Hardware-Efficient Phase Estimation for Digital Coherent Transmission With Star Constellation QAM

In order to build optical transmission systems for 100 Gb/s and above on a single wavelength division multiplexing channel, transition from quadrature phase-shift keying (QPSK) to higher quadrature amplitude modulation (QAM) formats seems to be inevitable. Instead of the usual square constellation Q...

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Bibliographic Details
Published in:IEEE photonics journal 2010-04, Vol.2 (2), p.174-180
Main Authors: Hoffmann, S., Wordehoff, C., Al-Bermani, A., El-Darawy, M., Puntsri, K., Ruckert, U., Noe, R.
Format: Article
Language:English
Subjects:
Channels
Coherence
Computer simulation
Constellations
Construction
Digital signal processing
Fiber optics systems
Format
homodyning
Optical fiber polarization
Optical modulation
Optical receivers
Phase estimation
Phase noise
Phase shift keying
Quadrature amplitude modulation
Quadrature phase shift keying
Signal processing algorithms
Stars
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Summary:In order to build optical transmission systems for 100 Gb/s and above on a single wavelength division multiplexing channel, transition from quadrature phase-shift keying (QPSK) to higher quadrature amplitude modulation (QAM) formats seems to be inevitable. Instead of the usual square constellation QAM, we focus on regular star constellation QAM formats and present a hardware-efficient phase-estimation algorithm that is suitable for all regular star constellations, together with preliminary simulation results.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2010.2044784