve the performance of Error Correction Code by lowering rate of the ECC.
与普通的ARQ方案相比，该重传方案不单能够通过重传获得更多的信息，而且能够通过降低纠错码的码率来提高纠错码的性能。
For turbo code + channel interleaving scheme, the paper shows performance of optical wireless communication under various channel interleaving depth.
对于Turbo码+信道交织的差错控制方案，仿真分析了不同信道交织深度下的无线光通信系统性能，给出了特性曲线。
Secondly, this paper presents a scheme exploying the time and frequency domain parallel multi-user joint detector to cancel the multi-code interference for a frequency and time slective multi-path fading channel. The scheme exploys the time and freqnecy domain parallel multi-user detector to cancel the time and frequency domain multi-code interference respectively. Furthermore, a channel estimation algorithm with averaging in the time and frequency domain two-dimensional sliding window is designed in this scheme. This algorithm raises the accuracy of channel estimation effectively.
其次，针对频率选择性衰落和时间选择性衰落都存在的多径信道，本文提出了一种时频并行多用户检测器联合抵消多码干扰的方案，该方案采用时域并行多用户检测器抵消时域多码干扰T-MCI以及采用FMUD抵消F-MCI，另外该方案还设计了一种时频二维滑动窗平均信道估计算法，有效提高了信道估计精度。
Nodes on the XML tree will be assigned a unique code by the numbering scheme, and ancestor-descendant relationship could be directly told through the codes.
对XML树的编码，是指按照某种规则对XML树的每一个结点分配唯一的编码，目的是通过任意两个结点的编码，能够直接判断两个结点之间是否具有祖先后代关系。
To make effective use of path information and reduce the number of joint operations, the authors labeled each element or attribute in DTD with a binary prefix code, and introduced the DTD code into the numbering scheme for XML documents.
为了有效地利用文档类型定义中的路径信息、减少结构连接次数，使用二元前缀码对DTD的元素或属性编码，并将DTD编码引入到XML节点编码中。
A command transmission system is designed by use of return to-zero code and multiple correlation demodulation technique, the required antijamming unit circuits are given, and finally, the confidence of this design scheme of being able to increase data transmission rate under adverse condition is described experimentally.
设计一种利用归零码及多重相关解调技术的传输方案，并给出所需的几种抗干扰单元电路，最后结合实验说明此方案可提高不良环境下传输数据的置信
It encodes original test patterns in pseudo Gray code presentation to optimize the switching activity of circuit-under-test, and then result in the decrease of test power consumption. Experiments on 8-bit ripple carry adder and 16-bit carry look-ahead adder was performed and the analysis shows that the test scheme decreases the overall switching activities of CUT significantly; and the results of experimentation based on FPGA show that the test approach reduces dynamic power consumption by an average of 15.282% and 12.21% for the two adders respectively.
该方法对原测试矢量进行伪格雷码编码，优化被测电路的开关活动率，从而实现低功耗测试。8位行波进位加法器和16位超前进位加法器的实验分析表明，编码后的测试矢量显著地降低了被测电路的开关活动率；基于FPGA的实验结果表明，对于8位行波进位加法器，该方法将电路的平均动态功耗降低了15.282%，对于16位超前进位加法器，则降低了12.21%。
And the basic principles of coding and decoding of Turbo Codes are discussed, the MAP and Max-Log-MAP algorithms which are suitable for the Turbo Code are detailedly discussed. Then, because the interleaves technology has important influence in radio channel, the article provides the detailed scheme of implementation in WCDMA system. Besides providing a series of simulation illuminates the influence of interleave-length to the Turbo-code performance.
