×

Adaptively coding and modulating signals transmitted via nonlinear channels

  • US 9,077,508 B2
  • Filed: 11/15/2012
  • Issued: 07/07/2015
  • Est. Priority Date: 11/15/2012
  • Status: Active Grant
First Claim
Patent Images

1. An optical communications network, comprising:

  • an optical transmitter, further comprising;

    a forward error correction (FEC) encoder;

    a precoder; and

    a modulator;

    an optical receiver, further comprising;

    a detector;

    a FEC decoder;

    a decision block; and

    an error check block;

    an optical fiber connecting the optical transmitter and the optical receiver;

    a first analyzer, connected between the optical transmitter and the optical receiver, configured to generate an extrinsic information transfer (EXIT) chart, and adapting the FEC encoder according to the EXIT chart; and

    a second analyzer, connected between the optical transmitter and the optical receiver, configured to generate nonlinear statistics of an optical channel in the optical fiber between the optical transmitter and the optical receiver, and adapting, the precoder and the modulator according to the nonlinear statistics.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×