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In this paper, scanning for target detection, and multi-target tracking in a cognitive radar system are considered, and adaptive radar resource management is investigated. In particular, time management for radar scanning and tracking of…

Signal Processing · Electrical Eng. & Systems 2025-07-08 Ziyang Lu , M. Cenk Gursoy , Chilukuri K. Mohan , Pramod K. Varshney

Radar sensors are crucial for environment perception of driver assistance systems as well as autonomous vehicles. Key performance factors are weather resistance and the possibility to directly measure velocity. With a rising number of radar…

Signal Processing · Electrical Eng. & Systems 2020-12-02 Johanna Rock , Wolfgang Roth , Paul Meissner , Franz Pernkopf

More and more emerging Internet of Things (IoT) applications involve status updates, where various IoT devices monitor certain physical processes and report their latest statuses to the relevant information fusion nodes. A new performance…

Networking and Internet Architecture · Computer Science 2020-04-01 Zixiao Han , Jiaxin Liang , Yifan Gu , He Chen

Cognitive Radar Networks were proposed by Simon Haykin in 2006 to address problems with large legacy radar implementations - primarily, single-point vulnerabilities and lack of adaptability. This work proposes to leverage the adaptability…

Signal Processing · Electrical Eng. & Systems 2023-10-27 William W. Howard , Samuel R. Shebert , Benjamin H. Kirk , R. Michael Buehrer

Radar sensors are crucial for environment perception of driver assistance systems as well as autonomous vehicles. With a rising number of radar sensors and the so far unregulated automotive radar frequency band, mutual interference is…

Signal Processing · Electrical Eng. & Systems 2022-01-26 Johanna Rock , Wolfgang Roth , Mate Toth , Paul Meissner , Franz Pernkopf

Spectrum is a scarce commodity, and considering the spectrum scarcity faced by the wireless-based service providers led to high congestion levels. Technical inefficiencies from pooled spectrum (this is nothing but the "common carrier…

Networking and Internet Architecture · Computer Science 2010-06-30 Santosh Kumar Singh

Modern sensing and monitoring applications typically consist of sources transmitting updates of different sizes, ranging from a few bytes (position, temperature, etc.) to multiple megabytes (images, video frames, LIDAR point scans, etc.).…

Systems and Control · Electrical Eng. & Systems 2025-12-09 Zhuoyi Zhao , Vishrant Tripathi , Igor Kadota

Owing to the ever-increasing demand in wireless spectrum, Cognitive Radio (CR) was introduced as a technique to attain high spectral efficiency. As the number of secondary users (SUs) connecting to the cognitive radio network is on the…

Information Theory · Computer Science 2020-04-10 Thulasi Tholeti , Vishnu Raj , Sheetal Kalyani

Asynchronous Distributed Reinforcement Learning (DRL) can suffer from degraded convergence when model updates become stale, often the result of network congestion and packet loss during large-scale training. This work introduces a network…

Networking and Internet Architecture · Computer Science 2025-07-09 Nehal Baganal Krishna , Anam Tahir , Firas Khamis , Mina Tahmasbi Arashloo , Michael Zink , Amr Rizk

Age-of-Information (AoI) is a performance metric for scheduling systems that measures the freshness of the data available at the intended destination. AoI is formally defined as the time elapsed since the destination received the recent…

Systems and Control · Electrical Eng. & Systems 2021-01-20 Archiki Prasad , Vishal Jain , Sharayu Moharir

This paper investigates information freshness of multichannel access in information update systems. Age of information (AoI) is a fundamentally important metric to characterize information freshness, defined as the time elapsed since the…

Networking and Internet Architecture · Computer Science 2021-06-02 Jiaxin Liang , Haoyuan Pan , Soung Chang Liew

Beyond fifth generation wireless communication networks (B5G) are applied in many use-cases, such as industrial control systems, smart public transport, and power grids. Those applications require innovative techniques for timely…

Information Theory · Computer Science 2024-10-28 Robert-Jeron Reifert , Stefan Roth , Aydin Sezgin

In this work, we study age-optimal scheduling with stability constraints in a multiple access channel with two heterogeneous source nodes transmitting to a common destination. The first node is connected to a power grid and it has randomly…

Information Theory · Computer Science 2021-02-26 Zheng Chen , Nikolaos Pappas , Emil Björnson , Erik G. Larsson

With the rising demand for high-rate and timely communications, fog radio access networks (F-RANs) offer a promising solution. This work investigates age of information (AoI) performance in F-RANs, consisting of multiple content users…

Signal Processing · Electrical Eng. & Systems 2025-08-05 Xingran Chen , Kai Li , Kun Yang

The emerging mission-critical Internet of Things (IoT) play a vital role in remote healthcare, haptic interaction, and industrial automation, where timely delivery of status updates is crucial. The Age of Information (AoI) is an effective…

Networking and Internet Architecture · Computer Science 2023-11-27 Hossam Farag , Mikael Gidlund , Cedomir Stefanovic

This study considers a wireless network where multiple nodes transmit status updates to a base station (BS) via a shared, error-free channel with limited bandwidth. The status updates arrive at each node randomly. We use the Age of…

Information Theory · Computer Science 2025-03-14 Yuqiao He , Yuchao Chen , Jintao Wang , Jian Song

Federated learning enables distributed model training across clients without raw data exchange, but in wireless implementations, frequent parameter updates cause high communication overhead. Existing research often assumes known channel…

Machine Learning · Computer Science 2025-03-25 Zhiyin Li , Yubo Yang , Tao Yang , Ziyu Guo , Xiaofeng Wu , Bo Hu

A barrage relay network (BRN) is a broadcast oriented ad hoc network involving autonomous cooperative communication, a slotted time-division frame format, and a coarse slot-level synchronization. While inherently a broadcast protocol, BRNs…

Information Theory · Computer Science 2016-11-08 Salvatore Talarico , Matthew C. Valenti , Thomas R. Halford

Cognitive radio (CR) has emerged as a promising technology to improve spectrum utilization. Capacity analysis is very useful in investigating the ultimate performance limits for wireless networks. Meanwhile, with increasing potential future…

Networking and Internet Architecture · Computer Science 2015-01-16 Xiaoxiong Zhong , Yang Qin , Li Li

Unmanned aerial vehicles (UAVs) equipped with integrated sensing and communication (ISAC) capabilities are envisioned to play a pivotal role in future wireless networks due to their enhanced flexibility and efficiency. However, jointly…

Signal Processing · Electrical Eng. & Systems 2025-07-22 Yu Bai , Yifan Zhang , Boxuan Xie , Zheng Chang , Yanru Zhang , Riku Jantti , Zhu Han