商城 前端 html 页面 模板

【实例简介】在工业中应用最为广泛的一种整流电路，其实质是一组共阴极与一组共阳极的三相半波可控整流电路的串联。习惯将其中阴极连接在一起的三个晶闸管(VT1、VT3、VT5)称为共阴极组;阳极连接在一起的三个晶闸管VT4、VT6、VT2)称为共阳极组。三相整流变压器采用Dy联结，由于共阳极组在电源正半周导通，流经变压器二次绕组的是正向电流，共阴极组在电源负半周导通，流经变压器二次绕组的是反向电流，因此一个周期中，变压器绕组中没有了直流磁动势，有利于减小变压器磁通、电动势中的谐波。此外，习惯上希望晶闸管按从1~6的顺序导通，为此将晶闸管按图示的顺序编号，即共阴极组中与a、b、e三相电源相接的三个晶闸管分别为VT1、VT3、VT5，共阳极组中与a、b、e三相电源相接的三个晶闸管分别为VT4、VT6、VT2。三相桥式全控整流电路必须用双窄脉冲或宽脉冲触发，其移相范围为0°~120°，最大导通角为120°。它主要用于电压控制要求高或要求逆变的场合。

溯雪--国内的著名黑客高手小榕所编写。作为小榕的“刀、光、雪、影”四大系列黑客软件之一，溯雪对各种免费信箱、社区、BBS、聊天室密码的破解有很高的成功率。目前，大部分的信箱以及聊天室的密码破解都是用溯雪来完成的，就连OICQ的密码也可以破解出来（当然了，现在腾讯专门对溯雪进行了防范，由此可以看出溯雪的厉害了）。更为可贵的是，溯雪系列软件都是免费软件，连注册都不用，更方便了我们的使用。 溯雪可对免费信箱进行探测，主要通过猜测生日的方法，成功率可达60%-70%，还对各种社区、BBS、聊天室等密码的探测。另外，它本身还是一个功能完善的浏览器，您可以用它作为平时浏览网站的工具。

Victor C.Chen 《雷达中的微多普勒效应》（The Micro-Doppler effect in Radar）英文原版书籍PDF,我在学习时发现国内翻译版本里有许多错误，公式有误，建议还是看英文原版的

【实例简介】基于Simulink的OFDM系统分析及仿真学习资料-12 基于Simulink的OFDM系统仿真分析.rar 个人收集的一些OFDM仿真学习PDF文档，分享给大家，共同学习！ 1 OFDM通信系统的分析及其Simulink仿真研究.rar 1 OFDM通信系统的分析及其Simulink仿真研究 2 OFDM系统研究及其Simulink仿真.rar 2 OFDM系统研究及其Simulink仿真 3 电力线信道模型下OFDM通信系统的Simulink仿真研究.rar 3 电力线信道模型下OFDM通信系统的Simulink仿真研究 4 基于MATLAB的OFDM通信系统的仿真.rar 4 基于MATLAB的OFDM通信系统的仿真 5 基于OFDM的低压电力线载波通信系统仿真.rar 5 基于OFDM的低压电力线载波通信系统仿真 6 基于OFDM的电力线载波通信的研究.rar 6 基于OFDM的电力线载波通信的研究 7 基于OFDM技术的电力线载波家居网络.rar 7 基于OFDM技术的电力线载波家居网络 8 基于OFDM技术的电力线载波通信研究.rar 8 基于OFDM技术的电力线载波通信研究 9 基于Simulink的OFDM_FH通信系统仿真.rar 9 基于Simulink的OFDM_FH通信系统仿真 10 基于Simulink的OFDM通信系统仿真.rar 10 基于Simulink的OFDM通信系统仿真 11 基于SIMULINK的OFDM系统仿真.rar 11 基于SIMULINK的OFDM系统仿真 12 基于Simulink的OFDM系统仿真分析.rar 12 基于Simulink的OFDM系统仿真分析 13 基于Simulink的OFDM系统分析及仿真.rar 13 基于Simulink的OFDM系统分析及仿真 14 基于Simulink的OFDM系统设计与仿真.rar 14 基于Simulink的OFDM系统设计与仿真 15 基于Simulink的WiMAX_MIMO_OFDM物理层性能仿真.rar 15 基于Simulink的WiMAX_MIMO_OFDM物理层性能仿真 16 基于Simulink的窄带OFDM系统设计与仿真.rar 16 基于Simulink的窄带OFDM系统设计与仿真 17 基于Simulink的正交频分复用系统仿真.rar 17 基于Simulink的正交频分复用系统仿真 18 基于SIMULINK构建OFDM仿真系统的研究.rar 18 基于SIMULINK构建OFDM仿真系统的研究 19 基于正交频分复用的低压电力线载波通信技术.rar 19 基于正交频分复用的低压电力线载波通信技术 20 基于正交频分复用的电力载波宽带远动通信系统.rar 20 基于正交频分复用的电力载波宽带远动通信系统

