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Equidistant Linear Network Codes with maximal Error-protection from Veronese Varieties (1207.2083v2)

Published 9 Jul 2012 in cs.IT and math.IT

Abstract: Linear network coding transmits information in terms of a basis of a vector space and the information is received as a basis of a possible altered vectorspace. Ralf Koetter and Frank R. Kschischang in Coding for errors and erasures in random network coding (IEEE Transactions on Information Theory, vol.54, no.8, pp. 3579-3591,2008) introduced a metric on the set af vector-spaces and showed that a minimal distance decoder for this metric achieves correct decoding if the dimension of the intersection of the transmitted and received vector-space is sufficiently large. From the Veronese varieties we construct explicit families of vector-spaces of constant dimension where any pair of distinct vector-spaces are equidistant in the above metric. The parameters of the resulting linear network codes which have maximal error-protection are determined.

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