BER in OFDM
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.
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