Demonstration of a carrier frequency offset estimator for 16-/32-QAM coherent receivers: a hardware perspective
نویسندگان
چکیده
منابع مشابه
Synchronous Demodulation of Coherent 16-QAM with Feedforward Carrier Recovery
Coherent optical transmission allows for improved bandwidth utilization and impairment compensation of existing optical fiber links and is a key for future communication systems with transmission rates of 112 Gb/s and above. In recent years quadrature phase shift keying (QPSK) was the preferred modulation format because of its robustness on long-haul links [1]–[3]. However, for metropolitan are...
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In this paper a novel method to realize the synchronization process in case of 32-QAM will be presented. The system is based on the times-n carrier recovery and doesn’t depend on data decision. Starting from the Park and Ahn method which tracks, after a non linearity, the carrier recovery only for the in-phase symbols of a 16-QAM modulation, the proposed method combines a Phase Lock Loop and a ...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2018
ISSN: 1094-4087
DOI: 10.1364/oe.26.004853