Basics of Communication Systems

This Video lecture covers basic concept of Amplitude modulation and Numerical. The topics covered in detailed are as follows:

1. What is Modulation

2. AM Generation

3. The Generation of AM Envelope

4. Modulation Index and Percent of Modulation

5. Varying modulation index impact on AM Wave

6. Determining modulation index from Vmax & Vmin

7. Mathematical Representation and Analysis of AM

In This video lecture following topics are covered

1. The Mathematical Representation and Analysis of AM

2. AM Frequency Spectrum and Bandwidth

3. Frequency spectrum of an AM DSBFC Wave

4. AM Power Distribution

Following topics are discussed in this video Lecture

1. AM Power Distribution

a) Power spectrum for AM DSBFC wave with a single-frequency modulating signal

b) Numerical Base on AM Power Distribution

2. Modulation by a complex information signal

a) Frequency spectrum for complex information signal

b) Modulation index for complex information signal

c) Numerical based on Modulation by a complex information signal

In this video lecture following topics are discussed

1. LOW LEVEL MODULATION TRANSMITTER

2. HIGH LEVEL MODULATION TRANSMITTER

3. COMPARISION BETWEEN LOW-LEVEL AND HIGH-LEVEL MODULATION

In this video lecture following topics are discussed

1. Double sideband Full carrier (DSB-FC) understanding of spectrum

2. Double Sideband with suppressed carrier (DSB-SC): Need, Power saving, spectrum analysis, Bandwidth.

3. Balanced Modulator for Double Sideband with suppressed carrier (DSB-SC) working.

4. Double Sideband with suppressed carrier (DSB-SC) advantages disadvantages and applications.

In this lecture following topics are covered

1. Single Side band Suppress Carrier (SSB-SC): Frequency spectrum and power saving

2. Filtering method for Single Side band Suppress Carrier (SSB-SC) generation.

3. Phasing method using two balance modulator for Single Side band Suppress Carrier (SSB-SC) generation.

PAM Pulse Amplitude modulation & generation & detection

PWM Pulse width modulation, generation and detection.

PPM Pulse position modulation of generation & detection.

Comparison of PAM PWM & PPM.

In this video lecture Line coding techniques are discussed :

Return to zero (RZ),

Non-Return to zero (NRZ);

Manchester Encoding

Differential Mancheste