Low-complexity carrier phase estimation for M-ary quadrature amplitude modulation optical communication based on dichotomy | Zendy

Xu Yan | Zendy; Changqing Cao | Zendy; Wenrui Zhang | Zendy; Xiaodong Zeng | Zendy; Zhejun Feng | Zendy; Zengyan Wu | Zendy; Xiyuan Su | Zendy; Ting Wang | Zendy

Open Access

Low-complexity carrier phase estimation for M-ary quadrature amplitude modulation optical communication based on dichotomy

Author(s) -

Xu Yan,

Changqing Cao,

Wenrui Zhang,

Xiaodong Zeng,

Zhejun Feng,

Zengyan Wu,

Xiyuan Su,

Ting Wang

Publication year - 2020

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.394330

Subject(s) - quadrature amplitude modulation , qam , computer science , computational complexity theory , algorithm , modulation (music) , amplitude , phase (matter) , optical communication , phase modulation , optics , amplitude modulation , quadrature (astronomy) , compensation (psychology) , amplitude and phase shift keying , bit error rate , telecommunications , physics , phase noise , frequency modulation , bandwidth (computing) , psychology , decoding methods , quantum mechanics , acoustics , psychoanalysis

In high-speed optical communication, the blind phase search (BPS) algorithm performs carrier phase estimation better but with higher computational complexity (CC), bringing a larger computational burden to the digital signal processing unit. In this paper, a new low-complexity CPE algorithm (DBPS) is proposed for M-ary quadrature amplitude modulation (M-QAM) formats. It uses the BPS algorithm to estimate the compensation phase interval, before using dichotomy to quickly and accurately determine the compensation phase value. Simulation results show the CC (multiplication / addition) of DBPS is reduced by 2.79 / 2.84 (16-QAM), 5.35 / 5.45 (64-QAM), and 2.98 / 3.01 (128-QAM) than that of BPS, and DBPS has a smaller phase tracking error variance. DBPS can relax the limitation of optical communication rate caused by high-speed data operations.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research