1

GATE ECE 2014 Set 1

Numerical

+1

-0

In a code - division multiple access (CDMA) system with N = 8 chips, the maximum number of users who can be assigned mutually orthogonal signature sequences is _______.

Your input ____

2

GATE ECE 2013

MCQ (Single Correct Answer)

+1

-0.3

The bit rate of a digital communication system is R kbits/s. The modulation used is 32-QAM. The minimum bandwidth required for ISI free transmission is

3

GATE ECE 2004

MCQ (Single Correct Answer)

+1

-0.3

In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor

4

GATE ECE 2004

MCQ (Single Correct Answer)

+1

-0.3

In the output of a DM speech encoder, the consecutive pulses are of opposite polarity during time interval t

_{1}$$ \le $$ t $$ \le $$ t_{2}. This indicates that during this intervalQuestions Asked from Digital Communication Systems (Marks 1)

Number in Brackets after Paper Indicates No. of Questions

GATE ECE Subjects

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

Network Theory

Control Systems

Digital Circuits

General Aptitude

Electronic Devices and VLSI

Analog Circuits

Engineering Mathematics

Microprocessors

Communications

Electromagnetics