presentation about theory and physics behind long range wireless data equipment
TRANSCRIPT
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FDD, TDMA, WDS: вотэто всё НЕМНОГОСКУЧНОЙТЕОРИИ
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Конвергентные сети
, -Аудио видеоконференцсвя
зь
СКУД
Мультимедийныеинсталляции
Wi-Fi, BYOD
Управлениеинфраструктуро
й
IP- ,телефонияcall-центры
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Два способа организации
доступа к среде передачи С централизованным управлением С децентрализованным управлением
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:: Централизованное управление маркеры
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:: Децентрализованное управление CSMA
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CarrierSenseMultipleAccess
CollisionDetection
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Проблемы CSMA
“Скрытые” узлы Задержка распространения
сигнала
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(c) home-computer-service.ru
Wireless Distribution Systems
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Frequency Division Duplex
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ЗоныФренеля
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ЗоныФренеля
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Time Division Duplex
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FDD против TDD
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Частотные диапазоны
, «Сантиметровый Wi-Fi», диапазон 5-6 Ггц
Миллиметровый диапазон 60-90 Ггц
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