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This paper presents a new fast switching hybrid frequency synthesizer with wide locking range. The hybrid synthesizer is based on the tanlock loop with no delay block (NDTL) and is capable of integer as well as fractional frequency…

Information Theory · Computer Science 2016-07-26 Ehab Salahat , Saleh R. Al-Araji , Mahmoud Al-Qutayri

We consider the most general case of source clock frequency recovery (SCFR) in packet networks, i.e., asynchronous SCFR through aperiodic packet streams, where there is neither a common reference clock nor any relation between packet…

Networking and Internet Architecture · Computer Science 2013-08-20 Kyeong Soo Kim

This letter proposes a novel hybrid automatic repeat request with chase combining assisted sparse code multiple access (HARQ-CC-SCMA) scheme. Depending on whether the same superimposed packet are retransmitted, synchronous and asynchronous…

Information Theory · Computer Science 2024-04-16 Man Wang , Zheng Shi , Yunfei Li , Xianda Wu , Weiqiang Tan , Xinrong Ye

Nanomechanical resonators can serve as high performance detectors and have potential to be widely used in the industry for a variety of applications. Most nanomechanical sensing applications rely on detecting changes of resonance frequency.…

Instrumentation and Detectors · Physics 2023-09-22 Hajrudin Bešić , Alper Demir , Johannes Steurer , Niklas Luhmann , Silvan Schmid

In this paper, a framework for the combination of robust fractional order CRONE control with non-linear reset is given for both first and second generation CRONE control. General design rules are derived and presented for these CRONE reset…

Systems and Control · Computer Science 2019-10-02 Linda Chen , Niranjan Saikumar , S. Hassan HosseinNia

One of the major challenges of employing a dual-frequency phase-shifting algorithm for phase retrieval is its sensitivity to noise. Yun et. al [H Yun, B Li, S Zhang. 2017] proposed a dual-frequency method based on the Fourier transform…

Instrumentation and Detectors · Physics 2018-05-23 Minmin Wang , Canlin Zhou , Shuchun Si , Zhenkun Lei , Xiaolei Li , Hui Li , YanJie Li

The scope of data-driven fault diagnosis models is greatly extended through deep learning (DL). However, the classical convolution and recurrent structure have their defects in computational efficiency and feature representation, while the…

Artificial Intelligence · Computer Science 2021-12-07 Yifei Ding , Minping Jia , Qiuhua Miao , Yudong Cao

Rapid Single Flux Quantum (RSFQ) logic is a promising technology to supersede Complementary metal-oxide-semiconductor (CMOS) logic in some specialized areas due to providing ultra-fast and energy-efficient circuits. To realize a large-scale…

Hardware Architecture · Computer Science 2022-08-23 Shucheng Yang , Xiaoping Gao , Jie Ren

The phase synchronization of two semiconductor DFB lasers submitted to both frequency-shifted cross-injection and self-feedback is investigated, both numerically and experimentally. A dedicated setup based on monolithic DFB lasers permits…

Optics · Physics 2019-03-27 Aurélien Thorette , Marco Romanelli , Marc Vallet

This work presents a new frequency acquisition method using semi-rotational frequency detection (SRFD) algorithm for a reference-less clock and data recovery (CDR) in a serial-link receiver. The proposed SRFD algorithm classifies the…

Signal Processing · Electrical Eng. & Systems 2019-05-02 Soon-Won Kwon , Hanho Choi , Younho Jeon , Bongjin Kim , WooHyun Kwon , Homin Park , Kyeongha Kwon , Gain Kim , Hyeon-Min Bae

Charge pump phase-locked loop with phase-frequency detector (CP-PLL) is an electrical circuit, widely used in digital systems for frequency synthesis and synchronization of the clock signals. In this paper a non-linear second-order model of…

Signal Processing · Electrical Eng. & Systems 2019-03-12 Nikolay Kuznetsov , Marat Yuldashev , Renat Yuldashev , Mikhail Blagov , Elena Kudryashova , Olga Kuznetsova , Timur Mokaev

This paper presents a novel strategy for the synchronization of grid-following Voltage Source Converters (VSCs) in power systems with low rotational inertia. The proposed synchronization unit is based on emulating the physical properties of…

Systems and Control · Electrical Eng. & Systems 2022-06-30 Ognjen Stanojev , Uros Markovic , Petros Aristidou , Gabriela Hug

In order to improve the stability of synchrotron radiation, we developed a new method of machine learning-based closed orbit feedback and piloted it in the storage ring of the Shanghai Synchrotron Radiation Facility (SSRF). In our…

Accelerator Physics · Physics 2022-12-05 Ruichun Li , Qinglei Zhang , Bocheng Jiang , Zhentang Zhao , Changliang Li , Kun Wang , Dazhang Huang

Phase-locked loops (PLLs) are now widely used in communication systems and have been a classic system for more than 60 years. Well-known mathematical models of such systems are constructed in a number of approximations, so questions about…

Systems and Control · Electrical Eng. & Systems 2021-02-22 Mikhail A. Mishchenko , Denis I. Bolshakov , Alexander S. Vasin , Valery V. Matrosov , Ilya V. Sysoev

Synchronous federated learning (FL) scales poorly with the number of clients due to the straggler effect. Algorithms like FedAsync and GeneralizedFedAsync address this limitation by enabling asynchronous communication between clients and…

Machine Learning · Computer Science 2025-10-23 Abdelkrim Alahyane , Céline Comte , Matthieu Jonckheere , Éric Moulines

Federated learning is a recent development in the machine learning area that allows a system of devices to train on one or more tasks without sharing their data to a single location or device. However, this framework still requires a…

Machine Learning · Computer Science 2024-01-11 Guangyao Zheng , Michael A. Jacobs , Vladimir Braverman , Vishwa S. Parekh

Matched filters are widely used to localise signal patterns due to their high efficiency and interpretability. However, their effectiveness deteriorates for low signal-to-noise ratio (SNR) signals, such as those recorded on edge devices,…

Signal Processing · Electrical Eng. & Systems 2025-09-01 Haozhe Tian , Qiyu Rao , Nina Moutonnet , Pietro Ferraro , Danilo Mandic

We study the synchronization of the auto-oscillation signal generated by the spin transfer driven dynamics of two coupled vortices in a spin-valve nanopillar to an external source. Phase-locking to the microwave field hrf occurs in a range…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 A. Hamadeh , Nicolas Locatelli , V. V. Naletov , Romain Lebrun , Grégoire De Loubens , Julie Grollier , Olivier Klein , V. Cros

Transformer-based Spiking Neural Networks (SNNs) suffer from a great performance gap compared to floating-point \mbox{Artificial} Neural Networks (ANNs) due to the binary nature of spike trains. Recent efforts have introduced deep-level…

Neural and Evolutionary Computing · Computer Science 2025-08-12 Zeqi Zheng , Zizheng Zhu , Yingchao Yu , Yanchen Huang , Changze Lv , Junfeng Tang , Zhaofei Yu , Yaochu Jin

In this letter, we study the performance of hybrid radio-frequency (RF) and free-space optical (FSO) links using automatic repeat request (ARQ). We derive closed-form expressions for the message decoding probabilities, throughput, and…

Information Theory · Computer Science 2016-03-29 Behrooz Makki , Tommy Svensson , Thomas Eriksson , Mohamed-Slim Alouini