After analyzing network time protocol and other clock synchronization algorithm, come out with an application of standard time on network, and get out the illustration of system design and realization 在分析了网络时间协议和其他时钟同步算法后,提出了标准时间在网络上的一种应用,并且给出了系统设计和实现的说明。
Phase-lock part of the system was simulated in system view that is a eda tool, including picking-up carrier synchronization algorithm and designing filter, etc 系统采用相干解调方法,载波同步采用costas环,在系统开发过程中,利用eda工具systemview对锁相部分包括载波同步算法和数字滤波器设计等内容进行了仿真分析。
The first section studies the synchronization algorithm, implementation and performance in cdma receiver in burst mode; the second section studies the synchronization algorithm, implementation and performance in ofdm receiver in burst mode 第二部分对突发ofdm信号的同步做了分析,并且提出对基于802.11a的突发信号的同步方案,并做了性能分析。
The first section studies the synchronization algorithm, implementation and performance in cdma receiver in burst mode; the second section studies the synchronization algorithm, implementation and performance in ofdm receiver in burst mode 第二部分对突发ofdm信号的同步做了分析,并且提出对基于802.11a的突发信号的同步方案,并做了性能分析。
This thesis is summared in chapter 5 . the main work described in this project is listed as follows : 1 . design the time-domain synchronization algorithm of platform, and simulate it in matlab 在本人的研究生学习阶段主要参与了这个项目中的工作,主要内容可以概括为以下几点:1.根据融合方案同步算法设计测试平台时域同步算法,并编写matlab程序进行仿真验证。
The receiver must complete two tasks to demodulate the signal : synchronization of all parameters ( estimation and track ) and decision . in the explanation of synchronization algorithm, a thorough inspection is given to the timing track loop 在第一部分中,首先介绍的是gmsk的调制方法,接下来是跳频环境下的gmsk接收算法,主要包含了各种同步参数的捕获、跟踪的算法以及信号的判决方法。
In order to reduce access frequency to the ntp time server, and efficiently relieve the over-load situation of server . a time synchronization algorithm based on frequency adjustment in distributed system was proposed . under the same accuracy requirement, 为了降低internet上对ntp时间服务器的访问频率,有效缓解时间服务器资源负担过重的状况,提出了一套适用于分布式系统的基于频率调节的时间同步算法。
Current work in progress is aimed at expanding the library with new protocol modules and a thorough investigation of parallel performance under the impact of different parallel architecture environment, node mobility as well as the suitability of optimistic synchronization algorithms 当前工作的目的在于扩大新协议模型的库,研究在不同并行体系结构环境影响下的并行性能,节点移动性和乐观的并行算法的适宜性。
Sencondly, passive location system nonuniformly-sampled data synchronization algorithm is designed based on the particularity of the passive location nonuniformly-sampled data, which including adaptive system period algorithm with sliding window and fast interpolation algorithm cep其次,针对无源定位系统非均匀采样数据的特殊问题提出了无源定位系统非均匀数据同步化算法,即滑动窗自适应系统周期计算和快速内插算法。
In the project of constructing the platform, the design of the time-domian synchronization algorithm is in the charge of me, which has been realized on fpga . it is introduced detailedly in chapter 3 and chapter 4 . additionally, the design of ldpc decoder based on fpga is another part of the project 介于本人在该项目中的主要工作是时域同步算法设计及fpga实现和ldpc码译码器的fpga设计,在文章的第三章将系统的介绍测试平台时域同步的算法设计过程及matlab仿真分析,第四章将介绍时域同步的fpga设计、仿真及硬件调试。