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Mid-frequency band gravitational-wave detectors will be complementary for the existing Earth-based detectors (sensitive above 10 Hz or so) and the future space-based detectors such as LISA, which will be sensitive below around 10 mHz. A…

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…

信息论 · 计算机科学 2026-05-21 Xiaodan Shao , Chuangye Shan , Weihua Zhuang , Xuemin Shen

A Euro-Asian network of four gravitational-wave (GW) interferometers is considered, taking into account the plan to create such a detector in Novosibirsk. The efficiency of the network is assessed by typical numerical criteria, which also…

广义相对论与量子宇宙学 · 物理学 2021-12-08 Valentin Rudenko , Svetlana Andrusenko , Daniil Krichevskiy , Gevorg Manucharyan

The detection of gravitational wave signals by Advanced LIGO and Advanced Virgo enables us to probe the polarization content of gravitational waves. In general relativity, only tensor modes are present, while in a variety of alternative…

广义相对论与量子宇宙学 · 物理学 2020-06-05 Peter T. H. Pang , Rico K. L. Lo , Isaac C. F. Wong , Tjonnie G. F. Li , Chris Van Den Broeck

Movable Antenna (MA) technology is emerging as a promising advancement with the potential to significantly enhance the performance of future wireless communication and sensing systems. In this paper, we address two-dimensional (2D)…

信号处理 · 电气工程与系统科学 2026-04-07 Chengzhi Ye , Ruoyu Zhang , Lei Yao , Wen Wu

This paper describes "Variable Zo," a novel and proprietary approach to antenna design and optimization. The new methodology is illustrated by applying it to the design of a resistively-loaded bowtie antenna and to two broadband Yagi-Uda…

其他计算机科学 · 计算机科学 2011-07-15 Richard A. Formato

In this letter, we investigate the direction-of-arrival (DOA) estimation problem for wireless sensing with movable antenna (MA) systems in the presence of unknown antenna position errors (APE). To achieve robust wireless sensing, we…

信号处理 · 电气工程与系统科学 2026-05-25 Chengzhi Ye , Ruoyu Zhang , Wen Wu , Byonghyo Shim

Efficient and low-complexity beamforming design is an important element of satellite communication systems with mobile receivers equipped with phased arrays. In this work, we apply the simultaneous perturbation stochastic approximation…

信号处理 · 电气工程与系统科学 2021-04-20 Zheng Chen , Håkan Johansson

We discuss the sensitivity to anisotropies of stochastic gravitational-wave backgrounds (GWBs) observed via space-based interferometer. In addition to the unresolved galactic binaries as the most promising GWB source of the planned Laser…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Hideaki Kudoh , Atsushi Taruya

The gravitational wave (GW) has opened a new window to the universe beyond the electromagnetic spectrum. Since 2015, dozens of GW events have been caught by the ground-based GW detectors through laser interferometry. However, all the…

广义相对论与量子宇宙学 · 物理学 2020-10-07 Mengxu Liu , Biping Gong

Precise Time-of-Arrival (TOA) estimations of aircraft and drone signals are important for a wide set of applications including aircraft/drone tracking, air traffic data verification, or self-localization. Our focus in this work is on TOA…

信号处理 · 电气工程与系统科学 2018-02-21 Roberto Calvo-Palomino , Fabio Ricciato , Blaz Repas , Domenico Giustiniano , Vincent Lenders

Gravitational-wave data from advanced-era interferometric detectors consists of background Gaussian noise, frequent transient artefacts, and rare astrophysical signals. Multiple search algorithms exist to detect the signals from compact…

广义相对论与量子宇宙学 · 物理学 2026-01-13 Gregory Ashton , Ann-Kristin Malz , Nicolo Colombo

In this letter, we propose to deploy rotatable antennas (RAs) at the base station (BS) to enhance both communication and sensing (C&S) performances, by exploiting a new spatial degree-of-freedom (DoF) offered by array rotation.…

信号处理 · 电气工程与系统科学 2025-03-14 Chao Zhou , Changsheng You , Beixiong Zheng , Xiaodan Shao , Rui Zhang

We present a detailed analysis of the International Pulsar Timing Array (IPTA) Second Mock Data Challenge. We tested our analysis methods using the open datasets, and then analyzed the closed datasets. In both the open and the closed…

天体物理仪器与方法 · 物理学 2020-01-01 P. T. Baker , P. R. Brook , W. C. Fiore , N. Garver-Daniels , A. R. Kaiser , M. T. Lam , B. J. Shapiro-Albert , C. A. Witt

A full multi--dimensional characterization of the angle of arrival (AoA) has immediate applications to the efficient operation of modern wireless communication systems. In this work, we develop a compressed sensing based method to extract…

信息论 · 计算机科学 2020-08-31 Matilde Sánchez-Fernández , Vahid Jamali , Jaime Llorca , Antonia Tulino

Conventional fixed-orientation antenna (FOA) arrays offer limited degrees of freedom (DoF) for flexible beamforming such as null steering. To address this limitation, we propose a new rotatable antenna array (RAA) architecture in this…

信号处理 · 电气工程与系统科学 2025-12-16 Yingqi Wen , Weidong Mei , Yike Xie , Beixiong Zheng , Zhi Chen , Boyu Ning

A cooperative architecture is proposed for integrated sensing and communication (ISAC) networks, incorporating coordinated multi-point (CoMP) transmission along with multi-static sensing. We investigate how the allocation of…

信息论 · 计算机科学 2025-06-13 Kaitao Meng , Kawon Han , Christos Masouros , Lajos Hanzo

This paper proposed a low-complexity antenna layout-aware (ALA) covariance matrix estimation method. In the estimation process, antenna layout is assumed known at the estimator. Using this information, the estimator finds antenna pairs with…

信息论 · 计算机科学 2019-05-01 Shangbin Wu , Xiaoqing Zhang

Precise knowledge of a laser's wavelength is crucial for applications from spectroscopy to telecommunications. Here we present a wavemeter which operates on the Talbot effect. Tone parameter extraction algorithms are used to retrieve the…

仪器与探测器 · 物理学 2019-10-02 Ningren Han , Gavin N. West , Amir H. Atabaki , David Burghoff , Rajeev J. Ram

LISA and Taiji are expected to form a space-based gravitational-wave (GW) detection network in the future. In this work, we make a forecast for the cosmological parameter estimation with the standard siren observation from the LISA-Taiji…

广义相对论与量子宇宙学 · 物理学 2021-10-12 Ling-Feng Wang , Shang-Jie Jin , Jing-Fei Zhang , Xin Zhang