Some contributions to asymmetric error control codes Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/8049g795b

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  • In some practical systems, most of the errors are of 1 → 0 type and 0 → 1 errors occur very rarely. In this thesis, first, the capacity of the asymmetric channel is derived. The capacity of the binary symmetric channel (BSC) and the Z-channel can be derived from this expression as special cases. Second, the error detecting capability of Bose-Lin codes beyond the maximum designed error detection capability are described. Third, a new class of a systematic t-unidirectional error detecting codes over Z [subscript m], m≥2 is designed. These codes can detect 2 errors using r=2 check bits and up to m[superscript (r-2)] + r-2 errors using r>2 check bits. Some upper bound on the maximum number of detectable errors when using r check bits are given. Finally, some analysis on the data throughput when using the following protocols over the m-ary Z-Channel, m≥2 are derived: (1) ARQ protocols using t-Asymmetric Error Detecting (t-AED) codes. (2) ARQ protocols using All Asymmetric Error Detecting (AAED) codes. (3) Type-I Hybrid ARQ protocols using t-Asymmetric Error Correcting and All Asymmetric Error Detecting (t-EC/AAED) codes. (4) ARQ Protocols with diversity combining using t-Asymmetric Error Correcting and All Asymmetric Error Detecting (t-EC/AAED) codes. Finally, some open research problems are described.
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  • description.provenance : Submitted by Kirsten Clark (clarkkir@onid.orst.edu) on 2012-04-18T19:16:42Z No. of bitstreams: 1 ElmougySamir2005.pdf: 714212 bytes, checksum: ce0b01204df7be4b128b9e85d49aef79 (MD5)
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-04-24T18:33:20Z (GMT) No. of bitstreams: 1 ElmougySamir2005.pdf: 714212 bytes, checksum: ce0b01204df7be4b128b9e85d49aef79 (MD5)
  • description.provenance : Made available in DSpace on 2012-04-24T18:39:54Z (GMT). No. of bitstreams: 1 ElmougySamir2005.pdf: 714212 bytes, checksum: ce0b01204df7be4b128b9e85d49aef79 (MD5) Previous issue date: 2005-04-28

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