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The conventional direction-of-arrival (DoA) estimation approaches only be effective when the line-of-sight (LoS) link exists, while in the case of the non-line-of-sight (NLoS) situation, the spatial angle can not be captured and thus the…

信号处理 · 电气工程与系统科学 2023-11-09 Jiawen Yuan , Shaodan Ma , Gong Zhang , Henry Leung

Realizing quantum speedup for practically relevant, computationally hard problems is a central challenge in quantum information science. Using Rydberg atom arrays with up to 289 qubits in two spatial dimensions, we experimentally…

Along with the development of quantum technology, finding useful applications of quantum computers has been a central pursuit. Despite various quantum algorithms have been developed, many of them often require strong input assumptions,…

量子物理 · 物理学 2026-02-25 Nhat A. Nghiem

This paper consider solving a class of nonconvex-strongly-convex distributed stochastic bilevel optimization (DSBO) problems with personalized inner-level objectives. Most existing algorithms require computational loops for hypergradient…

最优化与控制 · 数学 2025-04-08 Youcheng Niu , Jinming Xu , Ying Sun , Yan Huang , Li Chai

Attaining a quantum speedup in solving practically useful optimization problems has been one of the holy grails in the field of quantum computing. While prior approaches have demonstrated speedups for certain structured problem classes,…

量子物理 · 物理学 2026-05-04 Jan Ljubas , Tim Byrnes

Non-coherent over-the-air (NCOTA) computation enables low-latency and bandwidth-efficient decentralized optimization by exploiting the average energy superposition property of wireless channels. It has recently been proposed as a powerful…

信号处理 · 电气工程与系统科学 2026-02-16 Nicolò Michelusi

Minimax optimization plays an important role in many machine learning tasks such as generative adversarial networks (GANs) and adversarial training. Although recently a wide variety of optimization methods have been proposed to solve the…

最优化与控制 · 数学 2023-04-24 Feihu Huang , Songcan Chen

Finding a maximal independent set (MIS) in a graph is a cornerstone task in distributed computing. The local nature of an MIS allows for fast solutions in a static distributed setting, which are logarithmic in the number of nodes or in…

分布式、并行与集群计算 · 计算机科学 2015-07-17 Keren Censor-Hillel , Elad Haramaty , Zohar Karnin

Non-orthogonal multiple access (NOMA) has gained significant attention as a potential next-generation multiple access technique. However, its implementation with finite-alphabet inputs faces challenges. Particularly, due to inter-user…

信息论 · 计算机科学 2025-03-11 Mojtaba Vaezi , Xinliang Zhang

Faster-than-Nyquist (FTN) signaling aided non-orthogonal multiple access (NOMA) is conceived and its achievable rate is quantified in the presence of random link delays of the different users. We reveal that exploiting the link delays may…

信息论 · 计算机科学 2021-11-29 Shuangyang Li , Zhiqiang Wei , Weijie Yuan , Jinhong Yuan , Baoming Bai , Derrick Wing Kwan Ng , Lajos Hanzo

This letter investigates the non-coherent Direction of Arrival (DOA) estimation problem dealing with the DOA estimation from magnitude only measurements of the array output. The magnitude squared of the array output is expanded as a…

应用统计 · 统计学 2016-06-22 Hadi Zayyani , Mehdi Korki

Quantum algorithms have the potential to provide exponential speedups over some of the best known classical algorithms. These speedups may enable quantum devices to solve currently intractable problems such as those in the fields of…

量子物理 · 物理学 2018-12-13 Ciarán Ryan-Anderson

In this paper, we consider continuous-time stochastic optimal control problems where the cost is evaluated through a coherent risk measure. We provide an explicit gradient descent-ascent algorithm which applies to problems subject to…

最优化与控制 · 数学 2023-06-23 Gabriel Velho , Jean Auriol , Riccardo Bonalli

Many computer vision problems are formulated as the optimization of a cost function. This approach faces two main challenges: (i) designing a cost function with a local optimum at an acceptable solution, and (ii) developing an efficient…

计算机视觉与模式识别 · 计算机科学 2019-04-15 Jayakorn Vongkulbhisal , Fernando De la Torre , João P. Costeira

It is well known that physical phenomena may be of great help in computing some difficult problems efficiently. A typical example is prime factorization that may be solved in polynomial time by exploiting quantum entanglement on a quantum…

新兴技术 · 计算机科学 2018-05-23 Massimiliano Di Ventra , Fabio L. Traversa

Exploiting stochastic path integral theory, we obtain \emph{by simulation} substantial gains in efficiency for the computation of reaction rates in one-dimensional, bistable, overdamped stochastic systems. Using a well-defined measure of…

计算物理 · 物理学 2016-09-08 Daniel M. Zuckerman , Thomas B. Woolf

In recent years, neutral atom-based quantum computation has been established as a competing alternative for the realization of fault-tolerant quantum computation. However, as with other quantum technologies, various sources of noise limit…

量子物理 · 物理学 2025-12-01 Andrea B. Rava , Kristel Michielsen , J. A. Montanez-Barrera

In this work, we introduce the concept of an entirely new circuit architecture based on the novel, physics-inspired computing paradigm: Memcomputing. In particular, we focus on digital memcomputing machines (DMMs) that can be designed…

新兴技术 · 计算机科学 2020-03-25 John Aiken , Fabio L. Traversa

The use of low-resolution digital-to-analog and analog-to-digital converters (DACs and ADCs) significantly benefits energy efficiency (EE) at the cost of high quantization noise in implementing massive multiple-input multiple-output (MIMO)…

信号处理 · 电气工程与系统科学 2021-08-16 Jinseok Choi , Jeonghun Park , Namyoon Lee

Although quantum computing holds promise for solving Combinatorial Optimization Problems (COPs), the limited qubit capacity of NISQ hardware makes large-scale instances intractable. Conventional methods attempt to bridge this gap through…

量子物理 · 物理学 2026-01-21 Yuhan Huang , Siyuan Jin , Yichi Zhang , Qi Zhao , Jun Qi , Qiming Shao