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Developing an efficient spectrum access policy enables cognitive radios to dramatically increase spectrum utilization while ensuring predetermined quality of service levels for primary users. In this paper, modeling, performance analysis,…

Information Theory · Computer Science 2014-09-04 Hossein Shokri-Ghadikolaei , Carlo Fischione

One of the most important challenges in deploying cognitive radio networks (CRNs) is to find a common control channel (CCC) to all secondary users (SUs) that enables efficient CR communications. This challenge is attributed to the dynamic…

Networking and Internet Architecture · Computer Science 2017-07-25 Esraa Jarrah

In this paper, we investigate a time-slotted cognitive setting with buffered primary and secondary users. In order to alleviate the negative effects of misdetection and false alarm probabilities, a novel design of spectrum access mechanism…

Information Theory · Computer Science 2013-03-26 Ahmed El Shafie

In this work, we propose three pilot assignment schemes to reduce the effect of pilot contamination in cell-free massive multiple-input-multiple-output (MIMO) systems. Our first algorithm, which is based on the idea of random sequential…

Information Theory · Computer Science 2021-05-21 Priyabrata Parida , Harpreet S. Dhillon

Cognitive Radio Network (CRN) provides effective capabilities for resource allocation with the valuable spectrum resources in the network. It provides the effective allocation of resources to the unlicensed users or Secondary Users (SUs) to…

Networking and Internet Architecture · Computer Science 2023-12-14 Aravindkumaran S , D. Saraswady

Designing an efficient scheme in physical layer enables cognitive radio (CR) users to efficiently utilize resources dedicated to primary users (PUs). In this paper in order to maximize the SU's throughput, the SU's transceivers beamforming…

Information Theory · Computer Science 2012-06-26 Adnan Gavili , Masoumeh Nasiri Kenari

Effective multi-robot teams require the ability to move to goals in complex environments in order to address real-world applications such as search and rescue. Multi-robot teams should be able to operate in a completely decentralized…

Robotics · Computer Science 2021-09-16 Brian Reily , Terran Mott , Hao Zhang

This paper studies robust resource allocation algorithm design for a multiuser multiple-input single-output (MISO) cognitive radio (CR) downlink communication network. We focus on a secondary system which provides unicast secure wireless…

Information Theory · Computer Science 2016-11-15 Derrick Wing Kwan Ng , Mohammad Shaqfeh , Robert Schober , Hussein Alnuweiri

This study investigates the outage performance of an under-laying wireless-powered secondary system that reuses the primary users (PU) spectrum in a multiple-input multiple-output (MIMO) cognitive radio (CR) network. Each secondary user…

Information Theory · Computer Science 2023-09-19 Iman Pazouki , Roshanak Soltani , Mohammad Lari

Cognitive radio networks (CRNs) are a key mechanism for alleviating spectrum scarcity by enabling secondary users (SUs) to opportunistically access licensed frequency bands without harmful interference to primary users (PUs). To address…

Networking and Internet Architecture · Computer Science 2026-04-03 Deemah H. Tashman , Soumaya Cherkaoui

An uplink multi secondary user (SU) cognitive radio system having average delay constraints as well as an interference constraint to the primary user (PU) is considered. If the interference channels between the SUs and the PU are…

Information Theory · Computer Science 2017-05-22 Ahmed Ewaisha , Cihan Tepedelenlioğlu

This paper presents a game theoretic solution for end-to-end channel and power allocation in multihop cognitive radio networks analyzed under the physical interference model. The objective is to find a distributed solution that maximizes…

Networking and Internet Architecture · Computer Science 2025-01-28 Maria Canales , Jorge Ortin , Jose Ramon Gallego

This paper examines resilient dynamic leader-follower consensus within multi-agent systems, where agents share first-order or second-order dynamics. The aim is to develop distributed protocols enabling nonfaulty/normal followers to…

Multiagent Systems · Computer Science 2025-11-25 Liwei Yuan , Hideaki Ishii

This paper introduces a new channel selection strategy for reliable contentionaware data dissemination in multi-hop cognitive radio network. The key challenge here is to select channels providing a good tradeoff between connectivity and…

Networking and Internet Architecture · Computer Science 2010-07-02 Mubashir Husain Rehmani , Aline Carneiro Viana , Hicham Khalife , Serge Fdida

We investigate a cognitive radio system with two secondary users who can cooperate with the primary user in relaying its packets to the primary receiver. In addition to its own queue, each secondary user has a queue to keep the primary…

Networking and Internet Architecture · Computer Science 2012-08-29 Ahmed El Shafie , Ahmed Sultan

This letter studies a time-slotted multiple-access system with a primary user (PU) and a secondary user (SU) sharing the same channel resource. We propose a novel secondary access protocol which alleviates sensing errors and detects the…

Networking and Internet Architecture · Computer Science 2016-11-01 Ahmed El Shafie

Large-scale neuromorphic architectures consist of computing tiles that communicate spikes using a shared interconnect. The communication patterns in such systems are inherently sparse, asynchronous, and localized due to the spiking nature…

Neural and Evolutionary Computing · Computer Science 2025-11-21 Phu Khanh Huynh , Francky Catthoor , Anup Das

Routing strategies under the aegis of dynamic traffic assignment have been proposed in the literature to optimize system performance. However, challenges have persisted in their deployment ability and effectiveness due to inherent strong…

Physics and Society · Physics 2021-02-02 Chaojie Wang , Srinivas Peeta , Jian Wang

In this paper, we study the relay selection problem in multi-user, multi-hop relay networks with the objective of minimizing the maximum outage probability across all users. When only one user is present, it is well known that the optimal…

Information Theory · Computer Science 2022-05-20 Shalanika Dayarathna , Rajitha Senanayake , Jamie Evans

Networks-on-chips (NoCs) have become the mainstream communication infrastructure for chip multiprocessors (CMPs) and many-core systems. The commonly used parallel applications and emerging machine learning-based applications involve a…

Networking and Internet Architecture · Computer Science 2021-08-03 Binayak Tiwari , Mei Yang , Yingtao Jiang , Xiaohang Wang