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dc.rights.licenseRestricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.
dc.contributorModestino, James W.
dc.contributorCarlson, A. Bruce, 1937-
dc.contributorMilstein, Laurence B.
dc.contributorFlaherty, J. E., 1943-
dc.contributor.authorMui, Shou Y.
dc.date.accessioned2021-11-03T08:45:23Z
dc.date.available2021-11-03T08:45:23Z
dc.date.created2017-04-13T16:31:23Z
dc.date.issued1976-12
dc.identifier.urihttps://hdl.handle.net/20.500.13015/1898
dc.descriptionDecember 1976
dc.descriptionSchool of Engineering
dc.description.abstractA rather complete performance analysis of the uncoded system as well some diversity transmission systems is presented first. Fairly general performance bounds on Viterbi decoding for the case of zero-memory (fully interleaved) fading channels are then derived. Useful techniques for predicting code performance on a slow fading channel is demonstrated. The efficacy of simple block interleaving as a means of combatting channel memory is thoroughly explored. The performance of list-of-ℓ as well as uniform receiver quantization is investigated.
dc.description.abstractThe primary concern of this work has been with deep space communications. However, the analysis is quite general and the resultp are expected to be of much wider applications.
dc.description.abstractSeveral soft-decision decoding algorithms for block codes are considered. For comparable decoder complexity, short constraint length convolutional codes are shown to be superior to block codes and the difference in performance increases with fading severity.
dc.description.abstractThe impact of phase tracking errors on the overall system performance is examined. We consider phase tracking systems which employ the transmission of pilot tones as well as those which derive the phase estimate from the information-bearing signal. A hybrid phase tracker, which makes use of a low-energy pilot carrier to resolve the phase ambiguity of the reference phase recovered from the modulated signal, is shown to be an attractive scheme. The question of optimum allocation of power between the synchronization and the information signals is discussed
dc.description.abstractAn empirical correspondence between the Rician and the lognormal channel parameters is developed. It is shown that under this correspondence, the coded system performance is relatively insensitive to the underlying probability distribution of the fading provided that full interleaving is employed.
dc.description.abstractThe performance of short constraint length convolutional codes used in conjunction with the Viterbi algorithm on both the Rician and the lognormal fading channels is examined. The modulation strategies studied include coherent binary phase-shift keying (BPSK), differential phase-shift keying (DPSK), noncoherent binary and multipIe frequency-shift keying (BFSK and tWSK). The quantity of interest is the bit error probability performance as a function of the signal-to-noise ratio, Eb/N₀ parameterized by a few meaningful channel parameters. Extensive computer simulation is used to support and supplement the analysis.
dc.language.isoENG
dc.publisherRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofRensselaer Theses and Dissertations Online Collection
dc.subjectElectrical and systems engineering
dc.titleThe performance of convolutional codes on fading channels
dc.typeElectronic thesis
dc.typeThesis
dc.digitool.pid178029
dc.digitool.pid178030
dc.digitool.pid178031
dc.rights.holderThis electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
dc.description.degreePhD
dc.relation.departmentDept. of Electrical, Computer, and Systems Engineering


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