We demonstrate efficient, error-free 3.125Gb/s modulation of InP-based 1.3μm VCSELs with AsSb-based DBRs up to 60°C. These devices demonstrated high differential efficiencies (>60% at room-temperature), which resulted in a required bias current for modulation of only 5.9mA. The measured extinction ratios were greater than 8dB up to 60°C with a peak-to-peak drive voltage of only 800mV. The 3dB-d...

Low-rate Denial of Service (LDoS) attacks exploit the deficiencies of the minimum RTO of TCP to send out attack packets in short-duration periodic pulses with low average volume traffic in order to throttle TCP throughput. It is hard to detect an LDoS attack by most available detection schemes, which are triggered by high-rate traffic based on time average statistics. In this paper, the method ...

In general, reactive power compensation for power factor and stability of the supply system can be improved. The STATCOM (STATic synchronous Compensator) is being increasingly popular in power system applications. A small signal model of the STATCOM has been proposed without controlling DC link voltage. This scheme controls the phase angle as well as modulation index of the switching pattern. W...

Computation and universality have been defined in the 1930’s. In the last five or so decades, it has been unveiled how common they are. The question about the frontier moved from proving the universality of dynamical systems to the complexity of universal machines. This is not only an intellectual challenge, but also important to find niches escaping tons of non decidability results or otherwis...

A full-order dynamic model of the pulse-width modulation (PWM) DC-to-DC SEPIC converter in discontinuous conduction mode (DCM) is presented in this paper. The derivation procedure is based on the smallsignal PWM switch model in DCM used in conjunction with a PWM derived SEPIC topology. The small-signal characteristics of the PWM SEPIC converter in DCM obtained in a similar way as the small-sign...

in this study, we focused on the gait of parkinson’s disease (pd) and presented a gray box model for it. we tried to present a model for basal ganglia structure in order to generate stride time interval signal in model output for healthy and pd states. because of feedback role of dopamine neurotransmitter in basal ganglia, this part is modelled by “elman network”, which is a neural network stru...

In this paper an estimator for speech enhancement based on Laplacian Mixture Model has been proposed. The proposed method, estimates the complex DFT coefficients of clean speech from noisy speech using the MMSE  estimator, when the clean speech DFT coefficients are supposed mixture of Laplacians and the DFT coefficients of  noise are assumed zero-mean Gaussian distribution. Furthermore, the MMS...