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Noise In Digital Communication
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1
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
Three analog signals, having bandwidths 1200 Hz, 600 Hz and 600 Hz are sampled at their respective Nyquist rates, enocodes with 12 bit words, and time division multiplexed. The bit rate for the multiplexed signal is
A
115.2 kbps
B
28.8 kbps
C
57.6 kbps
D
38.4 kbps
2
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
The input to a linear delta modulator having a step size $$\Delta $$ = 0.628 is a sine wave with frequency fm and peak amplitude Em. If the sampling frequency fs = 40 KHz. the combination of the sine-wave frequency and the amplitude, where slope overload will take place is
A
Em 0.3V, Fm 8 KHz
B
Em 1.5V, Fm 4 KHz
C
Em 1.5V, Fm 2 KHz
D
Em 3.0V, Fm 1 KHz
3
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
A signal is sampled at 8 KHz and is quantized using 8-bit uniform quantizer. Assuming $$SN{R_q}$$ for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is
A
R = 32 kbps, $$SN{R_q}$$ = 25.8 dB
B
R = 64 kbps, $$SN{R_q}$$ = 49.8 dB
C
R = 64 kbps, $$SN{R_q}$$ = 55.8 dB
D
R = 32 kbps, $$SN{R_q}$$ = 49.8 dB
4
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
If S represents the carrier synchronization at the receiver and $$\rho $$ represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is
A
$$\rho = 0.5,\,S$$ is required
B
$$\rho = 1.0,\,S$$ is required
C
$$\rho = 0.5,\,S$$ is not required
D
$$\rho = 1.0,\,S $$ is not required
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Questions Asked from Marks 2
GATE ECE 2024 (1) GATE ECE 2022 (1) GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 3 (1) GATE ECE 2016 Set 2 (1) GATE ECE 2015 Set 1 (2) GATE ECE 2014 Set 4 (1) GATE ECE 2014 Set 3 (2) GATE ECE 2014 Set 2 (1) GATE ECE 2008 (4) GATE ECE 2007 (4) GATE ECE 2006 (1) GATE ECE 2004 (3) GATE ECE 2003 (3) GATE ECE 2000 (1) GATE ECE 1999 (1) GATE ECE 1996 (1) GATE ECE 1992 (3) GATE ECE 1991 (1) GATE ECE 1990 (1) GATE ECE 1989 (1) GATE ECE 1988 (2)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics