The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform

Yi Dong - One of the best experts on this subject based on the ideXlab platform.

  • Effect of phase noise on optical Minimum-Shift Keying transmission systems
    Optics Communications, 2009
    Co-Authors: Han Chen, Yi Dong
    Abstract:

    Abstract Phase-modulated (PM) signals have recently been used in long-haul lightwave communication systems to reach record distances. Added directly to the signal phase, linear and nonlinear phase noise cause performance degradation in PM systems. Minimum-Shift Keying (MSK), as a special format of PM signals, presents some different features of phase noise tolerance. This paper investigates the effect of phase noise on the performance degradation in the 10 Gb/s optical MSK systems and analyzes the contribution of phase noise to the bit error rate (BER), compared with the conventional PM format, 50% duty cycle optical return-to-zero differential phase-Shift Keying (RZ-DPSK) signals, in several typical local fiber dispersion transmission systems. The effect of intensity noise on the performance degradation in the corresponding transmission systems is also investigated.

  • Tolerance of laser frequency offset in optical Minimum-Shift Keying transmission systems
    Optics Communications, 2009
    Co-Authors: Han Chen, Yi Dong
    Abstract:

    A mismatch between laser frequency and delay interferometer (DI) phase is found to be the most critical impairment for the receiver performance in a practical phase-modulated (PM) system. This paper investigates the receiver performance degradation caused by frequency offset between optical signal and DI in a 10 Gb/s Minimum-Shift Keying (MSK) system, and compares it with the conventional PM formats, optical differential-phase-Shift Keying (DPSK) and differential-quadrature-phase-Shift Keying (DQPSK), which are nonreturn-to-zero (NRZ) and 50% duty cycle return-to-zero (RZ). Results show that the MSK system is about double times and six times more robust to frequency offset than the DPSK and DQPSK systems operating at the same bit rate, respectively.

  • Effect of Laser Frequency Offset on Optical Minimum-Shift Keying Transmission System
    Optical Transmission Switching and Subsystems VI, 2008
    Co-Authors: Han Chen, Yi Dong
    Abstract:

    As a special case of continuous phase frequency-Shift-Keying (FSK), Minimum-Shift Keying (MSK) exhibits some different properties compared with the traditional optical phase modulation formats, such as return-to-zero (RZ) differential-phase-Shift-Keying (DPSK) and differential-quadrature-phase-Shift-Keying (DQPSK). In this paper, we investigated the receiver performance degradation caused by laser frequency offset between laser frequency and delay interferometer (DI) phase, which is found to be the most critical impairment for the receiver performance in a practical optical phase modulated system. Results show that MSK system is about double times and six times more robust to frequency offsets than RZ-DPSK and RZ-DQPSK systems operating at the same 10Gb/s bit rate, respectively.

  • The study of optical Minimum-Shift Keying performance in 40Gbit/s WDM transmission system
    Optical Transmission Switching and Subsystems V, 2007
    Co-Authors: Han Chen, Yi Dong
    Abstract:

    In this article optical Minimum-Shift Keying (MSK) modulation format in 9×40 Gbit/s wavelength-division multiplexing (WDM) spacing of 100 GHz transmission systems is investigated and compared with return-to-zero differential phase-Shift Keying (RZ-DPSK) and return-to-zero (RZ). The performance of optical MSK in presence of amplification noise, chromatic dispersion and nonlinear effects is analytically determined. Operations over a wide range of parameters, such as span input power, precompensation value, and chromatic dispersion parameter are performed; experimental results show that optical MSK demonstrates special performance in transmission distance, nonlinear effects, and dispersion tolerance.

  • the study of optical Minimum Shift Keying performance in 40gbit s wdm transmission system
    Proceedings of SPIE, 2007
    Co-Authors: Han Chen, Yi Dong
    Abstract:

    In this article optical Minimum-Shift Keying (MSK) modulation format in 9×40 Gbit/s wavelength-division multiplexing (WDM) spacing of 100 GHz transmission systems is investigated and compared with return-to-zero differential phase-Shift Keying (RZ-DPSK) and return-to-zero (RZ). The performance of optical MSK in presence of amplification noise, chromatic dispersion and nonlinear effects is analytically determined. Operations over a wide range of parameters, such as span input power, precompensation value, and chromatic dispersion parameter are performed; experimental results show that optical MSK demonstrates special performance in transmission distance, nonlinear effects, and dispersion tolerance.

