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Performance of Multi-hop Ad-hoc Networks in Wireless Environments. A thesis submitted for the degree of M.Sc. in Telecommunication Engineering

Автор:   Mohammad A.
мягкая обложка
176 страниц
2010 год
Издательство:   Книга по Требованию
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2623 руб
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Описание:We will test the proposed multi-hop system with narrowband, code division multiple access (CDMA) and orthogonal frequency division multiplexing (OFDM). The aim is to investigate the error performance of uncoded and convolutionally coded multi-hop networks over different channel models in different network topologies. In addition, different forwarding techniques at the relay nodes will be considered. Multi-hop relaying is a promising technique for the next generation of wireless communications. In this thesis, we consider convolutional codes, which provide low implementation complexity and short delays. Multi-hop networks help to combat fading by employing a distributed space diversity system. In order to enhance the diversity gain, improve the error performance of the network, and reduce the power consumption, an error control code is usually employed in wireless networks. We will consider multi-hop networks with series, and parallel topologies.


Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка

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Brave New World Revisited

Conse]quences hardly less undesirable are likely to follow the general adoption of a Social Ethic, based upon the erroneous view that ours is a fully social species, that human infants are born uniform and that individuals are the product of conditioning by and within the col]lective environment. If these views were correct, if hu]man beings were in fact the members of a truly social species, and if their individual differences were trifling and could be completely ironed out by appropriate conditioning, then, obviously, there would be no need for liberty and the State would be justified in persecut]ing the heretics who demanded it. For the individual termite, service to the termitary is perfect freedom. But human beings are not completely social; they are only moderately gregarious. Their societies are not or]ganisms, like the hive or the anthill; they are organiza]tions, in other words ad hoc machines for collective living. Moreover, the differences between individuals are so great that, in spite of the most intensive cul]tural ironing, an extreme endomorph (to use W. H ...»

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