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Сравнительный анализ методов OFDM и N-OFDM

бакалаврская работа

Сравнительный анализ методов OFDM и N-OFDM

Abstract

Ð¢ÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ñ OFDM (Orthogonal frequency-division multiplexing) - мультиплексирование с ортогональным частотным разделением каналов получила распространение в ÑÑ‚Ð°Ð½Ð´Ð°Ñ€Ñ‚Ð°Ñ WiFi, WiMAX, четвертом поколении сотовой связи (стандарт LTE), ÑÐ¸ÑÑ‚ÐµÐ¼Ð°Ñ Ñ†Ð¸Ñ„Ñ€Ð¾Ð²Ð¾Ð³Ð¾ телевидения. Рассматриваемый в работе метод OFDM обеспечивает высокие скорости передачи Ð´Ð°Ð½Ð½Ñ‹Ñ Ð¸ Ð¿Ð¾Ð¼ÐµÑ Ð¾ÑƒÑÑ‚Ð¾Ð¹Ñ‡Ð¸Ð²Ð¾ÑÑ‚ÑŒ, связанную с многолучевым Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð¾Ð¼ распространения сигналов. Дальнейшим развитием Ñ‚ÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ OFDM следует признать неортогональный метод частотной дискретной модуляции - N-OFDM. Ð’ нем частотный разнос сигналов может быть меньше релеевского предела разрешения (1/T). Предлагаемая методика имеет возросшую сложность демодуляции, но более высокую спектральную эффективность, что обеспечивает электромагнитную совместимость множества терминалов и ряд Ð´Ñ€ÑƒÐ³Ð¸Ñ Ð¿Ñ€ÐµÐ¸Ð¼ÑƒÑ‰ÐµÑÑ‚Ð².

Keywords

N-OFDM, мультиплексирование с ортогональным частотным разделением каналов, мультиплексирование с неортогональным частотным разделением каналов, OFDM

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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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