Search Results for 'DPSK'

[Ahmad AtiehModerator]

Dear Sun,
Typically, delayed interferometers are used in DPSK. I am not sure if the MZDI would work for QPSK. However, my guess the operation depends on the applied delay in both arms of the coherent detectors if it would work. You may email me your project as zip file to check it. My email is ahmad.atieh@optiwave.com.
Regards,
Ahmad

[Adramane ASSOUMANA]

Dear Sir,
please how can i design a subcarrier intensity modulator (BPSK-SIM, DPSK-SIM)in optisystem 20

[Vamsi mohanParticipant]

Dear Ahmed, I tried your advice.But still not able to connect Rx subsystem. I tried to remove the subsystem for RX by directly connecting the components,
then also not able to connect. Here I tried for DPSK. somebody have similar Tx and Rx blocks for QPSK, BPSK, GMSK, PSK, MSK etc. Please share.-Vamsy

[Vamsi mohanParticipant]

Dear Ahmed, I tried your advice.But still not able to connect Rx subsystem. I tried to remove the subsystem for RX by directly connecting the components,
then also not able to connect. Here I tried for DPSK. somebody have similar Tx and Rx blocks for QPSK, BPSK, GMSK, PSK, MSK etc. Please share.-Vamsy

[Vamsi mohan]

demux 1×4 not able to connect to DPSK Tx and Mux 4×1 not able to connect Dpsk Rx

[Dyan Anggreani]

Hi all
I am working on radio over fiber using SCM/WDM with DPSK and CPFSK schemes, I am analyzing the effect itteration of fiber length and bit rate. But i am having some problem in getting the correct output can you please help me to rectify my problem?. My project simulation picture is attached with this query.

[Agatha Binka]

Hello everyone

Does anyone know How to determine the threshold and output amplitude value at M-ary threhold?

In https://optiwave.com/resources/applications-resources/optical-system-digital-modulation-dpsk/ the defined threshold amplitude value is – 0.85, -0.353, 0.353 and 0.85. I don’t understand how that value is obtained

[Agatha Binka]

Hello everyone

Does anyone know how to determine the threshold and output amplitude at M-ary threhold?

I didn’t understand why in this link (https://optiwave.com/resources/applications-resources/optical-system-digital-modulation-dpsk/) the defined threshold amplitude is – 0.85, -0.353, 0.353 and 0.85?

[Justin HarrottParticipant]

I am not finding these examples.

Specifically, where are the project files referenced in the Digital Modulation – DPSK tutorial?

Thank you

[Ahmad AtiehModerator]

Dear Muhammad,
You may find many examples about DPSK and PAM signal modulation in OptiSystem Example Directory at
C:\Users\xxxxxxxx\Documents\OptiSystem 15.2 Samples\Advanced modulation systems\
Regards,
Ahmad

[muhammad jawad]

Dear all
Hope you all will be fine
Please let me know how to generate DPSK and PAM signals in optical domain using Optisystem?Please post .osd file or screen shot of the simulation please
regards

[Satinder Kaur]

I am using LPF at the receiver terminal in 2.5 Gbit/s FSO link. Can someone please tell me what should be the cutoff frequency of LPF? In some example it is 0.75*Symbol rate and in some examples it is 0.75* bitrate. I am using NRZ and DPSK modulation schemes. The Q factor varies greatly if i change from symbol rate to bitrate

Thanks in advance…

[GAYATHRI P V]

Can anyone please explain the transmitter and receiver section of DPSK modulation?

Attachments:

1. 

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[Yuchao Zhang]

Hi, everyone. I’m working on a system which need generate OSSB (Optical Single Side Band) singnal with LiNb MZM using DPSK modulation.
Can you help me? Thanks very much! (Optisystem13 preferred)

[Panchami SParticipant]

I have tried dpsk 33% rz and 66% rz.But i am not getting any output.Will someone pls help in rectifying it.I have attached my osd file

Attachments:

1. DPSK-33-rz-without-pmd.zip