Scintillation Parameter in FSO

[Remo De Suza]

Hi everyone.

Is there a way to in cooperate or simulate this effect in Optisystem. Also yes does any one have MATLAB code for any channel models used in FSO.
I need help.

Regards
Remo

[prakash jat]

hi remo
enable scintillation mode in enhance option

[Remo De Suza]

Hi Prakash.
I appreciate your help. can you help me out in this. Where exactly do i find the option?
Can you share the snapshot of the layout please i would appreciate that. Thanking you!

Thanks & regards
Remo

[prakash jat]

in enhanced mode option

[Remo De Suza]

Thank you Prakash for all the help. It has been very very helpful indeed.
What distance are you working with. And also what is the transmitter aperture and receiver aperture you have taken for your system?

Thanks and regards
Remo

[prakash jat]

welocome remo

all parameter would be taken as standard ( you can’t choose best for best parameter like ber)

[Remo De Suza]

Hi Prakash.

What do you refer to by “you can’t choose best for best parameter like BER”. I couldn’t get it exactly. Please can you brief me a little about it. Thanking you.

Thanks and Regards
Remo

[prakash jat]

hi remo
because when you take min. line width obviously it will give best result but we redistricted to use standard parameter as well as power , divergence , wavelength etc.

[Rajguru M. Mohan]

Hi Remo,
First i want to discuss different channel models used in FSO.
They are as:
Gamma Gamma Channel
Log Normal channel
Negative Exponential Channel
K channel
I-K Channel

[Rajguru M. Mohan]

Hi Remo,
The corresponding code for different channel used in FSO are:
The code for negative exponential function as:
clear all
close all
% subplot (nrows,ncols,plot_number)
x=0:.1:2*pi; % x vector from 0 to 2*pi, dx = 0.1

subplot(2,2,3) % plot negative exponential function
plot(x,exp(-x));

MATLAB code for log normal:
clear all
close all
x = (10:1000:125010)’;
y = lognpdf(x,log(20000),1.0);

figure;
plot(x,y)
h = gca;
h.XTick = [0 30000 60000 90000 120000];
h.XTickLabel = {‘0′,’$30,000′,’$60,000’,…
‘$90,000′,’$120,000’};
Hope this will help you.

[Remo De Suza]

Hello Rajguru.

Thank you for the matlab code. I had already got it. Anyways i appreciate you for your efforts.

Regards
Remo

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