to model on the software Optisystem the various standards

[mafa]

optisystem software

I want to model on the software Optisystem the various standards, using a VCSEL laser at 850nm, a multimode fiber 300 m in length and a photodetector pin.

GSM:
Carrier 2 GHz 900 MHz
GMSK modulation

UMTS:
2GHz carrier
QPSK modulation
Debit 3.84Msyn / s

DPRS:
1.88GHz carrier
Modulation pi / 4 DQPSK
Debit 1.152Msyn / s

DPRS
1.88GHz carrier
Modulation pi / 8 D8PSK
Debit 1.152Msyn / s


IEEE 802.11a IEEE
5825 GHz carrier
Modulation 64QAM - OFDM
Throughput 54 Mbit / s

IEEE 802.11b
2.412GHz Carrier
CCK modulation - DSSS
Speed 11 Mbps.
I have already started, but I can not find the constellation diagram and the eye and to transmit the VCSEL, fiber optics and also pin PHOTODETECTOR no signal.
Does someone can help me? Thank you very much.

 

[kdfeifeng]

ads optisystem

hi，I just do the job what you have done , but I also have many promblems during the work.
I think all the signals you want to transmit are digital signals, and, in my opinion, the system you want to build is a analog system. So the most important part of the system is how the signals modulate the VCSEL laser!

Best regard ! And I hoped make a friend with you! Could you tell me your MSN,and mine is kdfeifeng@hotmail.com. Thanks

 

[maejchi]

which one is better??...using ideal MUX and DEMUX with optical filter for each user or WDM MUX and DEMUX without any optical filter??...a fellow of mine said the latter reduce cost aka less money...does that mean the latter design is better than the first just because of the cost??...

 

[sunahm]

Re: optisystem software

I want to model on the software Optisystem the various standards, using a VCSEL laser at 850nm, a multimode fiber 300 m in length and a photodetector pin.

GSM:
Carrier 2 GHz 900 MHz
GMSK modulation

UMTS:
2GHz carrier
QPSK modulation
Debit 3.84Msyn / s

DPRS:
1.88GHz carrier
Modulation pi / 4 DQPSK
Debit 1.152Msyn / s

DPRS
1.88GHz carrier
Modulation pi / 8 D8PSK
Debit 1.152Msyn / s


IEEE 802.11a IEEE
5825 GHz carrier
Modulation 64QAM - OFDM
Throughput 54 Mbit / s

IEEE 802.11b
2.412GHz Carrier
CCK modulation - DSSS
Speed 11 Mbps.
I have already started, but I can not find the constellation diagram and the eye and to transmit the VCSEL, fiber optics and also pin PHOTODETECTOR no signal.
Does someone can help me? Thank you very much.

it's ok for you because you already started..it's bad for me because I don't know where to start...