1

GATE ECE 1997

MCQ (Single Correct Answer)

+1

-0.3

A deterministic signal has the power spectrum given in figure. The minimum sampling rate needed to completely represent this signal is

2

GATE ECE 1995

MCQ (Single Correct Answer)

+1

-0.3

If the number of bits per sample in a PCM system is increased from n to n+1, the improvement in signal-to-quantization noise ratio will be

3

GATE ECE 1995

MCQ (Single Correct Answer)

+1

-0.3

The signal to quantization noise ratio in an n-bit PCM system

4

GATE ECE 1994

Fill in the Blanks

+1

-0

The bandwidth required for the transmission of a PCM signal increases by a factor of ________ when the number of quantization levels is increased from 4 to 64.

Questions Asked from Digital Communication Systems (Marks 1)

Number in Brackets after Paper Indicates No. of Questions

GATE ECE Subjects

Network Theory

Control Systems

Electronic Devices and VLSI

Analog Circuits

Digital Circuits

Microprocessors

Signals and Systems

Representation of Continuous Time Signal Fourier Series
Discrete Time Signal Fourier Series Fourier Transform
Discrete Time Signal Z Transform
Continuous Time Linear Invariant System
Transmission of Signal Through Continuous Time LTI Systems
Discrete Time Linear Time Invariant Systems
Sampling
Continuous Time Signal Laplace Transform
Discrete Fourier Transform and Fast Fourier Transform
Transmission of Signal Through Discrete Time Lti Systems
Miscellaneous
Fourier Transform

Communications

Electromagnetics

General Aptitude