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Generation and coherent detection of QPSK signal using a novel method of digital signal processing
Zhao, Yuan1,2; Hu, Bingliang1; He, Zhen-An1,2; Xie, Wenjia3; Gao, Xiaohui1
Department光谱成像技术实验室
2018-02-10
Source PublicationMODERN PHYSICS LETTERS B
ISSN0217-9849
Volume32Issue:4
Contribution Rank1
AbstractWe demonstrate an optical quadrature phase-shift keying (QPSK) signal transmitter and an optical receiver for demodulating optical QPSK signal with homodyne detection and digital signal processing (DSP). DSP on the homodyne detection scheme is employed without locking the phase of the local oscillator (LO). In this paper, we present an extracting one-dimensional array of down-sampling method for reducing unwanted samples of constellation diagram measurement. Such a novel scheme embodies the following major advantages over the other conventional optical QPSK signal detection methods. First, this homodyne detection scheme does not need strict requirement on LO in comparison with linear optical sampling, such as having a flat spectral density and phase over the spectral support of the source under test. Second, the LabVIEW software is directly used for recovering the QPSK signal constellation without employing complex DSP circuit. Third, this scheme is applicable to multilevel modulation formats such as M-ary PSK and quadrature amplitude modulation (QAM) or higher speed signals by making minor changes.
KeywordOptical Coherence Quadrature Phase-shift Keying Digital Signal Processing
DOI10.1142/S0217984918501038
Indexed BySCI
Language英语
WOS IDWOS:000424876900014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30769
Collection光谱成像技术实验室
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Key Lab Spectral Imaging Technol, Xian 710119, Shaanxi, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Xian Commun Inst, Xian 710106, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yuan,Hu, Bingliang,He, Zhen-An,et al. Generation and coherent detection of QPSK signal using a novel method of digital signal processing[J]. MODERN PHYSICS LETTERS B,2018,32(4).
APA Zhao, Yuan,Hu, Bingliang,He, Zhen-An,Xie, Wenjia,&Gao, Xiaohui.(2018).Generation and coherent detection of QPSK signal using a novel method of digital signal processing.MODERN PHYSICS LETTERS B,32(4).
MLA Zhao, Yuan,et al."Generation and coherent detection of QPSK signal using a novel method of digital signal processing".MODERN PHYSICS LETTERS B 32.4(2018).
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