[Yahaya IdrissParticipant]

Ok Thanks for the information.

[Yahaya IdrissParticipant]

Thanks you. Can I find any component in optiSystem that can convert dBm to dB loss. I want to add in dBm to dB in the FSO component as an attenuation factor. For instance equivalent of -21.76dBm in dB loss.
Thanks

[Yahaya IdrissParticipant]

Ok Thanks for your contributions. I think practically commercial white-LEDs cannot go beyond 10m although it depends on the power of the LED.
Thanks

[Yahaya IdrissParticipant]

Hi Alistu
what I expect is a drastic change in BER as the transmission distance is varies. for instance like from 2.3789e-009 to 9.1276e-009 of 3567e-008 not just 1.3667e-009 to 1.2678e-009 which is negligible cannot be shown on the graph.
Thanks

[Yahaya IdrissParticipant]

Hi Alistu
Find the shortcut were Geometric Loss box unchecked was discussed by Damian marek. http://staging.optiwave.com/forums/topic/awgn-noise/
Actually I intend to use bit rates of 622Mbps to analyzer the performance of both indirect sunlight and Fluorescent lamp individually as attenuation factors on indoor communication channel. The BER analyzer will be use to evaluate out how far this signal can go without any degradation, i.e transmission distance cover.(by plotting a graph of BER against transmission distance). I hope you have get the gist of this project.
Thanks

[Yahaya IdrissParticipant]

Hi Alistu
I am back again. I have increased the input power of the LED and there is improvement but I find out that there is increase in optical power after passing through the FSO component. Therefore, according to Damian marek he made mentioned in the forum on the topic of AWGN noise where he suggest that the geometrical Loss box in the FSO component should be unchecked. I did so and the problem of increase optical power is solve. However, the result at the BER change very little even when you increased the distance and change the background noise at the AWGN channel. Ideally, in VLC small change in distance like 1m to 2m supposed to show a great change at the BER. Kindly help me to rectify this problem.
Thanks for sparing your time in assisting me.

[Yahaya IdrissParticipant]

Hi Alistu
Thanks for the observation. so you mean I should not use in-line optical amplifier?. Generally you are saying that the system has low input optical power from the LED. I will try to implement your suggestion to see the impact.
Thanks for your assistance.

[Yahaya IdrissParticipant]

Find attached my project file. I want to integrate both the indoor VLC system and OCDMA using the attached file with an ambient light as AWGN.
I learned from the forum that I can unchecked the geometric loss in the FSO so that the output power signal will not be amplified, but then the signal cannot go beyond 1m if all loss are added. The BER analyzer result is always 1.
Thanks for your assistance.

[Yahaya IdrissParticipant]

Dear Ravil and Sam Sung
Thank you all for the Information. I am Sorry I was offline for sometime. I will visit the links.
I am grateful

Thanks
Yahaya Idriss

[Yahaya IdrissParticipant]

Dear Damian
Thanks for you suggestions.
Please can you kindly check my simulation setup if I am doing the correct thing. The overview is to setup Indoor VLC link with OCDMA to suppressed an ambient light noise on the FSO Channel. I attached the simulation file for your perusal.
Thanks.
Yahaya Idriss