Phase-Noise-Tolerant Two-Stage Carrier Recovery Concept for Higher Order QAM Formats

Phase-Noise-Tolerant Two-Stage Carrier Recovery Concept for Higher Order QAM Formats

In this paper, a phase-noise-tolerant two-stage carrier recovery concept for arbitrary quadrature amplitude modulation (QAM) constellations is presented. Possible implementations are evaluated in simulations of square 16-QAM, 64-QAM, and 256-QAM transmission systems, considering fourth-power and dec...

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Veröffentlicht in:IEEE journal of selected topics in quantum electronics 2010-09, Vol.16 (5), p.1210-1216
Hauptverfasser: Pfau, T, Noé, Reinhold
Format: Artikel
Sprache:eng
Schlagworte:
Carriers
Constellations
Feedforward
Hardware
Noise tolerance
Optical distortion
Optical feedback
Optical fiber communication
Optical modulation
Optical receivers
Optical signal processing
phase estimation
Phase noise
Phase shift keying
phase-shift keying (PSK)
Quadrature amplitude modulation
quadrature amplitude modulation (QAM)
Quantum electronics
Recovery
Signal processing algorithms
Simulation
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Beschreibung
Zusammenfassung:In this paper, a phase-noise-tolerant two-stage carrier recovery concept for arbitrary quadrature amplitude modulation (QAM) constellations is presented. Possible implementations are evaluated in simulations of square 16-QAM, 64-QAM, and 256-QAM transmission systems, considering fourth-power and decision-directed carrier recovery for the first stage. The second stage uses QAM feedforward carrier recovery. It is shown that the two-stage concept achieves the same phase noise tolerance as the original QAM feedforward carrier recovery concept, but reduces the required hardware effort by factors of 1.5-3 depending on the order of the QAM constellation.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2009.2034472