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Локальные и корпоративные сети
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ENERGY-LATENCY TRADE-OFFS IN REAL-TIME WIRELESS SENSOR NETWORKS. Utilizing Optimal Control to Enhance the Energy Efficiency of Wireless Sensor Networks

Формат:      Страниц 140
     мягкая обложка
Автор:
Lei M.    
Издательство:
Книга по Требованию    
Год:2009
Цена:
2416 руб
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Our results do not rely on the exact form of the cost function and can be readily applied to other settings as long as the cost function satisfies certain conditions. We study the optimal control of a class of resource allocation problems characterized by energy-latency trade-offs in Wireless Sensor Networks (WSN) using the framework of Discrete Event Systems. Using advanced techniques, such as sample path analysis and Receding Horizon Control, we address both off-line and on-line scenarios and have found better and more efficient solutions than the existing ones in the literature. Our work is based on the observation that energy of wireless nodes can be greatly saved by introducing some delay of task completion time. This work is beneficial to students, scholars, and engineers who are interested in utilizing advanced control and optimization techniques to solve resource allocation problems in wireless networks. Specifically, we consider a family of problems motivated by WSN such as Dynamic Transmission Control and Dynamic Voltage Scaling, where the objective is to minimize energy consumption while satisfying real-time operating constraints.
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Laba и ее партнеры купили команду за $7 миллионов в 1976 году, поскольку, помимо прочего, бейсбол и другие игровые виды спорта является полезным инструментом при продаже пива. Но в 2000 году, когда стоимость бейсбольных команд достигла сотен миллионов долларов, Laba , которая к тому времени объединилась с бельгийской I erbrew, решила, что настал подходящий момент для продажи контрольного пакета команды. Она продала Blue Jays компании Rogers Commu ica io s за $112 миллионов, получив прибыль в 1,600 процентов. Laba оставила за собой пакет в 20 процентов и маркетинговые права. Они включают право продавать пиво на домашнем стадионе и титул спонсора трансляции игр. A & прошла через болезненный пересмотр ее беспроводного бизнеса. Несмотря на первоначальною убежденность многих в компании, что имеется важная синергия между A & Wireless и остальной A & , оказалось, что на самом деле, Wireless вполне может быть отделена. Она не была слишком тесно связана с остальными частями компании, такими как дальняя связь или обслуживание бизнеса. Более того, оказалось, что клиенты вовсе не ценят возможность получать все свои телекоммуникационные услуги, проводные и беспроводные, от одного провайдера, как предполагала компания.


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