Lý thuyết mạng không dây P2

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Lý thuyết mạng không dây P2

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Wireless networks, as the name suggests, utilize wireless transmission for exchange of information. The exact form of wireless transmission can vary. For example, most people are accustomed to using remote control devices that employ infrared transmission. However, the dominant form of wireless transmission is radio-based transmission. Radio technology is not new, it has a history of over a century and its basic principles remain the same with those in its early stage of development. In order to explain wireless transmission, an explanation of electromagnetic wave propagation must be given. A great deal of theory accompanies the way in which electromagnetic...

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