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We present three classes of symmetric broadband composite pulse sequences. The composite phases are given by analytic formulas (rational fractions of $\pi$) valid for any number of constituent pulses. The transition probability is expressed…

Quantum Physics · Physics 2018-04-18 Boyan T. Torosov , Nikolay V. Vitanov

A novel technique for divided-pulse amplification is presented in a proof-of-principle experiment. A pulse burst, cut out of the pulse train of a mode-locked oscillator, is amplified and temporally combined into a single pulse. High…

Integrated sensing and communications (ISAC) is regarded as a key technology in next-generation (6G) mobile communication systems. Affine frequency division multiplexing (AFDM) is a recently proposed waveform that achieves optimal diversity…

Information Theory · Computer Science 2024-02-27 Ali Bemani , Nassar Ksairi , Marios Kountouris

We present an apparatus that converts every pulse of a pulsed light source to a pulse train in which the intensities of the different pulses are samples of the spatial or temporal frequency spectrum of the original pulse. In this way, the…

The use of cortical field potentials rather than the details of spike trains as the basis for cognitive information processing is proposed. This results in a space of cognitive elements with natural metrics. Sets of spike trains may also be…

Disordered Systems and Neural Networks · Physics 2016-08-31 Henry C. Tuckwell

This paper proposes an integrated sensing and communications (ISAC) system based on affine frequency division multiplexing (AFDM) waveform. To this end, a metric set is designed according to not only the maximum tolerable delay/Doppler, but…

Signal Processing · Electrical Eng. & Systems 2025-02-03 Yuanhan Ni , Peng Yuan , Qin Huang , Fan Liu , Zulin Wang

Phase response curve (PRC) is an extremely useful tool for studying the response of oscillatory systems, e.g. neurons, to sparse or weak stimulation. Here we develop a framework for studying the response to a series of pulses which are…

Data Analysis, Statistics and Probability · Physics 2017-09-13 Vladimir Klinshov , Serhiy Yanchuk , Artur Stephan , Vladimir Nekorkin

We report on the experimental generation of spatially multiplexed picosecond 40-GHz pulse trains at telecommunication wavelengths by simultaneous intra-modal multiple four wave mixing and intermodal cross-phase modulation in km-long…

Optics · Physics 2020-04-06 H. Zhang , M. Bigot-Astruc , P. Sillard , Julien Fatome

Performing computational tasks with wave-based devices is becoming a groundbreaking paradigm that can open new opportunities for the next generation of efficient analogue and digital computing systems. Decision-making processes for…

Applied Physics · Physics 2023-10-16 Ross Glyn MacDonald , Alex Yakovlev , Victor Pacheco-Peña

In time hopping impulse radio, $N_f$ pulses of duration $T_c$ are transmitted for each information symbol. This gives rise to two types of processing gain: (i) pulse combining gain, which is a factor $N_f$, and (ii) pulse spreading gain,…

Information Theory · Computer Science 2007-07-13 Sinan Gezici , Andreas F. Molisch , H. Vincent Poor , Hisashi Kobayashi

Natively, atomic and molecular processes develop in a sub-femtosecond time scale. In order to, for instance, track and capture the electron motion in that scale we need suitable `probes'. Attosecond pulses configure the most appropriate…

Hyperbolic and quasi-flat isofrequency contours (IFCs) are used for beam canalization and can be created by tilted Dirac points in photonic systems. Dirac points in microcavities are generated by the combination of…

Mesoscale and Nanoscale Physics · Physics 2026-05-06 Olha Bahrova , Jiahao Ren , Feng Jin , Rui Su , Guillaume Malpuech , Dmitry Solnyshkov

This paper investigates the sensing potential of affine frequency division multiplexing (AFDM) in high-mobility integrated sensing and communication (ISAC) from the perspective of radar waveforms. We introduce an innovative parameter…

Signal Processing · Electrical Eng. & Systems 2026-04-14 Jiajun Zhu , Yanqun Tang , Cong Yi , Haoran Yin , Yuanhan Ni , Fan Liu , Zhiqiang Wei , Huseyin Arslan

We study non-locally coupled noisy integrate-and-fire neurons with the Fokker-Planck equation. A propagating pulse state and a wavy state appear as a phase transition from an asynchronous state. We also find a solution in which traveling…

Adaptation and Self-Organizing Systems · Physics 2009-11-10 H. Sakaguchi

In this paper, an incremental selective decode-and-forward (ISDF) relay strategy is proposed for power line communication (PLC) systems to improve the spectral efficiency. Traditional decode-and-forward (DF) relaying employs two time slots…

Signal Processing · Electrical Eng. & Systems 2018-03-05 A. Dubey , C. Kundu , T. M. N. Ngatched , O. A. Dobre , R. K. Mallik

The resonant filtering method transforming frequency modulated radiation field into a train of short pulses is proposed to apply in optical domain. Effective frequency modulation can be achieved by electro-optic modulator or by resonant…

Quantum Physics · Physics 2017-03-15 R. N. Shakhmuratov

One possibility to break down the capacity limit in optical transmission systems are higher spectral efficiencies, enabled by Faster-than-Nyquist signaling. Here we present the utilization of non-orthogonal time division multiplexing of…

Signal Processing · Electrical Eng. & Systems 2018-07-17 Ali Dorostkar , Thomas Schneider

We theoretically propose and numerically validate an all-optical scheme to generate optical pulse trains with varying peak-powers and durations. A shaping of the spectral phase thanks to discrete $\pi/2$ phase shifts enables an efficient…

Optics · Physics 2021-03-29 Ugo Andral , Christophe Finot

Iterative learning control (ILC) is capable of improving the tracking performance of repetitive control systems by utilizing data from past iterations. The aim of this paper is to achieve both task flexibility, which is often achieved by…

Systems and Control · Electrical Eng. & Systems 2024-03-05 Max van Haren , Kentaro Tsurumoto , Masahiro Mae , Lennart Blanken , Wataru Ohnishi , Tom Oomen

The paper aims at demonstrating communication capabilities of IPT. For this data communication is performed between two modules using the concept of IPT. IPT was deemed to be the best solution to the system houses a multi parameter…

Other Computer Science · Computer Science 2013-09-04 K. P. Shaji , I. Alsheba , Y. A. Syed Khadar , S. Kannan