Cisco Wireless Networking http://www.wireless-center.net/rss/rss.php en-us Copyright 2013, rifat.sanac@hostticaret.net rifat.sanac@hostticaret.net Cisco Wireless Networking http://www.wireless-center.net/rss/rss.php Collection hourly 4 1901-01-01T00:00+00:00 Bouncing http://www.wireless-center.net/Cisco-Wireless-Networking/755.html EM waves can pass through some objects, and can also be reflected off of objects. In many cases, part of the signal’s energy attempts to penetrate the object, while the rest of the energy of the signal is reflected. (Imagine looking into a pool of water—some of the light passes ... en-us Bouncing http://www.wireless-center.net/rss/article_view.php?articleId=755 Copyright 2013, 2006-12-10T00:00:00+03:00 text Attenuation http://www.wireless-center.net/Cisco-Wireless-Networking/754.html Anyone who has tried to listen to a radio while driving in rural areas knows that signals get weaker the farther you get from the source.This weakening of a signal is known as attenuation.There are several factors that cause attenuation, but to see how distance alone can cause attenuation first ... en-us Attenuation http://www.wireless-center.net/rss/article_view.php?articleId=754 Copyright 2013, 2006-12-10T00:00:00+03:00 text Understanding Signal Power and S/N Ratio http://www.wireless-center.net/Cisco-Wireless-Networking/753.html One of the principle requirements for wireless communication is that the transmitted EM wave must reach the receiver with ample power to allow the receiver to distinguish the wave from the background noise. An analogy can be made to human hearing: when someone is talking to you, they must talk ... en-us Understanding Signal Power and S/N Ratio http://www.wireless-center.net/rss/article_view.php?articleId=753 Copyright 2013, 2006-12-10T00:00:00+03:00 text Propagating a Strong Radio Signal http://www.wireless-center.net/Cisco-Wireless-Networking/752.html In order for wireless communications to function, the signal must have a path from the transmitter and the receiver and arrive with enough power left in the signal for the receiver to comprehend what is being sent.There are many factors that affect how a signal propagates from the transmitter to ... en-us Propagating a Strong Radio Signal http://www.wireless-center.net/rss/article_view.php?articleId=752 Copyright 2013, 2006-12-10T00:00:00+03:00 text Anatomy of a Waveform http://www.wireless-center.net/Cisco-Wireless-Networking/751.html Radios transmit and receive signals over vast distances in the form of EM waves, at a particular frequency level that differentiates them from other EM waves in the frequency spectrum, such as infrared (IR) or X-rays (discussed later in this chapter). The sinusoidal waveform is the most common waveform and ... en-us Anatomy of a Waveform http://www.wireless-center.net/rss/article_view.php?articleId=751 Copyright 2013, 2006-12-10T00:00:00+03:00 text