Results 11 to 20 of about 4,358,974 (238)

Cognitive Radio and Coexistence for Multicasting Communication Systems [PDF]

open access: yes, 2010
This thesis focuses on the performance of terrestrial communication systems that use channel assignment schemes to allocate base stations in a scenario that implements the coexistence of mixed terrestrial communication systems based on cognitive radio ...
Yang, Mengfei
core   +6 more sources

Channel assignment and routing in cooperative and competitive wireless mesh networks [PDF]

open access: yes, 2012
This thesis was submitted for the degree of Docter of Philosophy and awarded by Brunel University.In this thesis, the channel assignment and routing problems have been investigated for both cooperative and competitive Wireless Mesh networks (WMNs).
Shah, Ibrar Ali
core   +7 more sources

Adaptive Antenna Array Assisted Dynamic Channel Allocation Techniques [PDF]

open access: yes, 2001
—The performance of base station adaptive antenna arrays (AAAs) is investigated in conjunction with fixed channel allocation (FCA) and dynamic channel allocation (DCA) schemes.
Blogh, J.S., Cherriman, P.J., Hanzo, L.
core   +2 more sources

A genetic-inspired joint multicast routing and channel assignment algorithm in wireless mesh networks [PDF]

open access: yes, 2008
Copyright @ 2008 IEEEThis paper proposes a genetic algorithm (GA) based optimization approach to search a minimum-interference multicast tree which satis¯es the end-to-end delay constraint and optimizes the usage of the scarce radio network resource in ...
Yang, S, Cheng, H
core   +6 more sources

Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network

open access: yesApplied Sciences, 2023
To improve the quality of service (QoS) on the internet of medical things, a cognitive radio (CR) protocol based on orthogonal frequency division multiple access (OFDMA) is proposed, named CR-OFDMA.
Suoping Li   +4 more
doaj   +1 more source

ATARI: A Graph Convolutional Neural Network Approach for Performance Prediction in Next-Generation WLANs

open access: yesSensors, 2021
IEEE 802.11 (Wi-Fi) is one of the technologies that provides high performance with a high density of connected devices to support emerging demanding services, such as virtual and augmented reality.
Paola Soto   +9 more
doaj   +1 more source

A Fair Multi-Channel Assignment Algorithm With Practical Implementation in Distributed Cognitive Radio Networks

open access: yesIEEE Access, 2018
Designing an efficient spectrum assignment (SA) mechanism is a key issue for realizing dynamic spectrum access in cognitive radio network. In multi-channel selection based SA schemes, secondary users (SUs) are able to utilize multiple channels ...
Zong-Heng Wei, Bin-Jie Hu
doaj   +1 more source

Comparative performance analysis of subcarrier assignment for real‐time video traffic

open access: yesIET Networks, 2015
The ability to transmit video and carry real‐time multimedia applications such as video‐streaming, video conferencing and mobile TV are considered important to support the viability and survivability of next generation mobile wireless networks. High peak
J. Benita, R. Jayaparvathy
doaj   +1 more source

Experimental Investigation of Gain Offset Behavior of Feedforward-Controlled WDM AGC EDFA Under Various Dynamic Wavelength Allocations

open access: yesIEEE Photonics Journal, 2016
Realizing dynamics in the optical layer is becoming more important for efficient optical communication networks such as protection switching in the optical domain or reconfiguring the optical layer to meet traffic fluctuations.
Kiyo Ishii, Junya Kurumida, Shu Namiki
doaj   +1 more source

Dynamic Subchannel Assignment-Based Cross-Layer MAC and Network Protocol for Multihop Ad Hoc Networks

open access: yesJournal of Computer Networks and Communications, 2013
The paper presents a dynamic subchannel assignment algorithm based on orthogonal frequency division multiple access technology operating in the time division duplexing and a new cross-layer design based on a proposed routing protocol jointed with the MAC
Khanh Nguyen Quang   +2 more
doaj   +1 more source

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