Piyawanno, K.; Kuschnerov, M.; Lankl, B. (Federal Armed Forces University Munich, Germany)
Spinnler, B. (Nokia Siemens Networks GmbH & Co. KG, Transport Technology, Munich, Germany)
We propose applications of well-known algorithms for non-data aided spectrum-based frequency offset estimation in optical coherent receivers. The algorithms are independent of the modulation format and robust against channel distortion.