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

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dc.creator Hassan, Kilavo
dc.creator Michael, Kisangiri
dc.creator Mrutu, Salehe I.
dc.date 2019-10-09T09:25:07Z
dc.date 2019-10-09T09:25:07Z
dc.date 2018-01-12
dc.date.accessioned 2022-10-25T09:15:48Z
dc.date.available 2022-10-25T09:15:48Z
dc.identifier https://doi.org/10.1080/23311916.2018.1426538
dc.identifier http://dspace.nm-aist.ac.tz/handle/123456789/472
dc.identifier.uri http://hdl.handle.net/123456789/94618
dc.description Research Article published by Cogent Engineering
dc.description 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.
dc.format application/pdf
dc.language en
dc.publisher Cogent Engineering
dc.subject SVAD-NTCs
dc.subject soft and hard Viterbi
dc.subject Reed Solomon
dc.subject storage media
dc.title Performance of Soft Viterbi Decoder enhanced with Non-Transmittable Codewords for storage media
dc.type Article


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