M L B Riediger - One of the best experts on this subject based on the ideXlab platform.

  • two stage blind detection of alamouti based Minimum Shift Keying
    International Conference on Communications, 2006
    Co-Authors: M L B Riediger
    Abstract:

    In a recent study [7], the authors successfully incorporated Minimum-Shift Keying (MSK) into an Alamouti-type space-time (ST) transmission system, operating in a fading channel environment. This work extends the investigation to include an enhanced receiver and a more realistic channel model that does not limit the fading to be constant over each ST block. The proposed receiver first detects an underlying differential ST ? / 2 -Shifted BPSK code present in the ST-MSK signal, by performing low-complexity non-coherent multiple-symbol differential detection with decision feedback. The relatively reliable initial data estimates are then used to obtain high-quality channel estimates, at a rate notably higher than the MSK symbol rate. The availability of these channel estimates enables a second-stage coherent sequence detector to significantly refine the initial data decisions. In fast fading, results show that the proposed receiver performance is within 2 dB of the coherent detection lower bound, at a bit-error-rate of 10-5. When compared to a linearly modulated ST ? / 2 -Shifted BPSK code, the proposed ST-MSK scheme achieves a greater order of diversity and hence better performance in a fast fading environment. We attribute this to the additional time-diversity effect associated with the phase coding evident in MSK.

  • ICC - Two-Stage Blind Detection of Alamouti Based Minimum-Shift Keying
    2006 IEEE International Conference on Communications, 2006
    Co-Authors: M L B Riediger
    Abstract:

    In a recent study [7], the authors successfully incorporated Minimum-Shift Keying (MSK) into an Alamouti-type space-time (ST) transmission system, operating in a fading channel environment. This work extends the investigation to include an enhanced receiver and a more realistic channel model that does not limit the fading to be constant over each ST block. The proposed receiver first detects an underlying differential ST ? / 2 -Shifted BPSK code present in the ST-MSK signal, by performing low-complexity non-coherent multiple-symbol differential detection with decision feedback. The relatively reliable initial data estimates are then used to obtain high-quality channel estimates, at a rate notably higher than the MSK symbol rate. The availability of these channel estimates enables a second-stage coherent sequence detector to significantly refine the initial data decisions. In fast fading, results show that the proposed receiver performance is within 2 dB of the coherent detection lower bound, at a bit-error-rate of 10-5. When compared to a linearly modulated ST ? / 2 -Shifted BPSK code, the proposed ST-MSK scheme achieves a greater order of diversity and hence better performance in a fast fading environment. We attribute this to the additional time-diversity effect associated with the phase coding evident in MSK.

Yixin Wang - One of the best experts on this subject based on the ideXlab platform.

  • Externally Modulated Optical Minimum Shift Keying Format
    Journal of Lightwave Technology, 2007
    Co-Authors: Yang Jing Wen, Yixin Wang, Wen-de Zhong
    Abstract:

