Results 21 to 30 of about 7,174,260 (287)

Maximum-Service Channel Assignment in Vehicular Radar-Communication

open access: yesIEEE Access, 2021
Spectrum sharing between different technologies has become a necessity as the RF spectrum has become more congested than ever due to the increasing number of connected devices and applications all wishing to access the spectrum simultaneously.
Mai Kafafy   +2 more
doaj   +1 more source

Interference Graph Based Channel Assignment Algorithm for D2D Cellular Networks

open access: yesIEEE Access, 2018
Device-to-device (D2D) communications underlying cellular networks are a novel approach for providing IoT services, in which D2D communication links and cellular communication links share the same channels.
Liqun Zhao   +2 more
doaj   +1 more source

Improved Bounds for Radio k-Chromatic Number of Hypercube Qn

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
A number of graph coloring problems have their roots in a communication problem known as the channel assignment problem. The channel assignment problem is the problem of assigning channels (nonnegative integers) to the stations in an optimal way such ...
Laxman Saha   +2 more
doaj   +1 more source

Tight Lower Bound for the Channel Assignment Problem [PDF]

open access: yesACM Transactions on Algorithms, 2014
We study the complexity of the C hannel A ssignment problem. An open problem asks whether C hannel A ssignment admits an O ( c n ) (times a polynomial in ...
openaire   +4 more sources

Design, analysis and evaluation of routing and channel assignment algorithms for wireless mesh networks [PDF]

open access: yes, 2011
In this thesis we describe the efforts we made for designing, developing and analyzing new routing and channel assignment algorithms for wireless mesh networks.
Di Stasi, Giovanni
core   +1 more source

Resource Allocation for Weighted Sum-Rate Maximization in Multi-User Full-Duplex Device-to-Device Communications: Approaches for Perfect and Statistical CSIs

open access: yesIEEE Access, 2017
In this paper, we investigate the resource allocation problem for multi-user full-duplex deviceto-device (D2D) underlay communication, considering both perfect channel state information (CSI) and statistical CSI scenarios.
Song Li   +3 more
doaj   +1 more source

Cyclic labellings with constraints at two distances [PDF]

open access: yes, 2004
Motivated by problems in radio channel assignment, we consider the vertex-labelling of graphs with non-negative integers. The objective is to minimise the span of the labelling, subject to constraints imposed at graph distances one and two.
Leese, R, Noble, S D
core   +3 more sources

A survey on the channel assignment problem in wireless networks

open access: yesWireless Communications and Mobile Computing, 2011
AbstractEfficient allocation of channels for wireless communication in different network scenarios has become an extremely important topic of recent research. The main challenge lies in the fact that the channel allocation problem is NP‐complete. Because of a maximum allowable time limit imposed in practical situations for allocation of channels ...
Goutam K. Audhya   +3 more
openaire   +1 more source

Efficient Resource Management for Sum Capacity Maximization in 5G NOMA Systems

open access: yesApplied System Innovation, 2019
The modern cellular technologies are expected to provide high data rates and massive connectivity in fifth generation (5G) systems; however, this may be impossible through traditional radio access techniques.
Azhar Ali   +5 more
doaj   +1 more source

On The Span Of A Random Channel Assignment Problem

open access: yesCombinatorica, 2007
In the radio channel assignment problems considered here, we must assign a ‘channel’ from the set 1,2,... of positive integers to each of n transmitters, and we wish to minimise the span of channels used, subject to the assignment leading to an acceptable level of interference. A standard form of this problem is the ‘constraint matrix’ model.
openaire   +3 more sources

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