由于交织技术是为了抵抗无线信道的噪声以及衰落的影响而采取的时间分集技术，在WCDMA的编码过程中具有重要的作用，所以本文对交织技术在WCDMA系统中的应用也做了详细介绍，并且通过仿真说明了交织长度对Turbo码性能的影响。
The main research contents are as follows:1. Through massive calculation, analysis and comparison, sum up the similarities and differences between the special-shaped cross sections and rectangular cross sections in mechanical features, between reinforced concrete special-shaped columns and rectangular columns in load-bearing capacity, ductility performance and provide necessary basic concepts and data for further understanding the characteristics of the special-shaped columns; 2. Through massive elastic calculations and elasto-plastic analysis, under the preconditions of satisfying the code`s requirements for axial compression ratio, limit value of lateral displacement and load-bearing capacity of normal section, oblique section and beam-column joint, under circumstances of different intensity of earthquake, structure dead weight, sort of site and column grid bay dimension, the variation regularity of maximum suitable height of structure, and thus sum up the maximum suitable height of structure for code for the purpose of macro-control while deciding the design scheme; 3. Make a preliminary study on the stress feature of reinforced concrete special-shaped column and Z-shaped column of which the ratio of limb length to limb thickness is between 4~5, and the preliminary design method is suggested; 4. Through elato-plastic time history dynamic analysis of typical projects, check up the weak storey of the special-shaped column structure and yielding, breaking and collapse mechanism to satisfy the earthquake resistant requirement to buildings of remaining stand under strong earthquake; 5. Derive for project use simplified calculation formula of vibration period, suitable vibration period, suitable rigidity of special-shaped column structure through theoretical analysis, and provide an easy and practical method for deciding the structure scheme economically, safely and reasonably; 6. Based on the study achievements in theory and massive analysis and calculations of this paper, sum up the regularities of inner force, deformation of special-shaped column structure and seismic conceptual design, and thus the suggection of seismic design of special-shaped column structures is presented.
本文研究的主要内容如下：通过大量的计算、分析和对比，总结出异形截面与矩形截面在力学特性、钢筋混凝土异形截面柱与矩形截面柱在承载能力、延性性能等方面的异同，为深入了解异形截面柱的特点提供必要的基本概念和数据；通过大量的弹性及弹塑性计算分析，在满足规程对轴压比、侧移限值及正截面、斜截面、节点承载力抗震验算要求的前提下，在不同抗震设防烈度、结构自重、场地类别及柱网开间尺寸情况下最大适宜高度的变化规律，并在此基础上总结归纳出异形柱结构的最大适用高度规定，可用于规程，以便于在确定方案时起到宏观控制的作用；对肢长与肢厚比在4～5的钢筋混凝土异形截面柱及Z形柱的受力特点进行初步探讨，提出初步的设计方法；通过对典型工程的弹塑性动力时程分析，检验异形柱结构的薄弱层及屈服、破坏、倒塌机制，以达到建筑物大震不倒的抗震设防要求；通过理论分析，推导出异形柱结构自振周期，以及适宜自振周期、适宜刚度的工程实用简化计算公式，为经济、安全、合理地确定结构方案提供简便实用的方法；在本文理论分析、计算以及大量的研究成果基础上，总结归纳出异形柱结构内力、变形的规律及抗震概念设计内容，并在此基础上提出异形柱结构的抗震设计建议。
Finally, we present our simulation results under different encoding scheme of the space time block code.
最后，在空时区块码不同的正交矩阵之下，展现出我们的模拟结果。
The abstract information of entire software code is stored in a program database that is the conceptual scheme of the entire software, whereas the reuse component is a subscheme.
整个软件源代码的抽象信息存入程序数据库中，相当于软件的概念模式，重用构件相当于子模式。
Do the person most propbably that travel optimizes this piece to know, the major Seoer of Yunnan and Guilin generation is inobservant game is regular, become a link through considering a few children to seek a person, link these again later secretly cancel, will gain the weight of the website with this, I am not willing to exchange a link with them all the time, more distain their practice, before I take over a bill, there is the link that a Guilin travels on the station, used a tool to check, sure, also did not delete this link all the time so, a few examinations later also did not appear any circumstance, when the key word rank that discussing me with the friend in the evening often beats, the friend says this station link is too much, then while you're at it is moved open website of the other side, examined source code chronically, was stupefied immediately, check scheme comes down to look to everybody
做旅游这块优化的人想必都知道，云南和桂林一代的大部分seoer都不遵守游戏规则，经过顾一些小孩来找人做链接，之后又将这些链接偷偷撤销，以此来获得网站的权重，我一直都不愿意跟他们交换链接，更不屑他们的做法，在我接手一个单子之前，站上有一个桂林旅游的链接，用工具检查了下，没问题，所以也一直没有删除这个链接，后来的几次检查也没有出现任何的情况，晚上在跟朋友讨论我的关键字排名老是跳动的时候，朋友说这个站链接太多，于是就手动打开对方网站，习惯性的查看了源代码，立马惊呆了，截图下来给大家看看
The scheme is based on maximum channel gain in TDD model. It has relative more spatial redundancy information due to special encoding structure, so the performances of the scheme performs better than other full-diversity code schemes when concatenated with Turbo coding; all these are testified by simulation results.
