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A software-defined optical Tx is designed and demonstrated generating signals with various formats and pulse-shapes in real-time. Special pulse-shapes such as OFDM or Nyquist signaling were utilized resulting in a highly efficient usage of the available fiber channel bandwidth. This was achieved by parallel data processing with high-end FPGAs. Furthermore, highly efficient Rx algorithms for carrier and timing recovery as well as for polarization demultiplexing were developed and investigated.

Optische Nachrichtentechnik, Kohärente Systeme, Digitale Signalprozessierung, Echtzeitfähige Sender und Empfänger, Parallele Prozessierung mit FPGA, Optical communications, coherent systems, digital signal processing, real-time transmitters and receivers, parallel processing with FPGA