Low-Complexity Carrier Phase Recovery for Square M-QAM Based on S-BPS Algorithm

Author

Xian Zhou ; Chao Lu ; Lau, Alan Pak Tao ; Keping Long

Author_Institution

Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Hong Kong, China

Volume

26

Issue

18

fYear

2014

fDate

Sept.15, 15 2014

Firstpage

1863

Lastpage

1866

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.

Keywords

communication complexity; error detection; light coherence; numerical analysis; optical communication; optical modulation; quadrature amplitude modulation; 16-QAM; 64-QAM; S-BPS algorithm; computational complexity; laser linewidth; low-complexity carrier phase recovery; minimum distance blind phase search algorithm; numerical simulations; phase error detection; square 4-QAM; square M-QAM; square M-ary quadrature amplitude modulation coherent optical systems; substitution algorithm; symmetry BPS algorithm; Adaptive optics; Bit error rate; Complexity theory; Optical modulation; Optical receivers; Quadrature amplitude modulation; Signal processing algorithms; Carrier phase recovery; coherent optical system; quadrature amplitude modulation (QAM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2332358

Filename

6846279