Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35887
Title: Low-complexity carrier phase recovery for square M-QAM Based on S-BPS algorithm
Authors: Zhou, X
Lu, C 
Lau, APT 
Long, KP
Keywords: Carrier phase recovery
Coherent optical system
Quadrature amplitude modulation (QAM)
Issue Date: 2014
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE photonics technology letters, 2014, v. 26, no. 18, p. 1863-1866 How to cite?
Journal: IEEE photonics technology letters 
Abstract: Minimum distance blind phase search (BPS) algorithm has good tolerance to laser linewidth but with high computational complexity. In this letter, a novel substitution algorithm, i.e., symmetry BPS (S-BPS) is proposed for arbitrary square M-ary quadrature amplitude modulation (M-QAM) coherent optical systems. Based on the symmetry of square M-QAM, it can reduce the complexity directly by simplifying the phase error detection in the real plane and without multiplication. Taking square 4-QAM, 16-QAM, and 64-QAM as examples, the effectiveness of the proposed S-BPS algorithm is demonstrated by numerical simulations.
URI: http://hdl.handle.net/10397/35887
ISSN: 1041-1135
DOI: 10.1109/LPT.2014.2332358
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