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Optiwave software can be used in different industries and applications, including Fiber Optic Communication, Sensing, Pharma/Bio, Military & Satcom, Test & Measurement, Fundamental Research, Solar Panels, Components / Devices, etc..
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Optiwave software can be used in different industries and applications, including Fiber Optic Communication, Sensing, Pharma/Bio, Military & Satcom, Test & Measurement, Fundamental Research, Solar Panels, Components / Devices, etc..
Download our 30-day Free Evaluations, lab assignments, and other freeware here.
dear colleges,
I am trying to simulate QAM4-OFDM WDM PON system.
BER tester is utilized in the OFDM part .
the system shows the EVM but always it shows BER=zero and it doesn’t realistic.
the input signals are CW 193.1 THz 193.16, 193.2, 193.26 THz, line width is 0.1 MHz.
the system speed is 10 Gb/s. is the line width of the CW laser source has the effect on the BER appearance? or what?
your help is highly appreciated.
Hello,
You may have some EVM value while the BER is zero. You may check the SER, it should be zero too.
Regards,
Ahmad
Yes SER is zero also whenever BER is zero.
1- what is the best bitrate to configure and evaluate the OFDM QAM4 system based on?
because when I increase the bitrate the BER is increasing with SMF distance (take the symbol rate half of the bitrate because I am using QAM 4)
2- if I took the one span (10km SMF, 2km DCF) should I include the length of the DCF in the OFDM demodulator or just the SMF?
if NO, then if I increase the span to 20 the DCF will be 40km is it ok to not include its length?!
Should I put a value in the OFDM POWER in the OFDM modulator?
Yes, you need to specify the power in the OFDM Modulator. This will affect the transmission characteristics.
Regards,
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