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This paper studies energy-efficient power allocation schemes for secondary users in sensing-based spectrum sharing cognitive radio systems. It is assumed that secondary users first perform channel sensing possibly with errors and then…

信息论 · 计算机科学 2016-02-12 Gozde Ozcan , M. Cenk Gursoy , Nghi Tran , Jian Tang

In this paper, we investigate the resource allocation design for integrated sensing and communication (ISAC) in distributed antenna networks (DANs). In particular, coordinated by a central processor (CP), a set of remote radio heads (RRHs)…

信息论 · 计算机科学 2023-05-03 Dongfang Xu , Ata Khalili , Xianghao Yu , Derrick Wing Kwan Ng , Robert Schober

This article provides an overview of the state-of-art results on communication resource allocation over space, time, and frequency for emerging cognitive radio (CR) wireless networks. Focusing on the…

信息论 · 计算机科学 2016-11-17 Rui Zhang , Ying-Chang Liang , Shuguang Cui

In opportunistic cognitive radio networks, when the primary signal is very weak compared to the background noise, the secondary user requires long sensing time to achieve a reliable spectrum sensing performance, leading to little remaining…

信息论 · 计算机科学 2024-04-29 Jungang Ge , Ying-Chang Liang , Sumei Sun , Yonghong Zeng , Zhidong Bai

In this paper, a cooperative spectrum sensing scheme based on compressive sensing is proposed. In this scheme, secondary users (SUs) are organized in clusters. In each cluster, SUs forward their compressed signals to the cluster head. Then,…

信息论 · 计算机科学 2019-12-12 Fatima Salahdine , Elias Ghribi , Naima Kaabouch

A cognitive radio system has the ability to observe and learn from the environment, adapt to the environmental conditions, and use the radio spectrum more efficiently. It allows secondary users (SUs) to use the primary users (PUs) channels…

信息论 · 计算机科学 2018-02-13 Fatima Salahdine

Opportunistic spectrum access has the potential to increase the efficiency of spectrum utilization in cognitive radio networks (CRNs). In CRNs, both spectrum sensing and resource allocation (SSRA) are critical to maximizing system…

系统与控制 · 电气工程与系统科学 2024-12-10 David R. Nickel , Anindya Bijoy Das , David J. Love , Christopher G. Brinton

In this paper, we use a reconfigurable intelligent surface (RIS) to enhance the radar sensing and communication capabilities of a mmWave dual function radar communication system. To simultaneously localize the target and to serve the user,…

信号处理 · 电气工程与系统科学 2021-05-06 R. S. Prasobh Sankar , Battu Deepak , Sundeep Prabhakar Chepuri

In cognitive radio networks (CRN), Out-of-Band (OoB) spectrum sensing provides seamless communication. Cognitive radio (CR) users, so called secondary users (SUs), should avoid interference with primary users (PUs), the owner of the…

网络与互联网体系结构 · 计算机科学 2014-07-15 Yalew Zelalem Jembre , Young-June Choi

Joint communication and sensing (JCAS) networks are envisioned as a key enabler for a variety of applications which demand reliable wireless connectivity along with accurate and robust sensing capability. When sensing and communication…

系统与控制 · 电气工程与系统科学 2024-01-26 Navid Keshtiarast , Pradyumna Kumar Bishoyi , Marina Petrova

In this paper, we study a communication-centric integrated sensing and communication (ISAC) approach, where an access point (AP) communicates with users, while a passive radar (PR) is present in the environment. We investigate the…

信号处理 · 电气工程与系统科学 2022-10-24 Ahmad Bazzi , Marwa Chafii

In this work, a reconfigurable intelligent surface (RIS)-aided millimeter wave (mmWave) multiple-input multiple-output (MIMO) cognitive radio (CR) downlink operating in the underlay mode is investigated. The cognitive base station (CBS)…

信号处理 · 电气工程与系统科学 2024-06-14 Jitendra Singh , Suraj Srivastava , Surya P. Yadav , Aditya K. Jagannatham , Lajos Hanzo

We model a dense wireless local area network where the access points (APs) employ carrier sense multiple access (CSMA)-type medium access control protocol. In our model, the spatial locations of the set of active APs are modeled using the…

信息论 · 计算机科学 2022-09-05 Priyabrata Parida , Harpreet S. Dhillon

Integrated sensing and communication (ISAC), which simultaneously performs sensing and communication functions within a shared frequency band and hardware platform, has emerged as a promising technology for future wireless systems.…

信号处理 · 电气工程与系统科学 2024-04-02 Qi Zhu , Ming Li , Rang Liu , Qian Liu

Integrated sensing and communication is a key feature in next-generation wireless networks, enabling joint data transmission and environmental radar sensing on shared spectrum. In multi-user scenarios, simultaneous transmissions cause…

信号处理 · 电气工程与系统科学 2026-01-30 Laurits Randers , Martin Voigt Vejling , Petar Popovski

Surrounding perceptions are quintessential for safe driving for connected and autonomous vehicles (CAVs), where the Bird's Eye View has been employed to accurately capture spatial relationships among vehicles. However, severe inherent…

网络与互联网体系结构 · 计算机科学 2024-08-22 Zhengru Fang , Senkang Hu , Haonan An , Yuang Zhang , Jingjing Wang , Hangcheng Cao , Xianhao Chen , Yuguang Fang

Integrated sensing and communication (ISAC) is emerging as a pivotal technology for next-generation wireless networks. However, existing ISAC systems are based on fixed-position antennas (FPAs), which inevitably incur a loss in performance…

信息论 · 计算机科学 2025-07-14 Jingze Ding , Zijian Zhou , Xiaodan Shao , Bingli Jiao , Rui Zhang

In this paper, we study a multiple-input multiple-output (MIMO) integrated sensing and communication (ISAC) system where one multi-antenna base station (BS) sends information to a user with multiple antennas in the downlink and…

信息论 · 计算机科学 2023-12-21 Chan Xu , Shuowen Zhang

A core challenge in physical-layer security is the difficulty of obtaining the channel state information (CSI) of potential eavesdroppers. The inherent sensing functionality of integrated sensing and communication (ISAC) systems offers a…

信息论 · 计算机科学 2026-04-28 Yaxuan Chen , Guangchi Zhang , Miao Cui , Hao Fu , Qingqing Wu , Rui Zhang

To improve signal-to-interference ratio (SIR) and make better use of file diversity provided by random caching, we consider two types of linear receivers, i.e., maximal ratio combining (MRC) receiver and partial zero forcing (PZF) receiver,…

信息论 · 计算机科学 2018-01-10 Dongdong Jiang , Ying Cui