    This paper presents the generation and the performance evaluation of optical Minimum Shift Keying (MSK) for high-speed and high-spectral-efficiency wavelength-division multiplexing systems. The detailed principle on optical MSK generation and detection is derived and analyzed. Optical MSK data (10.7 Gb/s) are successfully generated by an experiment using the proposed scheme. The results show that the optical MSK signal exhibits a very compact optical spectrum. The performance of the optical MSK modulated system is evaluated and compared with those of 50% duty-cycle return-to-zero differential phase Shift Keying (RZ-DPSK) and 50% duty-cycle return-to-zero on-off Keying (RZ-OOK) modulated systems, via both simulation and experiment, in terms of dispersion tolerance, linear crosstalk, self-phase modulation (SPM) tolerance, stimulated Brillouin scattering (SBS) threshold, optimal receiver filter bandwidth, and optimal link launch power into single-mode fibers and dispersion compensation fibers. Experimental and simulation results show that the MSK signal exhibits the largest tolerance against fiber dispersion and SPM effect as compared with RZ-DPSK and RZ-OOK. Experimental results also confirm the negative penalty against the SPM effect. The SBS threshold of both the MSK and RZ-DPSK systems is more than 10 dB higher than that of the RZ-OOK system. The MSK that is generated with conventional carrier-suppressed return-to-zero (CSRZ) pulses exhibits a narrower optimal optical filter bandwidth but a wider electrical filter bandwidth compared with those of RZ-OOK and RZ-DPSK. The MSK signal that is generated with pure dual-mode pulses has a similar optimum range to RZ-OOK and RZ-DPSK at a high optical signal-to-noise ratio (OSNR) but has a narrower optimal optical filter bandwidth at a low OSNR. The optimum fiber launch power study shows that the MSK signal that is generated using the conventional CSRZ pulses exhibits higher optimum launch power, which agrees with the SPM tolerance study.

  • Generation, detection and characterization of optical Minimum Shift Keying data format
    Optics Communications, 2007
    Co-Authors: Yang Jing Wen, Yi Dong, Yixin Wang
    Abstract:

    Abstract This paper presents the detailed principle on the generation and detection of optical Minimum Shift Keying (MSK) format for high-speed and high spectral efficiency WDM systems. 10.7 Gb/s optical MSK data is successfully generated by experiment using the proposed scheme. The results show that optical MSK signal exhibits very compact optical spectrum, which is promising for high spectral efficiency WDM applications. Simulation results on dispersion and nonlinear tolerance comparison confirm that MSK signal has better dispersion tolerance and nonlinear tolerance compared with 50% duty cycle return-to-zero differential phase Shift Keying (RZ-DPSK) and 50% duty cycle RZ on-off-Keying (RZ-OOK) formats.

  • optical Minimum Shift Keying property and implementation
    Quantum Electronics and Laser Science Conference, 2006
    Co-Authors: Chao Lu, Yi Dong, Jinyu Mo, Yixin Wang
    Abstract:

    Techniques for generation and detection of optical Minimum-Shift Keying signals are presented. The property of optical MSK and expected performance in high speed optical transmission system are discussed.

  • Optical Minimum-Shift Keying format and its dispersion tolerance
    2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference, 2006
    Co-Authors: Yang Jing Wen, Yi Dong, Yixin Wang
    Abstract:

    Detailed principle for optical MSK generation and detection is presented. 10.7 Gb/s MSK data is transmitted and its dispersion tolerance is compared with that of RZ-DPSK and RZ-OOK. Results show that MSK exhibits better tolerance than other two formats.

Yi Wang - One of the best experts on this subject based on the ideXlab platform.

  • Research on the system performance of Gaussian Minimum-Shift Keying with M-distribution in satellite-to-ground laser communication
    Optics Communications, 2020
    Co-Authors: Yi Wang, Yaping Wang
    Abstract:

    Abstract In this paper, a Gaussian Minimum Shift Keying (GMSK) modulation based on M-distribution is proposed for uplink satellite-to-ground laser communication systems. Considering the noise caused jointly by intensity scintillation, beam wander and angle of arrival (AOA) fluctuations in the satellite-to-ground laser uplink communication, the closed-form expression of bit error rate (BER) of GMSK modulation system is derived. The system performance under weak, medium and strong turbulence is studied. The relationship between signal-to-noise ratio and BER is analyzed using simulations, and compared with the differential phase Shift Keying modulation currently used in the satellite-to-ground laser communication systems. Furthermore, the effects of zenith angle, receiver aperture, transmitter beam radius and divergence angle on the system performance are studied. This research work provides guidance for system performance analysis of uplink satellite-to-ground laser communication.

