Using the mapping method based on q-deformed hyperbolic functions,the exact solutions of generalizedBreor-Kaup equations are obtained.Based on the solutions,two coherent structures,periodic-branch kink and non-propaga...Using the mapping method based on q-deformed hyperbolic functions,the exact solutions of generalizedBreor-Kaup equations are obtained.Based on the solutions,two coherent structures,periodic-branch kink and non-propagating kink,have been obtained.Moreover,one solitonal interaction form,two line solitons interaction on the kinkbackground,has been found.展开更多
Using mean field method proposed in Ref. [4], the 40 Gb/s multi ― channelWDM optical fiber transmission systems with different dispersion maps are simulated. By this method,the computation time can be greatly reduced...Using mean field method proposed in Ref. [4], the 40 Gb/s multi ― channelWDM optical fiber transmission systems with different dispersion maps are simulated. By this method,the computation time can be greatly reduced since following only the full time evolution of alimited number of channels while treating the other channels as continuous wave. But sincedispersion plays an important role in the process of FWM and XPM, different dispersion maps willaffect the application of the method. The dependence of the method on dispersion maps isinvestigated. The results not only confirm the mean field method, but also give useful approach forsystem design.展开更多
In order to reduce the four-wave mixing crosstalk and avoid the signal waveform distortion in long-haul dense-wavelength division multiplexing systems,helpful methods on how to choose suitable local parameters in high...In order to reduce the four-wave mixing crosstalk and avoid the signal waveform distortion in long-haul dense-wavelength division multiplexing systems,helpful methods on how to choose suitable local parameters in higher-order dispersion managed line are presented, which are used to increase the system capacity and improve the system performances.展开更多
A robust interference canceller for Multi-Carrier Code Division Multiple Access(MC-CDMA) using Orthogonal Frequency Division Multiplexing (OFDM) in Rayleigh fading isproposed. This interference canceller is robust in ...A robust interference canceller for Multi-Carrier Code Division Multiple Access(MC-CDMA) using Orthogonal Frequency Division Multiplexing (OFDM) in Rayleigh fading isproposed. This interference canceller is robust in the sense that it cancels Inter-Carriers Inter-ference (ICI) and is suitable for use in dispersive channels. To come up the effects of the signaldispersion, Doppler shifts and delay spreads on the performance of MC-CDMA systems over mo-bile fading channels, this interference canceller exploits the merit of the orthogonal signaling andpilot signals to evaluate the channel parameters. This interface canceller is well suited to work initerative turbo interference cancellation.展开更多
基金National Natural Science Foundation of China under Grant Nos.10535010 and 10775123the Research Fund of Ministry of Education under Grant No.20070284016
文摘Using the mapping method based on q-deformed hyperbolic functions,the exact solutions of generalizedBreor-Kaup equations are obtained.Based on the solutions,two coherent structures,periodic-branch kink and non-propagating kink,have been obtained.Moreover,one solitonal interaction form,two line solitons interaction on the kinkbackground,has been found.
文摘Using mean field method proposed in Ref. [4], the 40 Gb/s multi ― channelWDM optical fiber transmission systems with different dispersion maps are simulated. By this method,the computation time can be greatly reduced since following only the full time evolution of alimited number of channels while treating the other channels as continuous wave. But sincedispersion plays an important role in the process of FWM and XPM, different dispersion maps willaffect the application of the method. The dependence of the method on dispersion maps isinvestigated. The results not only confirm the mean field method, but also give useful approach forsystem design.
文摘In order to reduce the four-wave mixing crosstalk and avoid the signal waveform distortion in long-haul dense-wavelength division multiplexing systems,helpful methods on how to choose suitable local parameters in higher-order dispersion managed line are presented, which are used to increase the system capacity and improve the system performances.
基金the National Natural Science Foundation of China(No.60172048)
文摘A robust interference canceller for Multi-Carrier Code Division Multiple Access(MC-CDMA) using Orthogonal Frequency Division Multiplexing (OFDM) in Rayleigh fading isproposed. This interference canceller is robust in the sense that it cancels Inter-Carriers Inter-ference (ICI) and is suitable for use in dispersive channels. To come up the effects of the signaldispersion, Doppler shifts and delay spreads on the performance of MC-CDMA systems over mo-bile fading channels, this interference canceller exploits the merit of the orthogonal signaling andpilot signals to evaluate the channel parameters. This interface canceller is well suited to work initerative turbo interference cancellation.
