the modulation response, relative intensity noise and frequency noise characteristics of qd lasers are investigated theoretically, in presence of an additional optical pumping. it is revealed that the modulation response of qd laser enhances under additional optical beam. by small signal analysis of the carriers' and photons' rates, it is proposed that by injecting excess carriers to ...

A new class of measurement operators, coined hierarchical and prove results guaranteeing the efficient, stable robust recovery hierarchically structured signals from such measurements. We derive bounds on their restricted isometry properties based constants constituent matrices, generalizing extending prior work Kronecker-product As an exemplary application, we apply theory to two communication...

There is growing evidence from psychophysical and neurophysiological studies that the brain utilizes Bayesian principles for inference and decision making. An important open question is how Bayesian inference for arbitrary graphical models can be implemented in networks of spiking neurons. In this paper, we show that recurrent networks of noisy integrate-and-fire neurons can perform approximate...

Doubly-fed induction generators (DFIG) constitute some of the larger units met in distributed generation (DG) with significant power control capabilities. These capabilities clearly become more important in modern grids where the aggregation of the individual DG units into larger structures, known as virtual power plant (VPP) concept, is utilized. A special role of DFIGs in the VPP frame is to ...

This paper addresses an aspect of sign language (SL) recognition that has largely been overlooked in previous work and yet is integral to signed communication. This work is the most comprehensive to-date on the recognition of the complex variations in sign appearances due to grammatical processes (inflections). These processes systematically modulate both the temporal and spatial dimensions of ...

In this paper we propose the application of H! control within optical networks. Specifically, we aim to suppress the cross-gain modulation effects within Erbium-doped fiber amplifiers owed to pilot tone disturbances used for optical monitoring. Based on the characteristics of these pilot tone disturbances, we design an H! controller to improve transient performance of optical channels within th...

Diffusionless phase transitions are at the core of the multifunctionality of (magnetic) shape memory alloys, ferroelectrics and multiferroics. Giant strain effects under external fields are obtained in low symmetric modulated martensitic phases. We outline the origin of modulated phases, their connection with tetragonal martensite and consequences for their functional properties by analysing th...

This paper describes the design and implementation of a single-bit FIR Filter with balanced ternary coefficients (i.e. -1/0/+1) aimed at general DSP applications. The fixed filter coefficients were computed using a sigma delta modulation technique. The filter is based on a hierarchical adder structure that can be pipelined for high performance that has been designed and simulated in VHDL. The f...