【实例简介】用MELP算法将语音信号压缩到2.4kbps,程序用C语言编写

交通流元胞自动机仿真平台V3.0

该软件用来设置AD9910信号发生器平台，很好很强大！

关于5G通信和无线传输的相关知识5G Mobile and wirelessCommunications TechnologyEDITED BYAFIF OSSEIRANEricssonJOSE F MONSERRATUniversitat politecnica de valenciaPATRICK MARSCHCAMBRIDGEUNIVERSITY PRESSCAMBRIDGEUNIVERSITY PRESSUniversity Printing House, Cambridge CB2 8BS, United KingdomCambridge University Press is part of the University of CambridgeIt furthers the Universitys mission by disseminating knowledge in the pursuit ofeducation learning and research at the highest international levels of excellencewww.cambridge.orgInformationonthistitlewww.cambridge.org/9781107130098C Cambridge University Press 2016This publication is in copyright. Subject to statutory exceptionand to the provisions of relevant collective licensing agreementsno reproduction of any part may take place without the writtenpermission of Cambridge University PressFirst published 2016Printed in the United Kingdom by TJ International Ltd. Padstow Cornwalla catalogue record for this publication is available from the british libraryLibrary of Congress Cataloguing in Publication dataOsseiran. Afif editor5G mobile and wireless communications technology /[edited by] Afif Osseiran, EricssonJose F monserrat, Polytechnic University of Valencia, Patrick Marsch, Nokia NetworksNew York: Cambridge University Press, 2016LCCN2015045732|ISBN978110713009( hardback)LCSH: Global system for mobile communications. Mobile communication systems- StandardsLCC TK5103483A152016DDC62138456dc23Lcrecordavailableathttp://icCn.loc.gov/2015045732IsBN 978-1-107-13009-8 HardbackCambridge University Press has no responsibility for the persistence or accuracy ofURLS for external or third- party internet websites referred to in this publicationand does not guarantee that any content on such websites is, or will remainaccurate or appropriateTo my new born son S, my twin sons H& N, my wife L s-y for her unwaveringencouragement, and in the memory of a great lady my aunt K eA OsseiranTo my son, the proud fifth generation of the name Jose Monserrat. And with thewarmest love to my daughter and wife, for being always there.E MonserratTo my two small sons for their continuous energetic entertainment, and my dearwife for her amazing patience and support.P MarschContentsList of contributorspage xIvForewordAcknowledgmentsXIXAcronymsXXIIIntroduction1. 1 Historical background1.1.1 Industrial and technological revolution: from steam enginesto the internet1. 1.2 Mobile communications generations: from IG to 4G1.1.3 From mobile broadband ( mbb) to extreme MBB1. 1.4 IoT: relation to 5G1.2 From ICT to the whole economy6771.3 Rationale of 5G: high data volume, twenty-five billion connecteddevices and wide requirements1.3.1 Security1.4 Global initiatives1. 4.1 METIS and the 5G-PPP1. 4.2 China: 5G promotion group2241. 4.3 Korea: 5G Forum141. 4.4 Japan: ARIB 2020 and Beyond Ad Hoc1. 4.5 Other 5G initiatives14.6 Iot activities1.5 Standardization activities445551.5.1ITU-R1.5.23GPP161.5.3 EEE161.6 Scope of the book16References185G use cases and system concept212. 1 Use cases and requirements212.1.1 Use cases212. 1.2 Requirements and key performance indicatorsContents2.2 5G system concept322.2.1 Concept overview322. 2.2 Extreme mobile broadband342.2.3 Massive machine-type communication362.2.4 Ultra-reliable machine-type communication382.2.5 Dynamic radio access network392.2.6 Lean system control plane432. 2. 7 Localized contents and traffic flows52.2.8 Spectrum toolbox2. 3 Conclusions48References48The 5g architecture503.1 Introduction503.1.1 NFV and SDN503.1.2 Basics about ran architecture533.2 High-level requirements for the 5G architecture563.3 Functional architecture and 5g flexibility573.3.1 Functional split criteria583.3.2 Functional split alternatives593.3.3 Functional optimization for specific applications3.3.4 Integration of lte and new air interface to fulfill 5Grequirements3.3.5 Enhanced Multi-RAT coordination features663. 4 Physical architecture and 5G deployment3.4.1 Deployment enablers673.4.2 Flexible function placement in 5G deployments713.5 Conclusions74References75Machine-type communications774.1 Introduction774.1.1 Use cases and categorization of mto774.1.2 MTC requirements804.2 Fundamental techniques for MTC834.2.1 Data and control for short packets834.2.2 Non-orthogonal access protocols854.3 Massive mtc864.3.1 Design principles864.3.2 Technology components864.3. 3 Summary of mMTC features944.4 Ultra-reliable low-latency MTC944.4. 1 Design principles944.4.2 Technology componentsContents4.4.3 Summary of uMTC features1014.5 Conclusions102References103Device-to-device(D2D)communications1075.1 D2D: from 4G to 5G1075.1.1 D2D standardization: 4G LTE D2D1095.1. 2 D2D in 5G: research challenges1125.2 Radio resource management for mobile broadband D2D1135.2.1 RRM techniques for mobile broadband d2d5.2.2 RRM and system design for D2D1145.2.3 5G D2D RRM concept: an example5.3 Multi-hop d2d communications for proximity and emergencyservices1205.3.1 National security and public safety requirements in 3GPPand Metis1215.3.2 Device discovery without and with network assistance125.3.3 Network-assisted multi-hop d2d communications1225.3.4 Radio resource management for multi-hop D2D1245.3.5 Performance of D2D communications in the proximitcommunications scenario1255. 4 Multi-operator d2d communication1275.4.1 Multi-operator D2D discovery275.4.2 Mode selection for multi-operator D2D1285.4.3 Spectrum allocation for multi-operator D2D295.5 Conclusions133References1346Millimeter wave communications1376. 1 Spectrum and regulations1376.2 Channel propagation1396.3 Hardware technologies for mm W systems1396.3.1 Device technology1396.3.2 Antennas1426.3.3 Beamforming architecture1436.4 Deployment scenarios6. 5 Architecture and mobility1466.5.1 Dual connectivit1476.5.2 Mobility1476.6 Beamforming1496.6. 1 Beamforming techniques1496.6.2 Beam finding1506.7 Physical layer techniques1526.7.1 Duplex scheme152

【实例简介】由灰度图像转换成彩色图像的实例。用户可以稍加改动，便可如自己所愿。

【实例简介】基于FFT的arduino音乐频谱显示，通过麦克风采样，然后通过LCD1602A显示