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所在平台: Udemy |
课程主页: https://www.udemy.com/course/analog-communication-am-fm-pm-noise-receiver-explained/
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**Coursera 课程总结：模拟通信：AM、FM、PM、噪声与接收机详解** 本课程深入探讨了模拟通信系统的基础知识，涵盖了从基本概念到高级技术的广泛内容。 **核心内容概览：** * **第一章：模拟通信系统导论：** 介绍了通信系统的基本框图、分类，强调了频域分析的优势，并阐述了调制（包括基带信号和通带信号）的必要性。 * **第二章：幅度调制 (AM)：** 详细讲解了幅度调制的原理、参数、调制与解调器、AM实例，以及双边带抑制载波 (DSBSC)、单边带抑制载波 (SSBSC) 和变迹边带 (VSB) 等调制方式，并进行了对比分析。 * **第三章：角度调制：** 聚焦于调频 (FM) 和调相 (PM) 的基本原理，包括频率偏差、调制指数、频谱成分、带宽要求和平均功率。课程还区分了窄带FM (NBFM) 和宽带FM (WBFM)，并讲解了FM的产生和解调方法。 * **第四章：通信系统中的噪声：** 探讨了各种噪声源及其分类，重点解析了信噪比 (SNR)、噪声系数 (Noise Figure) 和噪声温度 (Noise Temperature)。课程还包括了多级系统等效噪声参数的计算，以及具体噪声问题的示例分析。 * **第五章：通信系统接收机：** 介绍了接收机的关键参数，并详细讲解了调谐收音机 (TRF) 和超外差接收机 (Super Heterodyne Receiver)。课程还分析了超外差接收机的参数、本振频率的选择，并对比了AM和FM接收机的特点，最后给出了超外差接收机的实例。 本课程以其系统性的讲解和丰富的实例，为学习者构建了坚实的模拟通信理论基础，对于理解现代数字和无线通信技术也至关重要。
Analog communication forms the backbone of early and modern communication systems, enabling the efficient transmission of voice, video, and radio signals. Understanding analog modulation techniques like AM and FM is essential for grasping how real-world signals are processed and transmitted over long distances. It lays a strong foundation for advanced topics like digital and wireless communication.This course includes videos related to Analogue Communication and covers all the fundamentals of the Subject.Here, Prof. Hitesh Dholakiya has covered all the topics of Analog Communication with the following outlines:Chapter 1: Introduction to Analog Communication Systems: Chapter 2: Amplitude Modulation:Chapter 3: Angle Modulation:Chapter 4: Noise in Communication Systems:Chapter 5: Receivers of Communication Systems:Chapter-wise detailed syllabus is as follows:Chapter 1 Introduction to Analog Communication Systems: Communication System block diagram, Classification of Communication system, Advantages of Frequency domain analysis over time domain analysis, Necessity of Modulation, Baseband signals and Passband signals, Classification of modulation techniques.Chapter 2 Amplitude Modulation:Amplitude Modulation, Parameters of Amplitude Modulation, AM Modulator, AM Demodulator, AM Examples, Multitone Amplitude Modulation, DSBSC - Double Side Band Suppressed carrier, DSBSC Modulator, DSBSC Demodulator, Examples on DSBSC, SSBSC - Single Side Band Suppressed Carrier, SSBSC Modulator, SSBSC Demodulator, Examples on SSBSC, VSB - Vestigial Sideband, VSB Modulator, VSB Demodulation, VSB Filter Design, Comparison of DSBFC, DSBSC, SSBSC and VSB.Chapter 3 Angle Modulation:Basics of Angle Modulation, Frequency Modulation, Phase Modulation, Frequency deviation & Modulation Index in FM, Spectral components of Angle Modulation, Bandwidth requirements in angle modulation, Average Power requirement for angle modulation, NBFM - Narrow Band Frequency Modulation, WBFM - Wide Band Frequency Modulation, FM Generation, FM Demodulation, Examples on Angle modulation, Examples on Frequency modulation, Examples on phase modulation.Chapter 4 Noise in Communication Systems:Sources of noise in communication systems, Classifications of Noise in communication system, SNR - Signal to Noise Ratio, Noise Figure, Noise Temperature in communication system, Equivalent Noise figure and noise temperature of Cascaded System, Examples on thermal noise, Examples on SNR & Noise Figure & Noise Temperature.Chapter 5 Receivers of Communication Systems:Parameters of Receiver, Tuned Radio frequency receiver, Super Heterodyne receiver, Parameters of super heterodyne receiver, Selection of local oscillator frequency, Comparison of AM receiver and FM receiver, Examples on super heterodyne receiver.Thank you.
