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Снижение вычислительной сложности приёма сигналов с управляемой МСИ путём использования Ð¿Ð¾Ð´Ð¾Ð¿Ñ‚Ð¸Ð¼Ð°Ð»ÑŒÐ½Ñ‹Ñ Ð°Ð»Ð³Ð¾Ñ€Ð¸Ñ‚Ð¼Ð¾Ð² демодуляции

выпускная квалификационная работа магистра
descriptionPublicationkeyboard_double_arrow_right Other literature type 01 Jan 2018 Russian Publisher:Санкт-Петербургский политехнический университет Петра Великого

doi: 10.18720/spbpu/2/v18-5686

Снижение вычислительной сложности приёма сигналов с управляемой МСИ путём использования Ð¿Ð¾Ð´Ð¾Ð¿Ñ‚Ð¸Ð¼Ð°Ð»ÑŒÐ½Ñ‹Ñ Ð°Ð»Ð³Ð¾Ñ€Ð¸Ñ‚Ð¼Ð¾Ð² демодуляции

Abstract

Работа посвящена обнаружению сигналов, с преднамеренно введенной межсимвольной интерференцией (МСИ). Ð’ качестве сигналов рассмотрены Faster-Than-Nyquiest (FTN) и оптимальные сигналы с частичным откликом. Ð’ качестве алгоритма обнаружения используется подоптимальная модификация алгоритма BCJR, называемая Max-Log-M-BCJR. Сигналы сравниваются по критерию спектральной эффективности и ÑÐ½ÐµÑ€Ð³ÐµÑ‚Ð¸Ñ‡ÐµÑÐºÐ¸Ñ Ð·Ð°Ñ‚Ñ€Ð°Ñ‚ при фиксированном значении вероятности битовой ошибки и для Ñ€Ð°Ð·Ð»Ð¸Ñ‡Ð½Ñ‹Ñ Ð·Ð½Ð°Ñ‡ÐµÐ½Ð¸Ð¹ сложности алгоритма обнаружения. Показано, что использование подоптимального алгоритма BCJR обеспечивает заметное снижение вычислительной сложности демодуляции.

Keywords

Электромагнитные волны, Радиосигналы, Математическое моделирование

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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