The very title of this book is borrowed from the information theory vocabulary, and, quite naturally, it is an outline of this theory that will serve as an introduction. The subject of information theory is the scientific study of communications. To this end it defines a quantitative measurement of the communicated content, i.e. informa- tion, and deals with two operations essential for communication techniques: source coding and channel encoding.
標簽： Communication Networks Channel Coding in
上傳時間： 2020-05-26
上傳用戶：shancjb
The idea of writing this book entitled “Cognitive Networked Sensing and Big Data” started with the plan to write a briefing book on wireless distributed computing and cognitive sensing. During our research on large-scale cognitive radio network (and its experimental testbed), we realized that big data played a central role. As a result, the book project reflects this paradigm shift. In the context, sensing roughly is equivalent to “measurement.”
標簽： Cognitive Networked Sensing Data Big and
上傳時間： 2020-05-26
上傳用戶：shancjb
Radio propagation measurements and channel modelling continue to be of fundamental importance to radio system design. As new technology enables dynamic spectrum access and higher data rates, radio propagation effects such as shadowing, the presence of multipath and frequency dispersion are the limiting factors in the design of wireless communication systems. While there are several books covering the topic of radio propagation in various frequency bands, there appears to be no books on radio propagation measurements, which this book addresses at length.
標簽： Propagation measurement Radio
上傳時間： 2020-06-01
上傳用戶：shancjb
Thanks for purchasing the RFI Pocket Guide. The purpose of this guide to help you identify, locate and resolve radio frequency interference (RFI). It includes some basic theory and measurement techniques and there are a number of handy references, tables, and equations that you may find useful. The focus is to assist both amateur radio operators, as well as commercial broadcast and communications engineers, in resolving a variety of common interference issues.
標簽： Radio_Frequency_Interference_Pock et_Guide
上傳時間： 2020-06-01
上傳用戶：shancjb
Having dealt with in-depth analysis of SS#7, GSM and GPRS networks I started to monitor UTRAN interfaces approximately four years ago. Monitoring interfaces means decoding the data captured on the links and analysing how the different data segments and messages are related to each other. In general I wanted to trace all messages belonging to a single call to prove if the network elements and protocol entities involved worked fine or if there had been failures or if any kind of suspicious events had influenced the normal call proceeding or the call’s quality of service. Cases showing normal network behaviour have been documented in Kreher and Ruedebusch (UMTS Signaling. John Wiley & Sons, Ltd, 2005), which provides examples for technical experts investigating call flows and network procedures.
標簽： Performance measurement Practical Guide UMTS
上傳時間： 2020-06-01
上傳用戶：shancjb
A revolution in power industries, including generation, transmission and distribution, driven by environmental and economic considerations, is taking place all over the world. The smart grid allows for integration of diverse generation and storage options, reduced losses, improved efficiencies, increased grid flexibility, reduced power outages, allowing for competitive electricity pricing and integration of electric vehicles and overall becoming more responsive to market, consumer and societal needs. It is bringing profound changes to both power systems and many related industries.
標簽： measurement Innovative Solutions Testing and
上傳時間： 2020-06-07
上傳用戶：shancjb
