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The paper presents the design and measurement results of a transient waveform recording ASIC based on the Switched Capacitor Array (SCA) architecture. This 0.18 {\mu}m CMOS prototype device contains two channels and each channel employs a…

Instrumentation and Detectors · Physics 2019-07-09 Jiajun Qin , Lei Zhao , Boyu Cheng , Han Chen , Yuxiang Guo , Shubin Liu , Qi An

It has been technically challenging to efficiently couple external radiofrequency (RF) power to cylindrical dielectric-loaded accelerating (DLA) structures, especially when the DLA structure has a high dielectric constant. This paper…

Accelerator Physics · Physics 2020-08-24 Yelong Wei , Alexej Grudiev , Ben Freemire , Chunguang Jing

Modern multi-access 5G+ networks provide mobile terminals with additional capacity, improving network stability and performance. However, in highly mobile environments such as vehicular networks, supporting multi-access connectivity remains…

Information Theory · Computer Science 2026-03-24 Gregorio Maglione , Veselin Rakocevic , Markus Amend , Touraj Soleymani

Flexible coupler antenna systems have recently received significant research interest due to their capability to intelligently reconfigure wireless channels by controlling coupler positions and/or rotations and dynamically exploiting mutual…

Information Theory · Computer Science 2026-05-21 Xiaodan Shao , Chuangye Shan , Weihua Zhuang , Xuemin Shen

In this contribution, it is proposes to limit the quantization search space of a successive approximation analog-to-digital converter through an analytic derivation of maximum possible sample-to-sample variation. The presented example…

Signal Processing · Electrical Eng. & Systems 2019-05-30 Mehdi Safarpour , Reza Inanlou , Olli Silven , Timo Rahkonen , Omid Shoaei

This paper introduces a cognitive Retrieval-Augmented Generator (RAG) architecture that transcends transformer context-length limitations through phase-coded memory and morphological-semantic resonance. Instead of token embeddings, the…

Neural and Evolutionary Computing · Computer Science 2025-11-18 Denis V. Saklakov

RC4 can be made more secured if an additional RC4-like Post-KSA Random Shuffing (PKRS) process is introduced between KSA and PRGA. It can also be made significantly faster if RC4 bytes are processed in a FPGA embedded system using multiple…

Applications · Statistics 2016-09-21 Rourab Paul , Hemanta Dey , Amlan Chakrabarti , Ranjan Ghosh

This paper introduces RDA, a pioneering approach designed to address two primary deficiencies prevalent in previous endeavors aiming at stealing pre-trained encoders: (1) suboptimal performances attributed to biased optimization objectives,…

Machine Learning · Computer Science 2024-07-11 Shuchi Wu , Chuan Ma , Kang Wei , Xiaogang Xu , Ming Ding , Yuwen Qian , Tao Xiang

Side-channel attacks pose significant challenges to the security of embedded systems, often allowing attackers to circumvent encryption algorithms in minutes compared to the trillions of years required for brute-force attacks. To mitigate…

Cryptography and Security · Computer Science 2023-07-27 Gabriel Klasson Landin , Truls Jilborg

In order to meet the requirement of high data rates for the next generation wireless systems, the efficient implementation of receiver algorithms is essential. On the other hand, the rapid development of technology motivates the…

Hardware Architecture · Computer Science 2015-01-20 Shahriar Shahabuddin , Janne Janhunen , Markku Juntti

Spectral efficiency for asynchronous code division multiple access (CDMA) with random spreading is calculated in the large system limit allowing for arbitrary chip waveforms and frequency-flat fading. Signal to interference and noise ratios…

Information Theory · Computer Science 2010-07-13 Laura Cottatellucci , Ralf R. Mueller , Merouane Debbah

Spiking Neural Networks (SNNs) are increasingly favored for deployment on resource-constrained edge devices due to their energy-efficient and event-driven processing capabilities. However, training SNNs remains challenging because of the…

Hardware Architecture · Computer Science 2025-07-22 Haoxiong Ren , Yangu He , Kwunhang Wong , Rui Bao , Ning Lin , Zhongrui Wang , Dashan Shang

This paper studies uplink multiuser MIMO with a rotatable antenna (RA) array under imperfect channel state information (CSI), where each base-station antenna can adjust its boresight direction within an angular region. To balance…

Signal Processing · Electrical Eng. & Systems 2026-05-07 Ziyuan Zheng , Qingqing Wu , Wen Chen

We report design and subsequent fabrication of an intrinsically gain flattened Erbium doped fiber amplifier (EDFA) based on a highly asymmetrical and concentric dual-core fiber, inner core of which was only partially doped. Phase-resonant…

Probabilistic bits (p-bits) offer an energy-efficient hardware abstraction for stochastic optimization; however, existing p-bit-based simulated annealing accelerators suffer from poor scalability and limited support for fully connected…

Hardware Architecture · Computer Science 2026-02-19 Naoya Onizawa , Taiga Kubuta , Duckgyu Shin , Takahiro Hanyu

In a high-speed coherent optical transmission system, typically the signals obtained at the receiver front-end are digitized using very high-speed ADCs and then processed in the digital domain to remove optical channel impairments. In this…

The joint design of analog beamforming and power allocation is investigated for a single radio-frequency chain multiuser time-division multiple access system under a max-min signal-to-noise ratio (SNR) criterion. A hardware-efficient…

Signal Processing · Electrical Eng. & Systems 2026-04-14 Songnan Gu , Chongjun Ouyang , Hao Jiang , Xingqi Zhang

Wheeler DFAs (WDFAs) are a sub-class of finite-state automata which is playing an important role in the emerging field of compressed data structures: as opposed to general automata, WDFAs can be stored in just $\log\sigma + O(1)$ bits per…

Data Structures and Algorithms · Computer Science 2021-11-05 Jarno Alanko , Nicola Cotumaccio , Nicola Prezza

The problem of uplink transmissions in massive connectivity is commonly dealt with using schemes for grant-free random access. When a large number of devices transmit almost synchronously, the receiver may not be able to resolve the…

Signal Processing · Electrical Eng. & Systems 2024-12-09 Ao Chen , Wei Chen , Bo Ai , Petar Popovski

A novel subcarrier-pair based opportunistic DF protocol is proposed for cooperative downlink OFDMA transmission aided by a decode-and-forward (DF) relay. Specifically, user message bits are transmitted in two consecutive equal-duration time…

Information Theory · Computer Science 2016-11-15 Tao Wang , Yong Fang , Luc Vandendorpe