1
GATE ECE 2017 Set 2
Numerical
+1
-0
A sinusoidal message signal is converted to a PCM signal using a uniform quantizer. The required signal to quantization noise ratio (SQNR) at the output of the quantizer is 40dB. The minimum number of bits per sample needed to achieve the desired SQNR is ________ .
Your input ____
2
GATE ECE 2016 Set 3
MCQ (Single Correct Answer)
+1
-0.3
A binary baseband digital communication system employs the signal
$$$p\left( t \right) = \left\{ {\matrix{
{{1 \over {\sqrt {{T_s}} }},} & {0 \le t \le {T_s}} \cr
{0,} & {otherwise} \cr
} ,} \right.$$$
for transmission of bits. The graphical representation of the matched filter output y(t) for this signal will be
A
B
C
D
3
GATE ECE 2015 Set 2
Numerical
+1
-0
A sinusoidal signal of amplitude A is quantized by a uniform quantizer. Assume that the signal
utilizes all the representation levels of the quantizer. If the signal to quantization noise ratio is 31.8
dB, the number of levels in the quantizer is _________ .
Your input ____
4
GATE ECE 2014 Set 1
Numerical
+1
-0
The capacity of a Binary Symmetric Channel (BSC) with cross - over probability 0.5 is ______ .
Your input ____
Questions Asked from Noise In Digital Communication (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