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Trellis Analysis of Transmission Burst Errors in Viterbi Decoding

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dc.creator Mrutu, Salehe
dc.creator Sam, Anael
dc.creator Mvungi, Nerey H.
dc.date 2016-02-17T12:52:47Z
dc.date 2016-02-17T12:52:47Z
dc.date 2014-08
dc.date.accessioned 2018-04-18T11:49:47Z
dc.date.available 2018-04-18T11:49:47Z
dc.identifier Salehe I. Mrutu, Anael Sam, Nerey H. Mvungi, I.J. Computer Science and Information Security, Vol. 12, No. 8, August 2014, 46-53
dc.identifier http://hdl.handle.net/123456789/432
dc.identifier.uri http://hdl.handle.net/123456789/10159
dc.description (IJCSIS) International Journal of Computer Science and Information Security, Vol. 12, No. 8, August 2014, http://sites.google.com/site/ijcsis/ISSN 1947-5500
dc.description The Viterbi decoder is the most favorable solution to the problem of decoding codewords from a convolutional encoder. Viterbi decoder performs exceptionally well when a received codewords block contains single or multiple and scattered errors in a received codewords block. However, the formation of burst errors in data transmission due to high transmission speed and the widely varying error conditions of wireless media in fading channel creates decoding challenge for such conditions which result in unbearable amount of residual errors. By using Viterbi decoders’ trellis diagrams, this paper analyses the effects of burst errors to the decoder that lead to residual errors and proposes improvement to the encoding and decoding procedures of the existing (2, 1, 2) binary convolutional encoder. The improved version facilitate effectiveness in the decoder (Viterbi algorithm) in decoding burst errors and hence reduction of residual errors in a poor channel. The proposed enhancements improve the decoder’s operational performance by 75 percent. However, the proposed modification reduces the encoder’s data transmission rate from 1/2 to 1/6.
dc.language en
dc.publisher International Journal of Computer Science and Information Security
dc.subject Locked Convolutional encoder
dc.subject Bust errors
dc.subject Residual errors
dc.subject Non Transmittable Codewords (NTCs)
dc.subject Viterbi Algorithm Decoding
dc.title Trellis Analysis of Transmission Burst Errors in Viterbi Decoding
dc.type Journal Article, Peer Reviewed


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