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Performance of Soft Viterbi Decoder enhanced with Non-Transmittable Codewords for storage media

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dc.contributor.author Hassan, Kilavo
dc.contributor.author Kisangiri, Michael
dc.contributor.author Mrutu, Salehe I.
dc.date.accessioned 2019-10-09T09:25:07Z
dc.date.available 2019-10-09T09:25:07Z
dc.date.issued 2018-01-12
dc.identifier.uri https://doi.org/10.1080/23311916.2018.1426538
dc.identifier.uri http://dspace.nm-aist.ac.tz/handle/123456789/472
dc.description Research Article published by Cogent Engineering en_US
dc.description.abstract The introduction of Non-Transmittable Codewords (NTCs) into Viterbi Algorithm Decoder has emerged as one of the best ways of improving performance of the Viterbi Algorithm Decoder. However, the performance has been tested only in hard decision Viterbi Decoder in telecommunication systems, but not in soft decision Viterbi Decoder and storage media. Most storage media use Reed Solomon (RS) Algorithm Decoder. Yet, the field experience still shows failure of the algorithm in correcting burst errors in reading data from the storage media; leading into data loss. This paper introduces the Soft Viterbi Algorithm Decoding enhanced with Non- Transmittable Codewords for storage media. Matlab software was used to simulate the algorithm and the performance was measured by comparing residual errors in a data length of one million bits. Additive White Gaussian Noise model was applied to distort the stored data. The performance comparison was made against the Reed Solomon code, Normal Soft Viterbi and Hard decision Viterbi enhanced with NTCs. The results showed that the Soft Viterbi Algorithm enhanced with NTCs performed remarkably better by 88.98% against RS, 84.31% against Normal Soft Viterbi and 67.26% against Hard Viterbi enhanced with NTCs. en_US
dc.language.iso en en_US
dc.publisher Cogent Engineering en_US
dc.subject SVAD-NTCs en_US
dc.subject soft and hard Viterbi en_US
dc.subject Reed Solomon en_US
dc.subject storage media en_US
dc.title Performance of Soft Viterbi Decoder enhanced with Non-Transmittable Codewords for storage media en_US
dc.type Article en_US


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