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 在分析了網(wǎng)絡(luò)時(shí)間協(xié)議和其他時(shí)鐘同步算法后,提出了標(biāo)準(zhǔn)時(shí)間在網(wǎng)絡(luò)上的一種應(yīng)用,并且給出了系統(tǒng)設(shè)計(jì)和實(shí)現(xiàn)的說(shuō)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 系統(tǒng)采用相干解調(diào)方法,載波同步采用costas環(huán),在系統(tǒng)開(kāi)發(fā)過(guò)程中,利用eda工具systemview對(duì)鎖相部分包括載波同步算法和數(shù)字濾波器設(shè)計(jì)等內(nèi)容進(jìn)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 第二部分對(duì)突發(fā)ofdm信號(hào)的同步做了分析,并且提出對(duì)基于802.11a的突發(fā)信號(hào)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 第二部分對(duì)突發(fā)ofdm信號(hào)的同步做了分析,并且提出對(duì)基于802.11a的突發(fā)信號(hào)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 在本人的研究生學(xué)習(xí)階段主要參與了這個(gè)項(xiàng)目中的工作,主要內(nèi)容可以概括為以下幾點(diǎn):1.根據(jù)融合方案同步算法設(shè)計(jì)測(cè)試平臺(tái)時(shí)域同步算法,并編寫matlab程序進(jìn)行仿真驗(yàn)證。
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,首先介紹的是gmsk的調(diào)制方法,接下來(lái)是跳頻環(huán)境下的gmsk接收算法,主要包含了各種同步參數(shù)的捕獲、跟蹤的算法以及信號(hào)的判決方法。
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, 為了降低internet上對(duì)ntp時(shí)間服務(wù)器的訪問(wèn)頻率,有效緩解時(shí)間服務(wù)器資源負(fù)擔(dān)過(guò)重的狀況,提出了一套適用于分布式系統(tǒng)的基于頻率調(diào)節(jié)的時(shí)間同步算法。
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 當(dāng)前工作的目的在于擴(kuò)大新協(xié)議模型的庫(kù),研究在不同并行體系結(jié)構(gòu)環(huán)境影響下的并行性能,節(jié)點(diǎn)移動(dòng)性和樂(lè)觀的并行算法的適宜性。
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,針對(duì)無(wú)源定位系統(tǒng)非均勻采樣數(shù)據(jù)的特殊問(wèn)題提出了無(wú)源定位系統(tǒng)非均勻數(shù)據(jù)同步化算法,即滑動(dòng)窗自適應(yīng)系統(tǒng)周期計(jì)算和快速內(nèi)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 介于本人在該項(xiàng)目中的主要工作是時(shí)域同步算法設(shè)計(jì)及fpga實(shí)現(xiàn)和ldpc碼譯碼器的fpga設(shè)計(jì),在文章的第三章將系統(tǒng)的介紹測(cè)試平臺(tái)時(shí)域同步的算法設(shè)計(jì)過(guò)程及matlab仿真分析,第四章將介紹時(shí)域同步的fpga設(shè)計(jì)、仿真及硬件調(diào)試。