查询词典 digital coding

Information theory, channel coding theory and their applications to communication systems and digital recording systems

信息论；编码调制技术及其在通信系统中的应用；代数编码理论及应用等

ABSTRACT Digital video coding is one of the key technologies of multimedia communication.

数字视频压缩编码技术是实现多媒体通信的关键技术之一。

We design a project for digital-coding emission and realize it by technology of FPGA on one circuit board of the fore-end part of BMUS.

该方案实现了脉冲回波法B超前端的部分数字化，符合目前B超界数字化、电脑化的趋势，有一定的创新。

This paper consists of six chapters,as listed below: Chpt I, isagoge:introduces digital coding technology in Audio/Visual fields, of its significance in application and its development...

全文分为六章，具体安排如下：第一章绪论：介绍了数字编码技术，分析了国内外研究现状及论文研究的现实意义。

Lecturing the technical requirements and constitution of light transmitter and receiver; the theory of noise of light receiver; analytic theories of signal/noise ratio and bit error rate for digital light receiver; technique of coding and decoding of line.

讲授光发送机和光接收机的组成及其技术要求；光接收机的噪声理论；数字光接收机的信噪比和误码率分析理论；线路编解码技术。

At the same time, to counter the problem that traditional coding method of genetic algorithm is difficult to design for this model, conventional genetic algorithm is modified by extending encoding method form digital string to matrix and defining corresponding genetic operator operation, this make encoding clear and understanding easy.

同时，针对遗传算法传统编码方案所存在的问题，提出了遗传算法的改进方案，将染色体结构由传统的数字串扩展到多维数组，并定义了相应的遗传算子操作，使得编码清晰、易于理解，遗传算子操作方便。

In chapter five, the base band signal process of CDMA base station simulator system is introduced, including channel coding and decoding, interleave and disinterleave, PN sequence generator, orthogonal spread spectrum and quadrature Spreading, scrambling code, power control, digital forming filter, the capture and track of PN code, dispreading and demodulation, etc. Some FPGA design graphic and waveform simulation of base band transmitter module is given and realization algorithm of base band receiver is discussed in detail.

第五章介绍了CDMA基站仿真系统的基带信号处理过程，包括信道编译码、交织与去交织、PN码发生器、正交扩频与四相扩频、扰码、功率控制、数字成形滤波器、PN码的捕获与跟踪、解扩与解调等，并给出了基带发射机模块的部分FPGA设计原理图和波形仿真，详细论述了基带接收机模块的实现算法。

Based on digital cadastral surveying, the paper discusses Standard Operation Procedure of Cadastral Surveying by studying on cadastral investigation mode in Gulin county. and determines the general procedure of property investigation, priciples of land parceling and cadastral coding, and the investigation way of differrent land types. With field data collection and indoor work processing, the new cadastral map in Gulin county with the scale of 1:500 which meets the precision requirement. has been finally plotted.

本文正是在此基础上，从数字化地籍测量的角度出发，通过对古蔺县建成区和规划区的地籍调查作业模式的研究，探讨了标准地籍测量作业方法，并确定了权属调查的一般流程和宗地划分原则，地籍编号原则，以及社界、地类、农田的调查方法，通过对外业数据采集和调查所获取数据进行内业处理和精度分析，最终编制了满足精度要求的1：500比例尺古蔺县地籍图。

The system is important to the development and research of speech coding in the digital trunking communication system in theory and.

在数字集群通信系统中，语音编码技术起着相当关键的作用。

Alternatively, a concatenated coding scheme can be used to transmit digital communication signals.

按另一种方式，可以将一个链接编码方案用于发送数字通信信号。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样