1
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
In a PCM system with uniform quantization, increasing the number of bits from 8 to 9 will reduce the quantization noise power by a factor of
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
For a given data rate, the bandwidth Bp of a BPSK signal and the band width B0 of the OOK signal are related as
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
Quadrature multiplexing is
4
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
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