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In this paper, a multi-objective optimization problem (MOOP) is proposed for maximizing the achievable finite blocklength (FBL) rate while minimizing the utilized channel blocklengths (CBLs) in a reconfigurable intelligent surface…

信息论 · 计算机科学 2022-06-03 Ramin Hashemi , Samad Ali , Nurul Huda Mahmood , Matti Latva-aho

This paper investigates the coexistence of non-orthogonal multiple access (NOMA) and full-duplex (FD) to improve both spectral efficiency (SE) and user fairness. In such a scenario, NOMA based on the successive interference cancellation…

信号处理 · 电气工程与系统科学 2019-08-05 Hieu V. Nguyen , Van-Dinh Nguyen , Octavia A. Dobre , Diep N. Nguyen , Eryk Dutkiewicz , Oh-Soon Shin

We review the conventional phase-locking technique in the long-term stabilization of the mode-locked fiber laser and investigate the phase noise limitation of the conventional technique. To break the limitation, we propose an improved…

光学 · 物理学 2014-03-12 Dong Hou , Bo Ning , Shuangyou Zhang , Jiutao Wu , Jianye Zhao

This article considers the problem of source localization (SL) using possibly unreliable time-of-arrival (TOA) based range measurements. Adopting the strategy of statistical robustification, we formulate TOA SL as minimization of a…

信号处理 · 电气工程与系统科学 2024-01-18 Wenxin Xiong , Christian Schindelhauer , Hing Cheung So

The Frank-Wolfe (FW) method, which implements efficient linear oracles that minimize linear approximations of the objective function over a fixed compact convex set, has recently received much attention in the optimization and machine…

最优化与控制 · 数学 2024-01-19 Liaoyuan Zeng , Yongle Zhang , Guoyin Li , Ting Kei Pong , Xiaozhou Wang

A novel joint symbol timing and carrier frequency offset (CFO) estimation algorithm is proposed for reduced-guard-interval coherent optical orthogonal frequency-division multiplexing (RGI-CO-OFDM) systems. The proposed algorithm is based on…

信号处理 · 电气工程与系统科学 2018-01-08 Oluyemi Omomukuyo , Deyuan Chang , Jingwen Zhu , Octavia Dobre , Ramachandran Venkatesan , Telex Ngatched , Chuck Rumbolt

Federated Learning (FL) refers to the paradigm where multiple worker nodes (WNs) build a joint model by using local data. Despite extensive research, for a generic non-convex FL problem, it is not clear, how to choose the WNs' and the…

机器学习 · 计算机科学 2021-06-22 Prashant Khanduri , Pranay Sharma , Haibo Yang , Mingyi Hong , Jia Liu , Ketan Rajawat , Pramod K. Varshney

This letter proposes a dynamic joint communications and sensing (JCAS) framework to adaptively design dedicated sensing and communications precoders. We first formulate a stochastic control problem to maximize the long-term average…

信号处理 · 电气工程与系统科学 2025-03-19 Abolfazl Zakeri , Nhan Thanh Nguyen , Ahmed Alkhateeb , Markku Juntti

This paper considers networked sensing in cellular network, where multiple base stations (BSs) first compress their received echo signals from multiple targets and then forward the quantized signals to the central unit (CU) via…

信号处理 · 电气工程与系统科学 2024-09-09 Weifeng Zhu , Shuowen Zhang , Liang Liu

Spatial filtering based on multiple-input multiple-output (MIMO) processing is a promising approach to jammer mitigation. Effective MIMO data detectors that mitigate smart jammers have recently been proposed, but they all assume perfect…

信号处理 · 电气工程与系统科学 2025-01-28 Gian Marti , Flurin Arquint , Christoph Studer

Motivated by single-particle cryo-electron microscopy, multi-reference alignment (MRA) models the task of recovering an unknown signal from multiple noisy observations corrupted by random rotations. The standard approach,…

信号处理 · 电气工程与系统科学 2026-01-09 Shay Kreymer , Amnon Balanov , Tamir Bendory

The continuously increasing bandwidth and antenna aperture available in wireless networks laid the foundation for developing competitive positioning solutions relying on communications standards and hardware. However, poor propagation…

This paper investigates continuous-time motion planning under Signal Temporal Logic (STL) specifications. The goal is to generate smooth robot trajectories that satisfy high-level logical and timing requirements while respecting low-level…

机器人学 · 计算机科学 2026-05-25 Yu Chen , Ancheng Hou , Mingyang Feng , Xiao Yu , Xiang Yin

In this paper, we develop new fast and efficient algorithms for designing single/multiple unimodular waveforms/codes with good auto- and cross-correlation or weighted correlation properties, which are highly desired in radar and…

信息论 · 计算机科学 2018-02-08 Yongzhe Li , Sergiy A. Vorobyov

In a time-division broadcast positioning system (TDBPS), localizing mobile targets using classical time difference of arrival (TDOA) methods poses significant challenges. Concurrent TDOA measurements are infeasible because targets receive…

信号处理 · 电气工程与系统科学 2025-11-11 Chenxin Tu , Xiaowei Cui , Gang Liu , Sihao Zhao , Mingquan Lu

This paper presents a fundamental performance analysis of joint location and velocity estimation in a cell-free (CF) MIMO integrated sensing and communication (ISAC) system. Unlike prior studies that primarily rely on continuous-time signal…

信号处理 · 电气工程与系统科学 2025-06-02 Guoqing Xia , Pei Xiao , Qu Luo , Bing Ji , Yue Zhang , Huiyu Zhou

A new algorithm for 3D localization in multiplatform radar networks, comprising one transmitter and multiple receivers, is proposed. To take advantage of the monostatic sensor radiation pattern features, ad-hoc constraints are imposed in…

信号处理 · 电气工程与系统科学 2022-04-06 Augusto Aubry , Paolo Braca , Antonio De Maio , Angela Marino

Through the last decade, we have witnessed a surge of Internet of Things (IoT) devices, and with that a greater need to choreograph their actions across both time and space. Although these two problems, namely time synchronization and…

机器学习 · 计算机科学 2017-11-13 Amr Alanwar , Henrique Ferraz , Kevin Hsieh , Rohit Thazhath , Paul Martin , Joao Hespanha , Mani Srivastava

We propose hybrid methods for localization in wireless sensor networks fusing noisy range measurements with angular information (extracted from video). Compared with conventional methods that rely on a single sensed variable, this may pave…

最优化与控制 · 数学 2018-01-26 Beatriz Quintino Ferreira , João Gomes , Cláudia Soares , João P. Costeira

A novel non-orthogonal multiple access (NOMA) based low-delay service framework is proposed for fog radio access networks (F-RANs). Fog access points (FAPs) leverage NOMA for local delivery of cached content, while the cloud access point…

信号处理 · 电气工程与系统科学 2026-02-26 Yuan Ai , Xidong Mu , Pengbo Si , Yuanwei Liu