2. simulation of data traffic and video traffic.pdf

8/9/2019 2. SIMULATION OF DATA TRAFFIC AND VIDEO TRAFFIC.pdf

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AIM:

To simulate the data traffic for multiple users and to obtaini. Time slot vs bandwidth plot.

ii. Time slot vs error rate plot.

iii. The optimum buffer size for which error rate will be less than stipulated value.

REQUIREMENTS:

1. MATLAB

2. PERSONAL COMPUTER

ALGORITHM:

1. Start

2. Assigning user and channel.

3. Random matrix is generated. Range is given as (0-50).

4. Bit rate is calculated.

5. If the Ton [[0],[t]] is in between 0 and 2 , then d is used.6. If it is in between 2 and 5, then d (2) is used. If total is calculated d(4) is used if it is bit 8

and 5.

7. Thus, error is calculated.

8. G (t) is more than 1.5 Mbps than error has occurred (or) error is not occurred.

9. Stop

THEORY:

A traffic generation model is a stochastic model of traffic flow or data sources in a

communication network, such as a cellular network or a computer network. A packet generation

model is a traffic generation model of the packet flows or data sources in a packet-switched

network. For example, a web traffic model is a model of the data that is sent or received by a

Ex. No.2.(a) GENERATION OF DATA TRAFFIC Date:


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user's web-browser. These models are useful during development of telecommunication

technologies, to analyze the performance and capacity of various protocols, algorithms and

network topologies. There are three types of data that are used to produce pages for comments.

Information Data:

This is also known as plain data and enables the pages to be created which comprise strings

of fixed sized character form a limited character set.

Formatted Data:

This is also known as rich data and enables pages and complete documents to be created

which comprise of strings of the characters of different styles sizes and shapes with tables,

graphics and images inserted at appropriate points.

Hyper Data:

This enables an integrated set of the documents to be crated which have defined linkages

between them.


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PROGRAM:-

clear all; close all;clc;

% Get the no of useruse=input('enter the no of user:');%G the no of time slotts=input('enter the no of time slot:');on=0.35;ton=zeros(use,ts);n=ton;for i=1:usefor j=1:ts

ton(i,:)=poissrnd((on*10),1,ts);if (ton(i,j)>=3.5)

n(i,j)=1;endend

endtest=randint(use,ts,[1,1000]);data=n;for i=1:use

for j=1:tsif n(i,j)==1

if test(i,j)>=1 & test(i,j)980 & test(i,j)990 & test(i,j)


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%TIME SLOT VS ERROR RATEe=zeros(1,ts);

bm=1540000;for i=1:ts

if d(i)>bme(i)=d(i)-bm;end

endfigure(2);

bar(e);xlabel('time slot');ylabel('error rate(bps)');avg=sum(e')/ts;

ber=avg/bm; buff=0;

disp('average bit error without buffering:');disp(ber);while ber>1e-6

buff=buff+10; bm=bm+10;for i=1:ts

if e(i)>0e(i)=d(i)-bm;

endends=sum(e');

ber=s/(ts*bm);enddisp('bit error rate with buffer:');disp(ber);disp('optinum buffer size:');disp(buff);


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OUTPUTEnter the no of user: 80

Enter the no of time slot: 120

Average bit error without buffering:

0.6274

Bit error rate with buffer:

9.8282e-007

Optimum buffer size:

1851600


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SAMPLE OUTPUT:

0 20 40 60 80 100 120 1400

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2x 10

6 TIME SLOT VS ERROR RATE

time slot in seconds

e r r o r r a t e i n

b p s

0 20 40 60 80 100 120 1400

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2x 10


time slot in seconds

e r r o r r a t e i n b p s


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EXERCISE

GENERATION OF DATA TRAFFIC:

Enter the no of user:

Enter the no of time slot:

Find the Error rate with buffer

Find the Average errorwithout buffering

Find the Optimum buffer

size

RESULT:

Thus the data traffic was simulated and the following results obtained.

i. Time slot Vs bandwidth plot.

ii. Time slot Vs error rate plot.



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AIM:To simulate the video traffic for multiple users and to obtain

i. Time slot vs bandwidth plot.



