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Minimum \(k\)-broadcast graphs. (English) Zbl 0807.94030

Summary: We study here a variant of broadcasting called \(k\)-broadcast, where a processor can call several of its neighbours in one time unit. A \(k\)- broadcast graph is an \(n\)-vertex communication network that supports a broadcast from any one vertex to all other vertices in optimal time \(\lceil \log_{k + 1} n \rceil\). A minimum \(k\)-broadcast graph is a \(k\)- broadcast graph having the minimum number of edges. In this paper, after giving simple results generalizing previously known results on 1- broadcasting, we find minimum \(k\)-broadcast graphs for \(k + 3 \leq n \leq 2k + 3\).

MSC:

94C15 Applications of graph theory to circuits and networks
90B18 Communication networks in operations research
05C90 Applications of graph theory
Full Text: DOI

References:

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