Introduction to Coding Theory
A class of linear codes with good parameters
IEEE Transactions on Information Theory
Symmetric Polynomials and Some Good Codes
Finite Fields and Their Applications
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We generalize the idea of constructing codes over a finite field Fqby evaluating a certain collection of polynomials at elements of an extension field of Fq. Our approach for extensions of arbitrary degrees is different from the method in [3]. We make use of a normal element and circular permutations to construct polynomials over the intermediate extension field between Fqand F$_{q^{t}}$denoted by F$_{q^{s}}$where s divides t. It turns out that many codes with the best parameters can be obtained by our construction and improve the parameters of Brouwer’s table [1]. Some codes we get are optimal by the Griesmer bound.