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dc.contributor.advisorNarayanan, Krishna
dc.creatorSoma, Dileep Kumar
dc.date.accessioned2019-01-23T19:47:36Z
dc.date.created2018-12
dc.date.issued2018-09-11
dc.date.submittedDecember 2018
dc.identifier.urihttp://hdl.handle.net/1969.1/174432
dc.description.abstractA concatenated soft decision forward error correcting (FEC) coding scheme with an inner low density generator matrix (LDGM) code and an outer product code (PC) is considered for applications in high-speed optical communications. First, we evaluate the performance of various choices of inner and outer codes when the inner decoder uses a soft-decision decoder and the outer decoder is a hard-decision error-only decoder. Then, we evaluate the performance of the concatenated coding scheme when erasures are introduced at the output of the inner decoder and the outer decoder is an errors-and-erasures decoder. An exact expression for the number of errors and erasures that are guaranteed to be decoded by an iterative decoder is derived. Then, an approach for deriving an approximation of the error probability for the erasures decoder is proposed. Using this approach, optimal thresholds can be chosen for declaring erasures at the output of the inner decoder. It is shown that the codeword error rate for the error and erasures iterative decoder can be better than that of errors only iterative decoder in the error floor region. It is also shown that simulation results are in close agreement with the mathematical approximations developed at error floors.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.subjectConcatenated codesen
dc.subjectOTNen
dc.subjectproduct codesen
dc.subjectLDGMen
dc.subjectbounding distance for product codesen
dc.subjectFECen
dc.titleErasure Based Soft Decision Decoding for Optical Transport Networksen
dc.typeThesisen
thesis.degree.departmentElectrical and Computer Engineeringen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorTexas A & M Universityen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelMastersen
dc.contributor.committeeMemberChoi, Seong
dc.contributor.committeeMemberSprinston, Alexander
dc.contributor.committeeMemberJiang, Anxiao
dc.type.materialtexten
dc.date.updated2019-01-23T19:47:37Z
local.embargo.terms2020-12-01
local.embargo.lift2020-12-01
local.etdauthor.orcid0000-0001-5700-0616


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