OSNR vs BER and Constellation diagram in DP CO OFDM
Hi everyone, I am trying to simulate the Polarization Combiner example given in Optisystem. I got a proper constellation at the receiver side and to observe OSNR vs BER in this system, I added an OSNR component by sweeping its parameters, but min. log of BER value is constantly showed -1000.
Then I replaced PRBS with a BER TEST SET component. In this case, I get variation in BER with respect to OSNR, but the EYE diagram is not proper. Also osnr vs ber is not received correctly.
I referred to other OFDM examples also. Without OFDM (QAM examples), we can add a DSP component (OptiSystem 18.0 Samples\Advanced modulation systems\QAM systems). But the DSP component can not be added in the OFDM system I think.
Ultimately I need to get OSNR vs BER and also proper constellation at the receiver in OFDM system. Kindly help me.
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