DQPSK-Transmitter and Receiver

[ShahidParticipant]

I want to make an optical DQPSK Transmitter and Receiver. What will be the simplest way to create the system?

[ShahidParticipant]

Can I start with a DPSK system and then modify it later for DQPSK using MZM?
Any help from the members requested.

[alistuParticipant]

Hi Shahid,

Q is QPSK is short for “quadrature”, meaning each symbol represents two bits. If this is true, you can implement a simple DPSK system and then change the bits per symbol and symbol rate in the modulation blocks and in global parameters according to DQPSK. You may use MZM to modulate electrical signal into optical signal and upconvert it.

Regards

[Ranjeet KumarParticipant]

hi,
You can refer to optisystem sample file :http://optiwave.com/applications/100-gbps-dp-qpsk-system-with-digital-signal-processing/
If any help, i will try to do.

[ShahidParticipant]

Thanks Ranjeet. I will try to follow your advice.

[Dr. Dhiman KakatiParticipant]

Hi Shahid I am Attaching herewith a very interesting paper, try to implement the schematic and you should get good result As I have got. Here direct detection scheme is used.

Regards,
Dhiman

Attachments:

1. OE-141556_Final-proof1.pdf

+1

[varinder singhParticipant]

hello..
i think qpsk can be used as dpsk …so that you can convert into dqpsk..qpsk only transfer two bits and dpsk transfer only one bit…so you can convert simply into dqpsk..
with regards