Other Wireless Effects: Fading and Delay Spread
Fading is a natural phenomenon in wireless systems. As a signal propagates through free space, it experiences small zones of fading where the signal loses some of its power or gradually fades. The phenomenon is quite severe for multipath signals, because of the phase discrepancies in them as discussed previously. Fading in this case is called Raleigh fading and is inversely proportional to the fourth power of wavelength.
Another negative effect in wireless communication is delay spread, which is particularly pronounced in TDM systems. Consider, for instance, a user getting data in a particular slot. If the user is receiving data from two or three different antennas, he is bound to get two or three ...
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