7/21/2019 CS 6304 ANALOG AND DIGITAL COMMUNOCATION AU APRIL/MAY 2015 QUESTION PAPER

http://slidepdf.com/reader/full/cs-6304-analog-and-digital-communocation-au-aprilmay-2015-question-paper 1/1

Reg.

No.

:

Question P4per

Cod

e

z

77OgG

Third

Semester

.

C

vOIIlDUf,ef Dclence And

H;ncnr.roarrno

omputer

Science

and

Engineering

cs

6304

-

ANALOG

1ND

DTGTTAL

COMMUNTCATTON

(common

to

Information

Technolory,

also

common

to

Fourth

semester

Biomedical

En

girleering)

/

 

Answer

ALL

questions.

PARTA-(10

x2=2}marks)

Maximum

:

100 marks

1:

Draw

the

spectrum

of

an

{M

signal

.

2.

What

is

the

bandwidth

of the

FM

signal

if

the

modulator

is

25

Kt{z

per

volt?

.

fime

: Three

hours

F,

freqdency

sensitivity

of

the

.,\

3.

Ske,tch

the

QPS{

signal

for

the

bhTy

sequence

11001100

:

l

4

Compare

Q?SK

and 16

PSK

signal

in

terms.of

bandwidth.

5.

State

the

need.

for

companding

in

a

pCM

system.

:

,

6.

Mention

how

PPM

is

derived

from

pWM

7

-

An

event

has

six

possible

outcomes

with

probabiliti

es

.Ll2,ll4,llg,llI6,Ilg1-,

1/32.

Find

the entropy

of the

sy-stem-

8.

What

is

mutual

information?

 .

9.

What

is near

far

effect

in

a

CDMA

system?

10.

Define

the

term

frequency

reuse

factor

in

a

cellular

communication

system.

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