Necessity of Modulation or Needs of Modulation in Analog Communication by Engineering Funda

Necessity of Modulation or Needs of Modulation is explained by the following outlines:

1. Modulation
2. Modulation in communication system
3. Needs of Modulation in communication system
4. Advantages of Modulation in communication system
5. Necessity of Modulation to decrease size of antenna
6. Necessity of Modulation to increase radiated power
7. Necessity of Modulation to have Multiplexing of signal
8. Necessity of Modulation to get wide Bandwidth
9. Necessity of Modulation to get less bending of wave propagation

Chapter-wise detailed Syllabus of the Analog Communication Course is as follows:

Chapter-1 Introduction to Analog Communication system:    • Introduction to Analog Communication System  
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, DSBSC, SSBSC and VSB  
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:    • Angle Modulation, Frequency & Phase Modula...  
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, FM Generation, FM Demodulation, Examples on Angle modulation, Examples on Frequency modulation, Examples on phase modulation, Phase Lock Loop.

Chapter-4 Noise:    • Noise in Analog communication  
Sources of noise in communication systems, Classifications of Noise in communication systems, SNR - Signal to Noise Ratio, Noise Figure, Noise Temperature in communication system, Equivalent Noise figure and noise temperature, Examples of thermal noise, Examples of SNR & Noise Figure & Noise Temperature.

Chapter-5 Receiver:    • Receiver in Analog Communication  
Parameters of Receiver, Tuned Radio frequency receiver, Super Heterodyne receiver, Parameters of superheterodyne receiver, Selection of local oscillator frequency, Comparison of AM receiver and FM receiver, Examples on superheterodyne receiver.

Chapter-6 SNR of Analog Modulation:    • SNR of Analog Modulation System  
SNR of Baseband system, SNR of AM system, SNR of DSBSC system, SNR of SSBSC system.

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