
In wireless telecommunications, multipath is the propagation phenomenon that results in radio signals reaching the receiving antenna by two or more paths. Causes of multipath include atmospheric ducting, ionospheric reflection and refraction, and reflection from water bodies and terrestrial objects such as mountains and buildings. The effects of m...
Found on
http://en.wikipedia.org/wiki/Multipath_propagation

propagation between a transmission point and a reception point over a number of separate propagation paths simultaneously
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=705-02-36
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