Multisim官方示例Multisim仿真例程基礎電路范例135例合集:Chapter 1 - RLC CircuitsChapter 2 - DiodesChapter 3 - TransistorsChapter 4 - AmplifiersChapter 5 - OpampsChapter 6 - FiltersChapter 7 - Miscellaneous CircuitsFundamental Circuits.pdf004 Parallel DC Circuits.ms10005 Series-Parrallel DC Circuit.ms10006 Current Analysis.ms10007 Millmans Theorem 1.ms10008 Millmans Theorem 2.ms10009 Kirchhoff's Current Law.ms10010 Thevenin's Theorem.ms10011 Superposition Principle.ms10012 Nortons Theorem and Source Conversion.ms10013 AC Voltage measurement.ms10014 Frequency Response of the Series RL Network.ms10015 RL High and Low Pass Filter.ms10016 Frequency Response of the Series RC Network.ms10017 RC High and Low Pass Filter.ms10019 Center-Tapped Full-Wave Rectifier.ms10020 Bridge Rectifier.ms10021 Capacitor-Input Rectifier Filter.ms10022 Diode Clipper (Limiter).ms10023 Diode Clipper.ms10024 Diode Clamper (DC Restorer).ms10025 Diode Voltage Doubler.ms10026 Zener Diode and Voltage Regulation 1.ms10027 Zener Diode and Voltage Regulation 2.ms10028 Zener Diode and Voltage Regulation 3.ms10105 TTL Inverter.ms10107 TTL Gate.ms10109 OR Gate Circuit.ms10111 Over-Damp Circuit.ms10113 Critical-Damp Circuit.ms10115 Series RLC Circuit 1.ms10117 Clapp Oscillator.ms10119 Differential Amplifier 1.ms10121 Differential Amplifier in Common Mode.ms10123 LC Oscillator with Unity Gain Buffer.ms10125 Notch Filter.ms10127 PNP Differential Pair.ms10129 Crossover Network.ms10131 Second-Order High-Pass Chebyshev Filter.ms10133 Third-Order High-Pass Chebyshev Filter.ms10135 Fifth-Order High-Pass Filter.ms10
標簽： multisim
上傳時間： 2021-10-27
上傳用戶：trh505
ADS1118模塊資料熱電偶測量文檔資料硬件參考設計及MSP430軟JDEMO代碼:430BOOST-ADS1118 Booster Pack.pdfADS1118-english.pdfads1118.pdfCJMCU-1118資料IMP NOTICE for REF DESIGNS.pdfMSP430-ADS1118PCBPrecision Thermocouple measurement with the ADS1118.pdfSCH and BOMTemperature Sensing.pdf使用ADS1118進行精密熱電偶測量.pdf模數轉換術語詞匯表.pdf高速數據轉換.pdf
上傳時間： 2021-11-03
上傳用戶：zhaiyawei
TwinCAT 3 入門教程Version 4.13畢孚自動化設備貿易（上海）有限公司2020 年 10 月前言TwinCAT3 是基于 PC 的控制軟件并且它開啟了一個新的時代，是倍福公司歷史上又一個里程碑。特別是在高效的工程領域中 TwinCAT3 將模塊化思想以及其靈活的軟件架構，融入到整個平臺。幾乎每一種控制應用程序都能在 TwinCAT3 中實現。從印刷設備、木工設備、塑料機械或門窗設備、風力發電機和實驗臺，亦或是樓宇，諸如劇院，以及運動場，一切都可以通過 TwinCAT3 實現自動化。用戶可以選擇不同的編程語言來實現這些應用。除了經典的 PLC 編程語言的IEC 61131-3，用戶現在也可以用高級語言 C 或 C++，以及 MATLAB?/ Simulink?。整合了運動功能從而簡化了工程項目，以及全新的安全應用編輯更加人性化。這些以及更多的特性都證明了為什么 TwinCAT3 也名為擴展的自動化。本書針對任何想要學習倍福 TwinCAT3 軟件如何實現基于 PC 控制編程的讀者，閱讀本書需要預先具備 IEC61131-3，C/C++或 MATLAB?/ Simulink?中至少一種編程語言的知識。本書內容的架構安排如下：第一章介紹 TwinCAT3 軟件架構，如何選擇合適的 Visual Studio，以及如何安裝幫助系統。第二章介紹了 TwinCAT3 試用版授權以及完整版授權激活方式，同時介紹了兩種全新硬件授權設備的介紹和使用。第三章介紹了 TwinCAT3 中如何掃描硬件，以及虛擬層和物理層直接的連接如何實現。第四章圍繞 IEC61131-3 的概念展開了說明，講述了 IEC61131-3 標準的核心概念，語法以及 IEC61131-3 新標準擴充的部分。第五章介紹如何創建一個 TwinCAT3 項目，并且選擇 ST（結構文本）語言進行簡單編程，調用功能塊，在線檢測與調試的過程。第六章介紹如何選擇 PLC 中自帶的 HMI 功能編輯一個完整的界面，并且實現全屏顯示，用戶管理，網頁瀏覽等功能。第七章全面介紹 TwinCAT3 中 measurement 功能的使用，包括如何創建一個
標簽： twincat
上傳時間： 2021-12-17
上傳用戶：shjgzh
高通(Qualcomm)藍牙芯片QCC5151_硬件設計詳細指導書（官方內部培訓手冊）共52頁其內容是針對硬件設計、部分重要元器件選擇(ESD，Filter）及走線注意事項的詳細說明。2 Power management 2.1 SMPS 2.1.1 Components specification 2.1.2 Input power supply selection 2.1.3 Minimize SMPS EMI emissions 2.1.4 Internal LDOs and digital core decoupling 2.1.5 Powering external components 2.2 Charger 2.2.1 Charger connections.2.2.2 General charger operation2.2.3 Temperature measurement during charging 2.3 SYS_CTRL 3 Bluetooth radio3.1 RF PSU component choice 3.2 RF band-pass filter3.3 Layout (天線 走線的注意事項)4 Audio4.1 Audio bypass capacitors 4.2 Earphone speaker output4.3 Line/Mic input 4.4 Headphone output optimizition5 LED pads 5.1 LED driver 5.2 Digital/Button input 5.3 Analog input5.4 Disabled 6 Reset pin (Reset#)7 QSPIinterface 8 USB interfaces 8.1 USB device port8.1.1 USB connections8.1.2 Layout notes8.1.3 USB charger detection
上傳時間： 2022-01-24
上傳用戶：XuVshu
