Analog and Digital Communication System

Which modulation technique transmits one complete sideband and a part of another sideband

1. AM
2. DSBSC
3. SSB-SC
4. VSB-SC

Which of the following is an advantage of FM over AM?

1. Lower bandwidth requirement
2. Simpler transmitter
3. Better noise immunity
4. Lower transmission quality

According to the Sampling Theorem, the sampling frequency should be

1. Equal to signal frequency
2. At least twice the highest frequency of the signal
3. Less than signal frequency
4. Half the signal frequency

What is the primary purpose of error control coding?

1. Increase bandwidth
2. Reduce transmission speed
3. Compress data
4. Detect and correct errors in transmitted data

A major advantage of optical communication is

1. High data transmission rate
2. Low bandwidth capacity
3. High signal attenuation
4. High electromagnetic interference

Which frequency range is generally used in microwave communication systems?

1. Audio frequency range
2. GHz frequency range
3. Radio frequency below 1 MHz
4. Infrared frequency range

In cyclic codes, the received code word is checked for errors using

1. Syndrome calculation
2. Modulation
3. Multiplication
4. Sampling

Which pulse modulation technique changes the position of the pulse according to the message signal?

1. PAM
2. PWM
3. PCM
4. PPM

Which modulation technique belongs to angle modulation?

1. AM
2. DSBSC
3. FM
4. VSB-SC

What is the full form of DSBSC?

1. Double Signal Band Suppressed Carrier
2. Dual Side Band Signal Carrier
3. Double Side Band Suppressed Carrier
4. Digital Side Band Suppressed Carrier

Explain the basic blocks of a communication system with a neat block diagram and describe the function of each block.

Explain the principle of SSB-SC modulation. Discuss its advantages and disadvantages over conventional AM.

Explain the concept of angle modulation and differentiate between Frequency Modulation and Phase Modulation.

Explain the transmission bandwidth of FM signals and derive Carson’s Rule.

Explain Pulse Amplitude Modulation with suitable waveform diagrams.

Compare PAM, PWM, PPM, and PCM.

Compare linear block codes, cyclic codes, and convolution codes.

Discuss the advantages and limitations of convolution coding in digital communication systems.

Explain the working principle of microwave communication systems with suitable block diagrams.

Describe the architecture and working principle of a mobile communication system.

Compare AM, DSBSC, SSB-SC, and VSB-SC modulation techniques.

Explain the working of an FM transmitter with a neat block diagram.

Describe the principle of Phase Modulation and derive the expression for a PM signal.

Discuss the generation and characteristics of DSBSC modulation with suitable diagrams.

Quadrature Phase Shift Keying

Syndrome calculation method for error detection in cyclic codes

Optical communication system and its components

Linear Block Codes