Detecting Deletions and Insertions in Concatenated Strings with Optimal Redundancy

05/01/2021 ∙ by Serge Kas Hanna, et al. ∙ 0

We study codes that can detect the exact number of deletions and insertions in concatenated binary strings. We construct optimal codes for the case of detecting up to deletions. We prove the optimality of these codes by deriving a converse result which shows that the redundancy of our codes is asymptotically optimal in among all families of deletion detecting codes, and particularly optimal among all block-by-block decodable codes. For the case of insertions, we construct codes that can detect up to 2 insertions in each concatenated binary string.

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