abstract: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 problemsmainly exhibit to bemulti-pathpropagationin thewirelessfadingchannel, signal fading caused by thescatteringand Inter-SymbolInterference caused by the long multi-pathtime delay.