Equivalent irreducible Goppa codes (Corresp.)
Chin-Long Chen · IEEE Transactions on Information Theory · 1978
Irreducible Goppa codes extended with an overall parity check are shown to be cyclic or shortened cyclic codes. The location points of a codeword of the extended irreducible codes can be designated as the points of a finite projective geometry. Bounds on the number of equivalence classes of both irreducible and extended irreducible Goppa codes are derived.