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4 QAM OFDM

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(joined July 2016)
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Hello All
I am working on dispersion and nonlinear characteristics compensating fibers. I am sending 5GHz 4 QAM signal for the length of 100 km for SMF and 20Km for DCF. At receiving side, the constellation diagram is not what i’ve expected .Here,i’m attaching the constellation diagram and my project, How can i improve my constellation diagram ?

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    • #41156

      Hello All
      I am working on dispersion and nonlinear characteristics compensating fibers. I am sending 5GHz 4 QAM signal for the length of 100 km for SMF and 20Km for DCF. At receiving side, the constellation diagram is not what i’ve expected .Here,i’m attaching the constellation diagram and my project, How can i improve my constellation diagram ?

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