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We discuss the nonlinear performance of space-division multiplexed systems under realistic conditions using a comprehensive numerical model. Newly derived Manakov equations allow us to include birefringence effects for both multimode and multicore fibers.
We discuss the modeling of nonlinear propagation in multi-mode optical fibers. We show that nonlinear propagation in the presence of random mode coupling is described by coupled multi-component Manakov equations. The system implications of these equations on communications performance and information capacity are discussed.
We derive a generalized Manakov equation for multimode fiber to study the rapidly varying birefringence effects in space-division multiplexed fiber systems and show through numerical simulations that birefringence can reduce the impact of nonlinearities.
A new torque control strategy on the direct control of stator flux linkage based on PWM is introduced due to the disadvantage of synchronous motor current vector control and traditional torque control. Flux linkage and torque control are achieved through controlling the trajectory of stator flux linkage vector, thus permanent switching frequency and small flux linkage pulse are obtained. The necessary...
The paper presents a detailed study on the idle leakage reduction techniques on partially depleted silicon-on-insulator (PD-SOI) CMOS SRAM. The most promising leakage reduction techniques that have been proposed are introduced, analyzed and compared into 65 nm low-power PD-SOI technology, taking into account all the SOI specific effect. Especially, it is shown that the leakage reduction techniques...
Current mode (CM) scheme provides suitable alternative for the high speed on-chip interconnect signaling. This paper presents a energy-delay optimization methodology for the current-mode (CM) signaling scheme. Optimization for the CM circuits for on-chip interconnects requires a joint optimization of driver and receiver device sizes, as their parameters which affect the energy-delay performance depend...
It is well known, actual trend in power electronics about exchange power thyristors with devices more flexible from point of view of commutation and possibility of command (IGBT, MOS transistors, GTO). There are applications, for example, DC high voltage electrical energy transmission, where because of high power switched, power thyristors remain an efficient solution. In this paper, is presented...
Electroencephalography (EEG) is widely used in clinical settings to investigate neurophysiology. Since EEG signals contain a wealth of information about brain functions, there are many approaches in analyzing EEG signals with spectral techniques. We have used short time Fourier transform (STFT) at 19 channels of EEG for 10 Autism disorders (6-11 years old) and 7 age matched control subjects. The values...
An efficient numerical method is proposed to solve multimode-coupled equations with two points boundary conditions. This method is very applicable for simulation of any types of fiber Bragg gratings modulated by long period gratings.
More and more users subscribing to wireless broadband services are seeking to have access to both WLAN and UMTS networks. We study individually optimal user-network association in an integrated WLAN and UMTS hybrid cell. The association problem is formulated within a non-cooperative game framework. In the formulation, mobile arrivals are assumed to follow the Poisson process and each mobile considers...
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