A new primary standard for AC voltage based on pulse driven Josephson junction arrays is under development. In this paper, preliminary spectral measurements and simulations are presented on a fast switching multiplexer unit built for the high precision synthesis of arbitrary waves. First order delta-sigma modulation is used to represent the wave to be synthesized. The first results are promisin...

— We investigate bit-interleaved coded modulation with iterative decoding (BICM-ID) for bandwidth efficient transmission , where the bit error rate is reduced through iterations between a multilevel demapper and a simple channel decoder. In order to achieve a significant turbo-gain, the assignment strategy of the binary indices to signal points is crucial. We address the problem of finding the ...

in this paper, the results of design and implementation of the subsystems for generating loran pulse are proposed based on method of carrier’s pulse width change. in order to generate the desired pulse, firstly a pwm signal generated and then it is applied to a class-d switching amplifier. the results show that by generating appropriate pulses in digital fpga subsystem for application in switch...

Light beams can carry orbital angular momentum (OAM) such that a helical phase front twists along the direction of propagation. OAM beams have been demonstrated in a wide variety of applications and have been found to offer a new orthogonal degree of freedom for multiplexing independent data streams for high-capacity point-to-point optical communications. However, to enable their efficient use ...

This paper addresses the problem of coexistence synchronization and anti-synchronization (CSAS) for a class switched chaotic systems by adaptive control method, where system is realized unified under arbitrary switching signal. Firstly, necessary sufficient conditions CSAS are proposed from two perspectives, one analyzing parity expression, other decomposing system. Secondly, according to obtai...

We propose a redesign strategy to avoid an arbitrary value of the input signal. With hybrid architecture based on switching logic with two modes we obtain robust global asymptotic stability and ensure that never takes unwanted value, while preserving nominal closed-loop behaviour in neighbourhood origin. In case where minimization problem is too computationally expensive, provide simpler, albei...

In many applications, and in systems/synthetic biology in particular, it is desirable to compute control policies that force the trajectory of a bistable system from one equilibrium (the initial point) to another equilibrium (the target point), or in other words to solve the switching problem. It was recently shown that, for monotone bistable systems, this problem admits easyto-implement open-l...