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00925njm 22002777a 4500 dc Galindo, Carlos author Geil, Olav author Hernando, Fernando author Ruano Benito, Diego author 2018 Two new constructions of linear nested code pairs are given for which the codimension and the relative minimum distances of the codes and their duals are good. By this we mean that for any two out of the three parameters the third parameter of the constructed code pair is large. Such pairs of nested codes are indispensable for the determination of good linear ramp secret sharing schemes. They can also be used to ensure reliable communication over asymmetric quantum channels. The new constructions result from carefully applying the Feng-Rao bounds to a family of codes defined from multivariate polynomials and Cartesian product point sets. IEEE Transactions on Information Theory. Volume 64, Issue 4, pages 2444-2459 (2018) http://uvadoc.uva.es/handle/10324/31722 Improved constructions of nested code pairs