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The emerging orthogonal time frequency space (OTFS) modulation technique has shown its superiority to the current orthogonal frequency division multiplexing (OFDM) scheme, in terms of its capabilities of exploiting full time-frequency…

信号处理 · 电气工程与系统科学 2019-12-02 Weijie Yuan , Zhiqiang Wei , Jinhong Yuan , Derrick Wing Kwan Ng

This work explores Doppler information from a millimetre-Wave (mm-W) Frequency-Modulated Continuous-Wave (FMCW) scanning radar to make odometry estimation more robust and accurate. Firstly, doppler information is added to the scan masking…

机器人学 · 计算机科学 2023-12-15 Fraser Rennie , David Williams , Paul Newman , Daniele De Martini

Precise localization is one key element of the Internet of Things (IoT). Especially concepts for position estimation when Global Navigation Satellite Systems (GNSS) are unavailable have moved into the focus. One crucial component for…

分布式、并行与集群计算 · 计算机科学 2023-06-09 Thomas Maul , Sebastian Klob , Joerg Robert

The performance of all-optical dual-hop relayed free-space optical communication systems is analytically studied and evaluated. We consider the case when the total received signal undergoes turbulence-induced channel fading, modeled by the…

信息论 · 计算机科学 2018-10-18 Nikolaos I. Miridakis , Dimitrios D. Vergados , Angelos Michalas

We propose Fast Radio Burst (FRB) timing, which uses the precision measurements of the arrival time differences of repeated FRB signals along multiple sightlines, as a new probe of gravitational waves (GWs) around nHz to $\mu$Hz…

广义相对论与量子宇宙学 · 物理学 2024-07-19 Zhiyao Lu , Lian-Tao Wang , Huangyu Xiao

Polarimetric GNSS-R systems, equipped with an additional polarization channel, offer enhanced capabilities for separating vegetation and surface scattering effects, thereby improving GNSS-R land remote sensing applications such as soil…

地球物理 · 物理学 2025-04-15 Dinan Bai , Christopher S. Ruf , Delwyn Moller

The problem of off-grid direction-of-arrival (DOA) estimation is investigated. We develop a grid-based method to jointly estimate the closest spatial frequency (the sine of DOA) grids, and the gaps between the estimated grids and the…

信号处理 · 电气工程与系统科学 2022-03-01 Huiping Huang , Hing Cheung So , Abdelhak M. Zoubir

Achieving high resolution time-of-arrival (TOA) estimation in multipath propagation scenarios from bandlimited observations of communication signals is challenging because the multipath channel impulse response (CIR) is not bandlimited.…

信号处理 · 电气工程与系统科学 2019-04-19 Tarik Kazaz , Raj Thilak Rajan , Gerard J. M. Janssen , Alle-Jan van der Veen

Multispectral imaging coupled with Artificial Intelligence, Machine Learning and Signal Processing techniques work as a feasible alternative for laboratory testing, especially in food quality control. Most of the recent related research has…

This letter studies the performance of a single gateway LoRa system in the presence of different interference considering the imperfect orthogonality effect. It utilizes concepts of stochastic geometry to present a low-complexity…

网络与互联网体系结构 · 计算机科学 2020-11-03 Qahhar Muhammad Qadir

This paper presents a round-trip strategy of multirotors subject to unknown flow disturbances. During the outbound flight, the vehicle immediately utilizes the wind disturbance estimations in feedback control, as an attempt to reduce the…

机器人学 · 计算机科学 2021-06-11 Jaeseung Byun , Simo A. Mäkiharju , Mark W. Mueller

In this study, we consider a remote estimation system that estimates a time-varying target based on sensor data transmitted over wireless channel. Due to transmission errors, some data packets fail to reach the receiver. To mitigate this,…

信号处理 · 电气工程与系统科学 2025-01-07 Sirin Chakraborty , Yin Sun

In this paper, the error performance of on-off frequency shift keying (OOFSK) modulation over fading channels is analyzed when the receiver is equipped with multiple antennas. The analysis is conducted in two cases: the coherent scenario…

信息论 · 计算机科学 2016-11-17 Qingyun Wang , Mustafa Cenk Gursoy

A correlated transmission and reflection (T&R) phase-shift model is proposed for passive lossless simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs). A STAR-RIS-aided two-user downlink communication…

信息论 · 计算机科学 2022-09-14 Jiaqi Xu , Yuanwei Liu , Xidong Mu , Robert Schober , H. Vincent Poor

We analyze the frequency dependence of the dispersion measure (DM), the column density of free electrons to a pulsar, caused by multipath scattering from small scale electron-density fluctuations. The DM is slightly different along each…

天体物理仪器与方法 · 物理学 2016-01-21 J. M. Cordes , R. M. Shannon , D. R. Stinebring

In this paper, we study the information theoretic performance of the modified time-reversal maximum ratio combining (TR-MRC) receiver (presented in [9]) with the spatially averaged periodogram-based carrier frequency offset (CFO) estimator…

信息论 · 计算机科学 2016-11-16 Sudarshan Mukherjee , Saif Khan Mohammed

This paper presents a novel approach for estimating the modes of an observed non-stationary mixture signal. A link is first established between the short-time Fourier transform and the sparse sampling theory, where the observations are…

数值分析 · 数学 2022-12-23 Quentin Legros , Dominique Fourer

In recent years, instrumentation enabling pulsar observations with unprecedentedly high fractional bandwidth has been under development which can be used to substantially improve the precision of pulsar timing experiments. The traditional…

For radio-based time-of-arrival (TOA) positioning systems applied in harsh environments, obstacles in the surroundings and on the vehicle itself will block the signals from the anchors, reduce the number of available TOA measurements and…

信号处理 · 电气工程与系统科学 2022-07-19 Xinyuan An , Sihao Zhao , Xiaowei Cui , Gang Liu , Mingquan Lu

This paper studies the detection performance of a multiple-input-multiple-output (MIMO) multifunction radio frequency (MFRF) system, which simultaneously supports radar, communication, and jamming. We show that the detection performance of…

信息论 · 计算机科学 2022-08-29 Bo Tang , Petre Stoica