REQUIREMENTS:

1. MATLAB

2. PERSONAL COMPUTER

ALGORITHM:

1. Start the program.

2. Takes the time slot value from 1 to 20.

3. Set the data rate from 5 to 6 Mbps.

4. For 5 to 6 Mbps, check for self contained JPEG encoded still pictures

5. For 3 to 4 Mbps, find out predictive frames

6. For 2 to 3 Mbps, find out the unidirectional frame which is the difference between the last

and next frame.

7. Plot the graph between time slots x axis and data rate in Mbps along y axis

8. Stop.

THEORY:

The Moving Pictures Experts Group abbreviated MPEG is part of the International

Standards Organization (ISO), and defines standards for digital video and digital audio. The primal task of this group was to develop a format to play back video and audio in real time from

a CD1. Meanwhile the demands have raised and besides the CD, the DVD2 needs to be

supported as well as the transmission equipments like satellites and networks. All this

operational uses are covered by a broad selection of standards. Well known are the standards

Ex. No.2.(b) GENERATION OF VIDEO TRAFFIC Date:


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MPEG-1, MPEG-2, MPEG-4 and MPEG-7. Each standard provides levels and profiles to

support special applications in an optimized way.

MPEG-2 video is an ISO/IEC3 standard that specifies the syntax and semantics of an

enclosed video bit stream. These include parameters such as bit rates, picture sizes and

resolutions which may be applied, and how it is decoded to reconstruct the picture. The range of

possibilities of the MPEG-2 standard is so wide that not all features of the standard are used for

all applications. MPEG-2 forms the heart of broadcast-quality digital television for both

standard-definition and high-definition television (SDTV and HDTV). MPEG-2 video was

designed to encompass MPEG-1 and to provide high quality with interlaced video sources at bit-

rates in the range of 4-30 Mbit/s.

H.264/AVC is the latest joint project of the ITU-T VCEG and ISO/IEC MPEG. The

H.264/AVC design covers a Video Coding Layer (VCL) and a Network Adaptation Layer

(NAL). Although the VCL design basically follows the design of prior video coding standards

such as MPEG-2, H.263, and MPEG-4, it contains new features that enable it to achieve a

significant improvement in compression efficiency in relation to prior coding standards.


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PROGRAM:-

clear all;close all;clc;

% Get the Number of Useruse=input('enter the no of user:');% Get the Number of time slotts=input('enter the no of time slot:');on=0.35;ton=zeros(use,ts);n=ton;for i=1:usefor j=1:ts

ton(i,:)=poissrnd((on*10),1,ts);if (ton(i,j)>=3.5)

n(i,j)=1;end

endendtest=randint(use,ts,[1,1000]);data=n;for i=1:use

for j=1:tsif n(i,j)==1

if test(i,j)>=1 & test(i,j)bm


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e(i)=d(i)-bm;end

endfigure(2);

bar(e);

xlabel('time slot');ylabel('error rate(bps)');avg=sum(e')/ts;

ber=avg/bm; buff=0;disp('Average bit error without buffering:');disp(ber);while ber>1e-6

buff=buff+10; bm=bm+10;for i=1:ts

if e(i)>0e(i)=d(i)-bm;end

end

s=sum(e'); ber=s/(ts*bm);enddisp('Bit error rate with buff:');disp(ber);disp('Optimum buffer size:');disp(buff);


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OUTPUT:

Enter the no of user: 60

Enter the no of time slot: 100

Average bit error without buffering:0.2464

Bit error rate with buff:

9.8120e-007

Optimum buffer size:

1211730


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SAMPLE OUTPUT

0 20 40 60 80 100 1200

2

4

6

8

10

12

14

16

18x 10


Time Slot in seconds

E r r o r R a t e i n b p s

0 20 40 60 80 100 1200

0.5

1

1.5

2

2.5

3

3.5x 10

6 TIME SLOT VS BANDWIDTH

Time slot in seconds

B a n d w

i d t h i n b p s )


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EXERCISE

GENERATION OF VOICE TRAFFIC:

Enter the no of user:

Enter the no of time slot:

Find the Error rate with buffer

Find the Average errorwithout buffering

Find the Optimum buffersize

RESULT:

Thus the multiple rate video traffic was simulated for multiple users and the following

results obtained.

i. Time slot vs bandwidth plot.



2. simulation of data traffic and video traffic.pdf

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