Ye Wang
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Ye Wang has a total of 24 co-authors. Here are the top co-authors by number of shared publications:
- Yatian Li
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China
3 shared publications - Lin Li
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Dongnanhu Road 3888, Changchun 130033, China
2 shared publications Shijie Gao
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China
2 shared publications- Xueliang Li
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Dongnanhu Road 3888, Changchun 130033, China
2 shared publications - Chao Wang
Hubei Key Laboratory of Advanced Technology for Automotive Components & Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan, Hubei, China
1 shared publication - Di Yao
School of Design, Central Academy of Fine Arts, 100102 Beijing, China
1 shared publication
Latest Publications
- Open Access
- 6 November 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Journal
- Vol. 12 (6) , 1-15
Measurement Approaches and Implementation of a Fading Characterization Tester for Evaluating Optical Turbulent Channels
Optical wireless communication (OWC) systems can exhibit high percentage availability, yet suffering from frequent intensity fades caused by turbulence effects and pointing errors. The intuitive method to character the link is using commercial bit error rate testers (BERT) by measuring the output sequence of the receiver, which provides limited information. Thus we propose the algorithms for measuring the outage and synchronization performance, bit error rate (BER), throughput, and fading statistics. The inputs consist of decoded baseband data sequence and received optical power, so that it's suitable for different modulation formats. Both the bit level and packet level measurements are presented. Then a fading characterization tester (FCT) having these functions is implemented based on a field programmable gate array (FPGA). Our indoor experiment reveals the measurement accuracy of the FCT by comparing the measured results with the derived theoretical ones. Another 1.9km OWC experiment is also carried out. These measured results by FCT are presented, which can not only measure the OWC link, but also help the researchers to improve the system performance, such as the design of error correction approaches like forward error correction, the design of packet based network protocols.
- 6 November 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Journal
- Vol. 12 (6) , 1-15
Open AccessMeasurement Approaches and Implementation of a Fading Characterization Tester for Evaluating Optical Turbulent Channels
Optical wireless communication (OWC) systems can exhibit high percentage availability, yet suffering from frequent intensity fades caused by turbulence effects and pointing errors. The intuitive method to character the link is using commercial bit error rate testers (BERT) by measuring the output sequence of the receiver, which provides limited information. Thus we propose the algorithms for measuring the outage and synchronization performance, bit error rate (BER), throughput, and fading statistics. The inputs consist of decoded baseband data sequence and received optical power, so that it's suitable for different modulation formats. Both the bit level and packet level measurements are presented. Then a fading characterization tester (FCT) having these functions is implemented based on a field programmable gate array (FPGA). Our indoor experiment reveals the measurement accuracy of the FCT by comparing the measured results with the derived theoretical ones. Another 1.9km OWC experiment is also carried out. These measured results by FCT are presented, which can not only measure the OWC link, but also help the researchers to improve the system performance, such as the design of error correction approaches like forward error correction, the design of packet based network protocols.
- Open Access
- 9 August 2019
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Access
- Vol. 7, 110451-110462
Non-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System
In this study, we propose a non-data-aided algorithm of the cycle slip self-correcting carrier phase estimation (CSSC-CPE) which mitigates the cycle slips caused by blind CPE in the coherent wireless optical communication (WOC) system. The CSSC-CPE uses the output of CPE for cumulative averaging and selects the difference$\delta $ between two cumulative average segments as the discriminant parameter. The location and direction of cycle slips are determined by identifying the position and sign of the peak value of$\delta $ . The optimal thresholds for cycle slip detection could be derived from the probability density function (PDF) of$\delta $ obtained by calculation and deduction. Finally, numerical simulations and indoor experiments are carried out. The results show that CSSC-CPE can effectively eliminate cycle slips under weak turbulence condition. Compared with relative non-data-aided cycle slip correction algorithms, the CSSC-CPE achieves a better performance in suppressing the phase noise generated by atmospheric turbulence and laser linewidth, which enhances the accuracy of the cycle slip identification and lowers the SNR requirement when the cycle slip is not allowed.- 9 August 2019
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Access
- Vol. 7, 110451-110462
Open AccessNon-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System
