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## WDM Network Blocking Computation Toolbox

version 1.0 (44.9 KB) by

Blocking computation in WDM Networks for three different types of constraints.

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The aim of this toolbox is to compute blocking probabilities in WDM networks. This work was based on [1], [2], [3], [4] and user is referred to those papers for deeper study.

Because WDM networks are circuit switched loss networks blocking may occur because of lack of resources. Also in circuit switched networks many paths use the same links. This toolbox answers the question how different paths with different loads influence on each other and what is the blocking on each of the defined path. Toolbox is capable of computing blocking for three different WDM network types: with no wavelength conversion, with full wavelength conversion and with limited range wavelength conversion. It is worth noting that case for full conversion can be usefull for any circuit switched network without additional constraints (i.e. wavelength continuity constraint in WDM), for example telephone network.

Toolbox contains also scripts for defining network structures (random networks, user defined networks) and traffic matrixes. Three graph algorithms for shortest path computation are also in this toolbox (they are used for traffic matrix creation).

References:
[1] Alexander Birman, "Computing Approximate Blocking Probabilities for a Class of All-Optical Network", IEEE Journal on Selected Areas in Communications, vol. 14, June 1996
[2] Tushar Tripathi, Kumar N. Sivarajan, "Computing Approximate Blocking Probabilities in Wavelength Routed All_optical Networks with Limited-Range Wavelength Conversion", IEEE Journal on Selected Areas in Communications, vol. 18, October 2000
[3] S. Chung, A. Kashper, K.W. Ross, "Computing Approximate Blocking Propabilities for large loss networks", IEEE/ACM Transactions on Networking, vol. 1, 1993
[4] F.P. Kelly, "Routing and capcity allocation in networks with trunk reservation", Matematics of Operation Research, vol. 15, no. 4, 1990
[5] Milan Kovaceviæ, Anthony Acampora, "Benefits of Wavelength translation in All-Optical Clear Channel Networks", IEEE Journal on Selected Areas in Communications, vol. 14, June 1996

luong trinh

THANK O LOT

Siva

### Siva (view profile)

What is work directory? where can i find it. Pls help. Im new to matlab..

Amna Yousaf

moussang gaetan

### moussang gaetan (view profile)

i want this toolbox inside matlab 7.7.0

xc dfc

### xc dfc (view profile)

hai all,
thre is a channel which i can change.
Can any one tell me, channel selection in the program based on what?

wajid

### wajid (view profile)

hi, i am looking for the work directory, and please let me know how i can start running and using this toolbox to create my own design and simulate it. thanks

Hoang-Linh To

### Hoang-Linh To (view profile)

thanks so much, it can be used for optical communication

Sal wa

### Sal wa (view profile)

for example, how can I create .mat file with create_network ?

Sal wa

### Sal wa (view profile)

guys guys, somehow, with my little knowledge about matlab, I managed to install the toolbox.

My request now is: can someone show me how to use the toolbox ?

I am very interested in using the function create-load-uniform. I just want like a sample files and input i can create/add to use the function.

Thanks a lot !

sal wa

### sal wa (view profile)

please can u tell me how to install the toolbox . I kept looking for the toobox directory and work directory and i cant seem to find them.
Also, I don't understand how to change the PATHDEF file. there are 3 of them, which one to choose ??

This is very important to a project I am working on.

Thank you !

sal wa

### sal wa (view profile)

please can u tell me how to install the toolbox . I kept looking for the toobox directory and work directory and i cant seem to find them.
Also, I don't understand how to change the PATHDEF file. there are 3 of them, which one to choose ??

Miroslav

### Miroslav (view profile)

to edit PATHDEF
open ...\MATLAB\R2007b\toolbox\local\
find pathdef.m, edit document like a .txt file

tabarak ali

### tabarak ali (view profile)

I have some problems using this toolbox. Can somebody tell me how do this part:

d) Edit PATHDEF and add at the end of the file:

matlabroot,'\toolbox\wdm;',...
matlabroot,'\toolbox\wdm\examples;',...
matlabroot,'\toolbox\wdm\graphs;',...
matlabroot,'\toolbox\wdm\networks;',...
matlabroot,'\toolbox\wdm\rla;',...
matlabroot,'\toolbox\wdm\simulation;',...
matlabroot,'\work\networks; ',...

Thank you....

any help using this toolbox please

M. A. Farabi

thanks very much

M. A. Farabi

trpe Stojcev

### trpe Stojcev (view profile)

Any help using this toolbox

trpe Stojcev

### trpe Stojcev (view profile)

I have some problems using this toolbox. Can somebody tell me how do this part:

d) Edit PATHDEF and add at the end of the file:

matlabroot,'\toolbox\wdm;',...
matlabroot,'\toolbox\wdm\examples;',...
matlabroot,'\toolbox\wdm\graphs;',...
matlabroot,'\toolbox\wdm\networks;',...
matlabroot,'\toolbox\wdm\rla;',...
matlabroot,'\toolbox\wdm\simulation;',...
matlabroot,'\work\networks; ',...

Thank you....

Kien Nguyen

### Kien Nguyen (view profile)

Great! Thanks

masoud jabbari

Isaias Emiro Perez Morales

Simulacion de una fibra optica tipo monomodo, cuando es sometida a esfuerzos axiales y de elongacion

Henrique Silva

Useful and easy to use.

Kungmeng Lo

Very nice tool. Easy to understand.

sabari raj

excellent

MATLAB 6.5 (R13)