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Bounds on the expected optimal channel assignment in Rayleigh channels
2012 IEEE 13th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2012The channel assignment problem is highly important to OFDMA cognitive radio systems. Tight bounds on the optimal channel assignment are crucial for the performance evaluation of various channel assignment schemes. In this paper we derive the mean of the maximal sum rate channel assignment for i.i.d Rayleigh fading channels.
Oshri Naparstek, Amir Leshem
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Dynamic channel assignment with cumulative co-channel interference
ACM SIGMOBILE Mobile Computing and Communications Review, 2004This paper studies the problem of centralized dynamic channel assignment (DCA) in wireless cellular systems under space and time-varying channel demand. The objective is to minimize the number of channels required to satisfy demand while also satisfying co-channel interference constraints.
Karen Daniels +3 more
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Priority Channel Assignment in Tandem DSI
IEEE Transactions on Communications, 1980DSI (digital speech interpolation) is a technique for increasing the utilization of telephone transmission facilities by allocating transmission channels during intervals of active speech (talkspurts) only. The use of DSI for tandem connections, where DSI links are connected in cascade via circuit switching, poses a problem, however, since the voice ...
Mischa Schwartz +2 more
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Channel Assignment with Ant Colony Optimization
2020In wireless communication arise various forms of optimization problems including channel assignment problem. There are many possible ways to assign channels to wireless links and our goal is to find the assignment that minimizes channel interference. For that purpose we have developed an ant colony optimization algorithm based on general guidelines of ...
Marko Peras, Nikola Ivkovic
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Channel Assignment in Multimedia Cellular Networks
2007This paper deals with multimedia channel assignment in a hexagonal cellular network with two-band buffering. After deriving a lower bound on the minimum bandwidth for real-life situations, we present an algorithm for assigning channels using Genetic Algorithm (GA).
Goutam K. Audhya, Bhabani P. Sinha
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Graph labeling and radio channel assignment
Journal of Graph Theory, 1998Given a graph and a set of constraints the authors find labelings of minimum span. Vertices of highly structured graphs can represent radio transmitters, hence the focus is on the infinite triangular, square and line lattices. Previously accepted practice can lead to suboptimal channel assignments.
Jan van den Heuvel +2 more
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Parallel simulation of dynamic channel assignment
1997 IEEE 47th Vehicular Technology Conference. Technology in Motion, 2002Future mobile systems will require huge radio network densities. Consequently, frequency planning and network simulation may become a tedious problem due to the large number of events that must be simulated. In this paper, we analyze a dynamic channel assignment algorithm by using a parallel discrete event simulator.
Boichat, R. +4 more
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Frequency Channel Assignment on Planar Networks
2002For integers p ? q, a L(p, q)-labeling of a network G is an integer labeling of the nodes of G such that adjacent nodes receive integers which differ by at least p, and nodes at distance two receive labels which differ by at least q. The minimum number of labels required in such labeling is ?qp(G).
Michael Molloy 0001 +1 more
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An optimal channel pin assignment algorithm
1990 IEEE International Conference on Computer-Aided Design. Digest of Technical Papers, 2002A study is made of the channel pin assignment problem subject to both position and order constraints. The authors show that the problem is NP-hard in general and present a polynomial time optimal algorithm for an important case where the relative orderings of the terminals are completely fixed.
Yang Cai 0003, D. F. Wong 0001
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Proceedings of the 4th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks, 2009
This paper gives the comparison of different channel assignment heuristics proposed in the literature and introduces a new algorithm named MCAIR. Specifically, it compares, static, multi-radio multi-channel algorithms which are graph theory based and where a priori traffic characteristics are unknown.
Husnain Mansoor Ali +2 more
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This paper gives the comparison of different channel assignment heuristics proposed in the literature and introduces a new algorithm named MCAIR. Specifically, it compares, static, multi-radio multi-channel algorithms which are graph theory based and where a priori traffic characteristics are unknown.
Husnain Mansoor Ali +2 more
openaire +1 more source