In this study, we propose a non-data-aided algorithm of the cycle slip self-correcting carrier phase estimation (CSSC-CPE) which mitigates the cycle slips caused by blind CPE in the coherent wireless optical communication (WOC) system. The CSSC-CPE uses the output of CPE for cumulative averaging and selects the difference$\delta $ between two cumulative average segments as the discriminant parameter. The location and direction of cycle slips are determined by identifying the position and sign of the peak value of$\delta $ . The optimal thresholds for cycle slip detection could be derived from the probability density function (PDF) of$\delta $ obtained by calculation and deduction. Finally, numerical simulations and indoor experiments are carried out. The results show that CSSC-CPE can effectively eliminate cycle slips under weak turbulence condition. Compared with relative non-data-aided cycle slip correction algorithms, the CSSC-CPE achieves a better performance in suppressing the phase noise generated by atmospheric turbulence and laser linewidth, which enhances the accuracy of the cycle slip identification and lowers the SNR requirement when the cycle slip is not allowed. - Open Access
- 7 December 2018
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Journal
- Vol. 11 (1) , 1-17
Free-Space Optical Communication Using Coherent Detection and Double Adaptive Detection Thresholds
In this paper, On-Off Keying (OOK) free-space optical (FSO) communication with coherent detection and double adaptive detection thresholds (CD-DADT) is proposed. The 3-bit encoding and double adaptive detection thresholds presented in the scheme can significantly improve the system performance, and there is no need of acquiring the instantaneous channel state information (CSI) and probability density function (PDF) of turbulence model. In order to enhance the accuracy of the threshold even further, decision-aided method is offered to set the second detection threshold. The PDFs of the detection thresholds and the average bit error rate (BER) of the system are theoretically derived. Numerical studies show that the performance of the system is comparable to the performance of the idealized adaptive detection system and the loss of signal-to-noise ratio (SNR) performance is only 1 dB at a BER of 10-9 over a lognormal turbulence channel with normalized standard deviation of irradiance σ=0.25 and phase noise with normalized variance $\sigma;_{\oslash}^{2}$ 2=0.07. Hence, this scheme can contribute to the performance improvement of the FSO system and its practical realization.- 7 December 2018
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Journal
- Vol. 11 (1) , 1-17
Open AccessFree-Space Optical Communication Using Coherent Detection and Double Adaptive Detection Thresholds
In this paper, On-Off Keying (OOK) free-space optical (FSO) communication with coherent detection and double adaptive detection thresholds (CD-DADT) is proposed. The 3-bit encoding and double adaptive detection thresholds presented in the scheme can significantly improve the system performance, and there is no need of acquiring the instantaneous channel state information (CSI) and probability density function (PDF) of turbulence model. In order to enhance the accuracy of the threshold even further, decision-aided method is offered to set the second detection threshold. The PDFs of the detection thresholds and the average bit error rate (BER) of the system are theoretically derived. Numerical studies show that the performance of the system is comparable to the performance of the idealized adaptive detection system and the loss of signal-to-noise ratio (SNR) performance is only 1 dB at a BER of 10-9 over a lognormal turbulence channel with normalized standard deviation of irradiance σ=0.25 and phase noise with normalized variance $\sigma;_{\oslash}^{2}$ 2=0.07. Hence, this scheme can contribute to the performance improvement of the FSO system and its practical realization. - 5 May 2009
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 21 (14) , 963-965
Packaging-Induced Strain Measurement Based on the Degree of Polarization in GaAsP–GaInP High-Power Diode Laser Bars
The strain caused by device packaging was studied in high-power semiconductor laser bars by measuring the degree of polarization. Polarization measurement with intentionally GaAsP-GaInP strained laser bar packaged on a Cu heat sink for 799-nm emission revealed the variation of band edges between the conduction band and heavy-hole or light-hole bands in the active region. This served as a method for evaluating the strain. In the packaging process, a maximum of 1800-ppm strain was transmitted to the active region. It was found that the defect density of 14.3% was induced.
- 5 May 2009
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 21 (14) , 963-965
Packaging-Induced Strain Measurement Based on the Degree of Polarization in GaAsP–GaInP High-Power Diode Laser Bars
The strain caused by device packaging was studied in high-power semiconductor laser bars by measuring the degree of polarization. Polarization measurement with intentionally GaAsP-GaInP strained laser bar packaged on a Cu heat sink for 799-nm emission revealed the variation of band edges between the conduction band and heavy-hole or light-hole bands in the active region. This served as a method for evaluating the strain. In the packaging process, a maximum of 1800-ppm strain was transmitted to the active region. It was found that the defect density of 14.3% was induced.