Modulation-format-independent blind phase search algorithm for coherent optical square M-QAM systems | Zendy

Xian Zhou | Zendy; Kangping Zhong | Zendy; Yuliang Gao | Zendy; Chao Lü | Zendy; Alan Pak Tao Lau | Zendy; Keping Long | Zendy

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Modulation-format-independent blind phase search algorithm for coherent optical square M-QAM systems

Author(s) -

Xian Zhou,

Kangping Zhong,

Yuliang Gao,

Chao Lü,

Alan Pak Tao Lau,

Keping Long

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.024044

Subject(s) - quadrature amplitude modulation , qam , computer science , phase modulation , modulation (music) , optics , algorithm , phase shift keying , digital signal processing , pulse amplitude modulation , polarization division multiplexing , multiplexing , electronic engineering , signal processing , physics , telecommunications , phase noise , bit error rate , engineering , computer hardware , decoding methods , pulse (music) , detector , acoustics

Modulation format independence is one of the key challenges in digital signal processing (DSP) techniques for future elastic optical transmissions. We proposed a modulation-format-independent blind phase search (MFI-BPS) algorithm for square M-ary quadrature amplitude modulation (M-QAM) systems, in which modulation format recognition (MFR) and carrier phase estimation (CPE), are included and implemented both in a feed-forward manner. Comprehensive simulation and the experimental studies on 224 Gbit/s polarization multiplexing 16-QAM (PM-16QAM) systems demonstrate the feasibility and the effectiveness of the proposed MFI-BPS algorithm.

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