Rician fading

Rician fading or Ricean fading is a stochastic model for radio propagation anomaly caused by partial cancellation of a radio signal by itself — the signal arrives at the receiver by several different paths (hence exhibiting multipath interference), and at least one of the paths is changing (lengthening or shortening).

A Rician fading channel can be described by two parameters.

, is the total power from both paths, and acts as a scaling factor to the distribution: The received signal amplitude (not the received signal power)

is then Rice distributed with the following parameters:[3] The resulting Probability density function is: where

is the 0th order modified Bessel function of the first kind.