信道编码器

为实现其机动性一般是以汽车为载体的，数字卫星新闻采集系统的设备包括MPEG-2编码器，信道编码器，QPSK调制和上变频器，高频功率放大器和卫星天线以及供电设备等辅助设备。

We usually use the vehicle to realize its motivation . The equipments of the DSNG system including the MPEG-2 source encoder , the channel encoder , QPSK and upconverter , high-frequency power amplifier the satellite aerial , the equipment which afford the electricity and other auxiliary parts .

在学习纠错编码和交织技术基本理论的基础上，重点分析了DVB-C2标准中的信道编码技术，提出了通用信道编码器的设计和实现方案，并给出了部分参数下各模块的仿真结果。

Then based on learning the basic theory of error correction coding and interleaving techniques , the channel coding technique of DVB-C2 is analyzed . After that , the design and implementation of an universal channel encoder is proposed .

要普及数字电视首先要开发数字电视的广播系统，目前我国的数字电视地面广播还在研究开发中，本项目为数字电视地面广播信道编码器的设计。

To popularize the digital television , we should develop the system of the digital video broadcasting .

但是，在实际中发现，用某种特定方法连接起来的最优信源编码器和信道编码器，并不一定能构成最佳通信系统。

But , it may be not a optimum system using an " ad hoc " method to combine the optimum source with channel coders in practical communication systems .

本人主要负责通信板的工作，在DSP+FPGA的硬件平台上，研究设计了通信模块，并在此基础上介绍了自适应可重构信道编码器的详细设计过程。

My duty is to research on and realize the communication module on DSP + FPGA hardware platform . Then we introduce the design of the adaptive and reconfigurable codec in detail based on the platform .

基于PSTN传输信道的视频编码器码率控制

Rate Control Scheme of the Video Encoder on the PSTN Channel

为设计一个用于信道仿真和编码器性能测试的高速高斯随机数发生器，研究了适于硬件实现的高速通用的连续随机变量和随机序列产生法。

To design a gaussian random number generator used for channel simulation and coder performance test , high-speed universal random number and correlated stochastic series generators are studied .

该算法位于解码端，算法利用边信息和差值分布的概率模型以及高位比特对编码比特平面的码率进行估计，并将估计码率通过反馈信道传送到编码器。

The proposed algorithm estimates the rate of each bitplane with the side information and the Laplacian distribution of difference between the source and the side information . And the result is transmitted to the encoder via a feedback channel .

PLL的动态重配置功能使得动态重配置信道编码参数成为了可能，真正实现了信道编码器的通用性。

The dynamic reconfigurable feature of PLL makes dynamic reconfiguration of channel coding parameters as possible . Based on this , the universal channel encoder is realized .

论述了衰落信道上turbo码的仿真方法与相关衰落信道上编码器的构成方式，给出了衰落信道上turbo码的最大似然译码的平均性能上界。

The simulation method and the performance of turbo codes on a Rayleigh fading channel are described , and an average upper bound for the maximum likelihood decoding strategy of turbo codes is derived .

利用Turbo码在两个信道译码器之间的迭代，能够得到更加精确的信道编码器输入数据比特的概率，从而代替在一般Turbo均衡器中对于该概率的独立等分布（IID）的假设。

More exact probability of channel encoder input data bits are obtained by utilizing turbo code , which is needed in a maximum a-posteriori probability ( MAP ) decoder , to replace the independent and identically distributed ( IID ) assumption of this probability in general turbo equalization .

第五章针对信源与信道编码各自的特点，提出了一个采用SPECK信源编码器和改进的Turbo码信道编码器联合实现对信源数据的不等差错保护的联合编码方案。

Chapter 5 presents a JSCC approach based on SPECK source coder and revises Turbo-codes channel coder according to the characteristic of source and channel coding to perform unequal error protected for the source data .

文章通过介绍TETRA标准中所采用的信道纠错编码方案对几种纠错编码技术及其性能进行了较为详细的分析，在此基础上给出了信道编码器的实现方案。

This paper introduced the channel coding schemes used in TETRA , analyzed the performance of principle channel coding techniques and then gave the channel coder implementation scheme .