该方案是在时分复用模式下基于最大信道增益发送而设计的：由于特殊的编码方案和结构，使得该方案含有相对多的空间冗余信息，从而级联Turbo码后其性能要明显好于其它满分集码；而且由于其最大化利用两个信道增益，避免了深衰落的影响，有时即使不级联信道编码，其性能也好于相应的满分集空时码，所有这些在仿真中也得到了很好的证实。
In order to improve the quality of sounding data and reduce the sounding balloon drifting error, China Meteorological Administration puts forward an expansion code scheme.
为了提高高空观测数据的质量，减小在探测过程中由于气球漂移造成探测资料在空间上的误差，中国气象局提出一套探空、测风报的空间、时间扩充编码方案。
This thesis has summarized the relevant part of current code and also in the international and domestic study or application of design theory about double-column combined foundation. A systematic analysis has been made of two kinds of calculation methods for the double-column combined shallow foundation—one is based on the national code and the other based on the ACI code, suggesting a hidden beam set up between the two columns and meanwhile a design-calculation method for hidden beam being discussed and a comparatively intact design-calculation method of double-column combined shallow foundation has been put forward on the basis of such comparison and analysis. Moreover, the author of the thesis has studied the calculation model of two design schemes for setting up or not setting up a hidden beam for the double-column pile cap, and also has discussed the relevant calculation method, and in combination with an engineering example for comparative analysis, thus drawing the conclusion that it is more reasonable to adopt the design scheme for setting up a continuous hidden beam under the two columns of double-column combined pile caps.
论文对现行规范相关内容及双柱联合基础设计理论的国内外研究与应用现状进行了综述；对双柱联合浅基础的两种计算方法即ACI 规范算法和基于我国规范的算法进行了系统的分析，提出应在双柱间设置暗梁，并对暗梁的设计计算方法进行了探讨；在对比分析的基础上提出了较为完整的双柱联合浅基础的设计计算方法；对双柱联合桩基承台设置暗梁和不设置暗梁的两种设计方案的计算模型进行了研究、讨论了相应的计算方法、并结合算例进行了对比分析，得出了在双柱联合桩基承台的双柱下设置通长暗梁的设计方案更为合理的结论。
This paper presents a realization scheme for expended hamming cyclic code, its characteristic is that the cyclic code and parity check bit are treated with separately both in coding and decoding, so the decode request to correct 1 error and find out 2 errors can be realized with quite simple electric circuits, and the design method is given out for the code and decode electric circuits.
文章给出了扩展汉民循环码的一种实现方案，它的特点是在编译码时都把循环码和奇偶校验位分开处理，使得能用比较简单的电路实现纠正1位错同时检测2位错的译码要求，并给出了编、译码电路的具体设计方法。
In order to evaluate this model, JANSIM (Java-based Active Network SIMulator) is designed and implemented, The creative result of this project are: an implementation scheme of function components of active network node is proposed based on which an active network prototype - ANSoft is implemented; a dispensing mechanism of active code is proposed which conquer the problems such as end-to-end delay, code consistency and replacement of memory; A pluggable security prototype is developed in the active network; An active capability is introduced to describe authorization policy; the decode-binding realizes the expansion capacity of the encryption methods in the system.
在此基础上取得的创新性研究成果主要有：提出了主动节点各功能组件的具体实现方案并在其基础上实现了原型系统ANSoft；提出了一种主动代码分发机制，解决了端端延迟，代码一致性和存储替换的问题；设计并实现了主动网络可扩展安全机制；提出了利用权能设计动态策略配置。
The C/A code and navigation ephemeris generated by this scheme are saved in the digital IF file.
本方案设计出的C/A码和导航星历被写入到数字中频文件中。
In order to shorten the PN code acquisition time the scheme based on the match filter is presented.
提出一种基于匹配滤波器的快速捕获算法，改善了在极低信噪比下的性能，降低了平均捕获时间。