Adaptive threshold modulation is widely adopted in SDH/SONET network for pointer processing and mapping. When the processing rate is very high, the performance of an all digital implementation is limited by the phase ...Adaptive threshold modulation is widely adopted in SDH/SONET network for pointer processing and mapping. When the processing rate is very high, the performance of an all digital implementation is limited by the phase error resolution. Phase error re-sampling technique is adopted here for the all digital implementation of an improved adaptive threshold modulation, which can work in greatly reduced operating speed with high jitter and wander performance. The improved method is adopted in AU-4 and TU-12 pointer processors and the simulated performance is given.展开更多
In this paper, a novel strategy for numerically evaluating the dark-soliton jitter in optical communications is proposed. It is further tested to be consistent with the famous threshold-value-oriented method for rathe...In this paper, a novel strategy for numerically evaluating the dark-soliton jitter in optical communications is proposed. It is further tested to be consistent with the famous threshold-value-oriented method for rather larger distances. Then our method is used to calculate the dark-soliton jitter within arbitrary small distances. An excellent agreement is obtained with the theoretical predictions based on the nonlinear Schrodinger equation. Our method is also applicable to some more complicated systems such as the dissipative-dispersive system.展开更多
文摘Adaptive threshold modulation is widely adopted in SDH/SONET network for pointer processing and mapping. When the processing rate is very high, the performance of an all digital implementation is limited by the phase error resolution. Phase error re-sampling technique is adopted here for the all digital implementation of an improved adaptive threshold modulation, which can work in greatly reduced operating speed with high jitter and wander performance. The improved method is adopted in AU-4 and TU-12 pointer processors and the simulated performance is given.
文摘In this paper, a novel strategy for numerically evaluating the dark-soliton jitter in optical communications is proposed. It is further tested to be consistent with the famous threshold-value-oriented method for rather larger distances. Then our method is used to calculate the dark-soliton jitter within arbitrary small distances. An excellent agreement is obtained with the theoretical predictions based on the nonlinear Schrodinger equation. Our method is also applicable to some more complicated systems such as the dissipative-dispersive system.
