1
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
Let $$g\left( t \right){\mkern 1mu} {\mkern 1mu} \,\,\,\,\,{\mkern 1mu} = {\mkern 1mu} {\mkern 1mu} p\left( t \right){}^ * p\left( t \right)$$ where $$ * $$ denotes convolution and $$p(t) = u(t) - u(t-1)$$ with $$u(t)$$ being the unit step function

The impulse response of filter matched to the signal $$s(t) = g(t)$$ $$ - \delta {\left( {t - 2} \right)^ * }\,\,g\left( t \right)$$ is given as:

A
$$s\left( {1 - t} \right)$$
B
$$ - s\left( {1 - t} \right)$$
C
$$ - s\left( t \right)$$
D
$$ s\left( t \right)$$
2
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
In the following figure the minimum value of the constant “C”, which is to be added to y1(t) such that y1(t) and y2(t) are different, is GATE ECE 2006 Communications - Noise In Digital Communication Question 25 English
A
$$\Delta $$
B
$${\Delta \over 2}$$
C
$${{{\Delta ^2}} \over {12}}$$
D
$${\Delta \over L}$$
3
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
A symmetric three-level midtread quantizer is to be designed assuming equiprobable occurrence of all quantization levels.

If the input probability density function is divided into three regions as shown in figure, the value of 'a' in the figure is

GATE ECE 2005 Communications - Noise In Digital Communication Question 27 English
A
$${1 \over 3}$$
B
$${2 \over 3}$$
C
$${1 \over 2}$$
D
$${1 \over 4}$$
4
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
A symmetric three-level midtread quantizer is to be designed assuming equiprobable occurrence of all quantization levels.

The quantization noise power for the quantization region between –a and +a in the figure is

A
$${4 \over 81}$$
B
$${1 \over 9}$$
C
$${5 \over 81}$$
D
$${2 \over 81}$$
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