Giuliano Gadioli La Guardia

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In this paper, we construct new sequences of asymptotically good con-volutional codes. These sequences are obtained from sequences of transitive , self-orthogonal and self-dual block codes that attain the Tsfasman-Vladut-Zink bound. Furthermore, by applying the techniques of expanding , extending, puncturing, direct sum, the u|u + v construction and the(More)
In this paper we construct several new families of quantum codes with good and asymptotically good parameters. These new quantum codes are derived from (classical) algebraic geometry (AG) codes by applying the Calderbank-Shor-Steane (CSS) construction. Many of these codes have large minimum distances when compared with its code length and they have(More)
New properties of q-ary cyclotomic cosets modulo n = q m − 1, where q ≥ 3 is a prime power, are investigated in this paper. Based on these properties, the dimension as well as bounds for the designed distance of some families of classical cyclic codes can be computed. As an application, new families of nonbinary Calderbank-Shor-Steane (CSS) quantum codes as(More)
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