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所在平台: Udemy |
课程主页: https://www.udemy.com/course/digital-analog-introduction-to-modulation-in-communication-systems/
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**课程名称：** 通信系统中的调制技术（面向射频工程师） RAHRF152 **课程概述：** 本课程是 Rahsoft 射频工程师认证的第二门免费证书课程，是该认证的入门课程之一。通过将数字和模拟调制技术进行简化，并结合 GNU Octave 开源软件的示例和仿真，帮助学员理解实际应用。课程旨在帮助学员掌握通信系统中数字和模拟调制所需的基础定义。 **主要内容：** * **调制概述：** * 为何需要调制？ * 基带与通带？什么是解调？ * 通用通信系统及职业前景 * 调制的相关方面：可检测性、带宽与功率效率、误比特率 * **模拟调制：** * 幅度调制 (AM)：AM、幅度解调、AM应用 * 频率调制 (FM)：FM、频谱、FM规格、高指数FM * FM解调：斜率检测器、FM的优缺点 * 相位调制 (PM)：PM、FM与PM比较、PM解调 * **数字调制：** * 比特率、波特率、二进制与 M 进制数据、奈奎斯特定理、信道容量 * 幅度键控 (ASK)：ASK、频谱响应、二进制ASK、M进制ASK、软件示例、ASK解调 * 频率键控 (FSK)：FSK调制器与解调器、使用PLL进行解调、软件示例 * 相位键控 (PSK)：PSK、BPSK、PSK调制、PSK解调、PSK解调器、失配、Costas环 * **信号失真与星座图：** * 码间串扰 (ISI) * 解决码间串扰 (ISI) * 信号星座图：PSK和FSK调制的星座图 * **正交调制：** * I & Q信号、正交信号的叠加与仿真 * QPSK 或 4-PSK 调制 * QPSK特性、图示、信号星座图、解调与BER * I-Q失配 * 大相位变化、QPSK的缺点、π/4 QPSK、OQPSK **软件工具：** * GNU Octave (开箱即用的开源软件) **注意：** 本课程提供 GNU Octave 开源软件的安装指南。
This course provides a second certificate completion for FREE from Rahsoft Introduction to Modulation in Communication Systems RAHRF152 is an intro course of Rahsoft Radio Frequency Certificate and it is counted toward the certificate. In this course we have concentrated to simplify the Digital and Analog Modulation topics in a way which students would understand the practicality by providing examples and simulations using GNU Octave open source software. This is a great course to understand the fundamental definitions needed in digital and analog modulation in communication system. General Consideration of Modulation 2. 1.1-Why we need modulation ?3. 1.2 - Baseband and Passband ? What is Demodulation?4. 1.3 - Career and Generic Communication System5. 1.4-Modulation Aspects:Detectability,Bandwidth & Power Efficiency,Bit Error Rate Analog Modulation 6. 2.1 - Amplitude Modulation , AM, Amplitude Demodulation, AM Applications7. How to install GNU Octave Open Source Software Used in this course8. 2.2.1 - Frequency Modulation, FM, Spectrum, FM Specs, High Index9. 2.2.2- FM Demodulation , Slope Detector , FM Pros and Cons10. 2.3- Phase Modulation, PM , FM vs PM , PM Demodulation Digital Modulation 11. Bit Rate , Baud Rate , Binary & M-ary Data, Nyquest Formula , Channel Capacity12. 3.1.1- Amplitude Shift Keying , ASK, Spectral Response Binary Data, B-ASK M-ASK13. 3.1.2- Software Example14. 3.1.3- ASK Demodulation15. 3.2.1-Frequency Shift Keying, FSK Modulator & Demodulator, Demodulation with PLL16. 3.2.2- Software Example17. 3.3.0- Phase Shift Keying (PSK) , BPSK, PSK Modulation18. 3.3.1- PSK Demodulation , PSK Demodulator, mismatch,Costas loop19. 4.1- Inter symbol interference (ISI)20. 4.2- Solving Inter symbol interference (ISI)21. 5.1- Signal Constellation, PSK and FSK Modulation Constellation22. 6.1- Quadrature modulation, I & Q , Adding Quadrature Signals and Simulation23. 6.2.0- QPSK or 4-PSK Modulation24. 5.6.2.1- Software Simulation25. 6.3.0- QPSK Features , Diagrams , Signal Constellation, Demodulation BER26. 6.3.1- I-Q Mismatch27. 6.3.2- Large Phase Change, QPSK Drawbacks , pi/4 QPSK , OQPSK
