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Цифровые системы передач

учебное пособие

Цифровые системы передач

Abstract

В учебном пособии рассмотрены вопросы подготовки и передачи информации цифровой системой передач, прием сигналов с помощью согласованной фильтрации и детектирования. Рассмотрены характеристики цифровых кодов NRZ, RZ, Манчестер II, вопросы синхронизации кодов. Интегральные оценки качества ЦСП: мера количества информации, энтропия сообщений, избыточность и производительность дискретного источника сообщений (ДИС). Теоремы согласования ДИС и канала связи. Методы Хаффмана и Шеннона – Фано. Даны классификации помехоустойчивых кодов, создание линейных блочных кодов порождающей матрицей и синдромное декодирование. Алгоритм Хэмминга. Понятие циклических кодов, кодирование кодами CRC и декодирование.

Keywords

Электрические сигналы, Энтропия, Информация, Кодирование Ð¿Ð¾Ð¼ÐµÑ Ð¾ÑƒÑÑ‚Ð¾Ð¹Ñ‡Ð¸Ð²Ð¾Ðµ, Коды циклические

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citations
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!
0
Average
Average
Average
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