Column twisted Reed-Solomon codes are shown to be MDS under sufficient conditions, with Schur square dimension 2k implying they are not equivalent to Reed-Solomon codes, and support lengths up to (q+3)/2 for large odd prime power q.
On the classification of MDS codes,
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Column Twisted Reed-Solomon Codes as MDS Codes
Column twisted Reed-Solomon codes are shown to be MDS under sufficient conditions, with Schur square dimension 2k implying they are not equivalent to Reed-Solomon codes, and support lengths up to (q+3)/2 for large odd prime power q.