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With the severe spectrum shortage in conventional cellular bands, millimeter wave (mmW) frequencies between 30 and 300 GHz have been attracting growing attention as a possible candidate for next-generation micro- and picocellular wireless…

网络与互联网体系结构 · 计算机科学 2014-04-29 Mustafa Riza Akdeniz , Yuanpeng Liu , Mathew K. Samimi , Shu Sun , Sundeep Rangan , Theodore S. Rappaport , Elza Erkip

Optical technology is a highly promising platform for quantum computing due to its enormous potential for large-scale, ultrafast computation. However, realizing a programmable and scalable system remains a significant challenge. Here, we…

Reconstructing high-fidelity MR images from undersampled k-space data remains a challenging problem in MRI. While Mamba variants for vision tasks offer promising long-range modeling capabilities with linear-time complexity, their direct…

图像与视频处理 · 电气工程与系统科学 2026-05-05 Hongli Chen , Pengcheng Fang , Yuxia Chen , Yingxuan Ren , Jing Hao , Fangfang Tang , Xiaohao Cai , Shanshan Shan , Feng Liu

Contemporary GPUs are designed to handle long-latency operations effectively; however, challenges such as core occupancy (number of warps in a core) and pipeline width can impede their latency management. This is particularly evident in…

硬件体系结构 · 计算机科学 2024-04-10 Diya Joseph , Juan Luis Aragón , Joan-Manuel Parcerisa , Antonio Gonzalez

This white paper discusses how a "next-generation" Very Large Array (ngVLA) operating in the frequency range 1-116 GHz could be a groundbreaking tool to study the detailed astrophysics of the "matter cycle" in the Milky Way and other…

The maximum entropy method (MEM) is a well known deconvolution technique in radio-interferometry. This method solves a non-linear optimization problem with an entropy regularization term. Other heuristics such as CLEAN are faster but highly…

天体物理仪器与方法 · 物理学 2022-10-27 M. Cárcamo , P. Román , S. Casassus , V. Moral , F. R. Rannou

Incoherent dedispersion is a computationally intensive problem that appears frequently in pulsar and transient astronomy. For current and future transient pipelines, dedispersion can dominate the total execution time, meaning its…

天体物理仪器与方法 · 物理学 2015-06-03 Benjamin R. Barsdell , Matthew Bailes , David G. Barnes , Christopher J. Fluke

We describe a new low-frequency wideband radio survey of the southern sky. Observations covering 72 - 231 MHz and Declinations south of $+30^\circ$ have been performed with the Murchison Widefield Array "extended" Phase II configuration…

The Square Kilometre Array (SKA) project is an international effort to build the world's most sensitive radio telescope operating in the 50 MHz to 14 GHz frequency range. Construction of the SKA is divided into phases, with the first phase…

天体物理仪器与方法 · 物理学 2018-08-15 Sascha Schediwy , David Gozzard

Particle-based simulations and point-cloud applications generate massive, irregular datasets that challenge storage, I/O, and real-time analytics. Traditional compression techniques struggle with irregular particle distributions and GPU…

分布式、并行与集群计算 · 计算机科学 2025-08-15 Ruoyu Li , Yafan Huang , Longtao Zhang , Zhuoxun Yang , Sheng Di , Jiajun Huang , Jinyang Liu , Jiannan Tian , Xin Liang , Guanpeng Li , Hanqi Guo , Franck Cappello , Kai Zhao

The domain of radio astronomy is currently facing significant computational challenges, foremost amongst which are those posed by the development of the world's largest radio telescope, the Square Kilometre Array (SKA). Preliminary…

天体物理仪器与方法 · 物理学 2016-11-17 R. J. Lyon , J. M. Brooke , J. D. Knowles , B. W. Stappers

The rapid updates in error-resilient applications along with their quest for high throughput have motivated designing fast approximate functional units for Field-Programmable Gate Arrays (FPGAs). Studies that proposed imprecise functional…

硬件体系结构 · 计算机科学 2022-06-29 Zahra Ebrahimi , Muhammad Zaid , Mark Wijtvliet , Akash Kumar

Transient radio phenomena and pulsars are one of six LOFAR Key Science Projects (KSPs). As part of the Transients KSP, the Pulsar Working Group (PWG) has been developing the LOFAR Pulsar Data Pipelines to both study known pulsars as well as…

天体物理仪器与方法 · 物理学 2015-03-17 A. Alexov , J. W. T. Hessels , J. D. Mol , B. Stappers , J. van Leeuwen

Interferometric radio telescopes often rely on computationally expensive O(N^2) correlation calculations; fortunately these computations map well to massively parallel accelerators such as low-cost GPUs. This paper describes the OpenCL…

天体物理仪器与方法 · 物理学 2015-03-23 Peter Klages , Kevin Bandura , Nolan Denman , Andre Recnik , Jonathan Sievers , Keith Vanderlinde

This contribution describes some recent advances in the parallelization of the generation and processing of radio signals emitted by particle showers in CORSIKA 8. CORSIKA 8 is a Monte Carlo simulation framework for modeling ultra-high…

天体物理仪器与方法 · 物理学 2023-09-08 A. Augusto Alves , Nikolaos Karastathis , Tim Huege

GWAC will have been built an integrated FOV of 5,000 $degree^2$ and have already built 1,800 square $degree^2$. The limit magnitude of a 10-second exposure image in the moonless night is 16R. In each observation night, GWAC produces about…

天体物理仪器与方法 · 物理学 2021-11-17 Yang Xu , Liping Xin , Xuhui Han , Hongbo Cai , Lei Huang , Huali Li , Xiaomeng Lu , Yulei Qiu , Chao Wu , Guangwei Li , Jing Wang , Jianyan Wei , Maohai Huang

To cope with the growing demand for wireless data and to extend service coverage, future 5G networks will increasingly rely on the use of low powered nodes to support massive connectivity in diverse set of applications and services [1]. To…

信息论 · 计算机科学 2014-07-08 H. Baligh , M. Hong , W. -C. Liao , Z. -Q. Luo , M. Razaviyayn , M. Sanjabi , R. Sun

Sensitive radio instruments are optimized for observing faint astronomical sources, and usually need to attenuate the received signal when observing the Sun. There are only a handful of flux density calibrators which can comfortably be…

太阳与恒星天体物理 · 物理学 2022-03-03 Devojyoti Kansabanik , Surajit Mondal , Divya Oberoi , Ayan Biswas , Shilpi Bhunia

This paper outlines how the new GaLactic and Extragalactic All-sky MWA Survey (GLEAM, Wayth et al. 2015), observed by the Murchison Widefield Array covering the frequency range 72 - 231 MHz, allows identification of a new large, complete,…

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