  • Research on the system performance evaluation of Minimum-Shift Keying in uplink ground-to-satellite with gamma–gamma distribution
    Optical Engineering, 2017
    Co-Authors: Yi Wang, Ao Zhang
    Abstract:

    Minimum-Shift Keying (MSK) has the advantages of constant envelope, continuous phase, and high spectral efficiency, and it is applied in radio communication and optical fiber communication. MSK modulation of coherent detection is proposed in the ground-to-satellite laser communication system; in addition, considering the inherent noise of uplink, such as intensity scintillation and beam wander, the communication performance of the MSK modulation system with coherent detection is studied in the uplink ground-to-satellite laser. Based on the gamma–gamma channel model, the closed form of bit error rate (BER) of MSK modulation with coherent detection is derived. In weak, medium, and strong turbulence, the BER performance of the MSK modulation system is simulated and analyzed. To meet the requirements of the ground-to-satellite coherent MSK system to optimize the parameters and configuration of the transmitter and receiver, the influence of the beam divergence angle, the zenith angle, the transmitter beam radius, and the receiver diameter are studied.

  • research on the system performance evaluation of Minimum Shift Keying in uplink ground to satellite with gamma gamma distribution
    Optical Engineering, 2017
    Co-Authors: Yi Wang, Ao Zhang
    Abstract:

    Minimum-Shift Keying (MSK) has the advantages of constant envelope, continuous phase, and high spectral efficiency, and it is applied in radio communication and optical fiber communication. MSK modulation of coherent detection is proposed in the ground-to-satellite laser communication system; in addition, considering the inherent noise of uplink, such as intensity scintillation and beam wander, the communication performance of the MSK modulation system with coherent detection is studied in the uplink ground-to-satellite laser. Based on the gamma–gamma channel model, the closed form of bit error rate (BER) of MSK modulation with coherent detection is derived. In weak, medium, and strong turbulence, the BER performance of the MSK modulation system is simulated and analyzed. To meet the requirements of the ground-to-satellite coherent MSK system to optimize the parameters and configuration of the transmitter and receiver, the influence of the beam divergence angle, the zenith angle, the transmitter beam radius, and the receiver diameter are studied.

Ao Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Research on the system performance evaluation of Minimum-Shift Keying in uplink ground-to-satellite with gamma–gamma distribution
    Optical Engineering, 2017
    Co-Authors: Yi Wang, Ao Zhang
    Abstract:

    Minimum-Shift Keying (MSK) has the advantages of constant envelope, continuous phase, and high spectral efficiency, and it is applied in radio communication and optical fiber communication. MSK modulation of coherent detection is proposed in the ground-to-satellite laser communication system; in addition, considering the inherent noise of uplink, such as intensity scintillation and beam wander, the communication performance of the MSK modulation system with coherent detection is studied in the uplink ground-to-satellite laser. Based on the gamma–gamma channel model, the closed form of bit error rate (BER) of MSK modulation with coherent detection is derived. In weak, medium, and strong turbulence, the BER performance of the MSK modulation system is simulated and analyzed. To meet the requirements of the ground-to-satellite coherent MSK system to optimize the parameters and configuration of the transmitter and receiver, the influence of the beam divergence angle, the zenith angle, the transmitter beam radius, and the receiver diameter are studied.

  • research on the system performance evaluation of Minimum Shift Keying in uplink ground to satellite with gamma gamma distribution
    Optical Engineering, 2017
    Co-Authors: Yi Wang, Ao Zhang
    Abstract:

    Minimum-Shift Keying (MSK) has the advantages of constant envelope, continuous phase, and high spectral efficiency, and it is applied in radio communication and optical fiber communication. MSK modulation of coherent detection is proposed in the ground-to-satellite laser communication system; in addition, considering the inherent noise of uplink, such as intensity scintillation and beam wander, the communication performance of the MSK modulation system with coherent detection is studied in the uplink ground-to-satellite laser. Based on the gamma–gamma channel model, the closed form of bit error rate (BER) of MSK modulation with coherent detection is derived. In weak, medium, and strong turbulence, the BER performance of the MSK modulation system is simulated and analyzed. To meet the requirements of the ground-to-satellite coherent MSK system to optimize the parameters and configuration of the transmitter and receiver, the influence of the beam divergence angle, the zenith angle, the transmitter beam radius, and the receiver diameter are studied.