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Correcting Two Deletions with More Reads | IEEE Conference Publication | IEEE Xplore

Correcting Two Deletions with More Reads


Abstract:

A two-deletion correcting code of length n is defined to be a set of binary words such that a codeword can be uniquely identified from any one of its length- (n-2) su...Show More

Abstract:

A two-deletion correcting code of length n is defined to be a set of binary words such that a codeword can be uniquely identified from any one of its length- (n-2) subsequence. A two-deletion correcting code requires at least 2\log n+O(1), while the best known explicit construction uses 4\log n+o(\log n) redundant bits. In this work, we study this coding problem in the framework of the sequence reconstruction problem and require the receiver to uniquely reconstruct a codeword from any N\geqslant 2 of its length- (n-2) subsequences. Specifically, we provide an explicit code construction that uniquely reconstructs a codeword from any five of its length-(n-2) subsequences, using only 2\log n+o(\log n) redundant bits.
Date of Conference: 12-20 July 2021
Date Added to IEEE Xplore: 01 September 2021
ISBN Information:
Conference Location: Melbourne, Australia

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