Estimation of Gilbert´s and Fritchman´s models parameters using the gradient method for digital mobile radio channels

A series of error sequence measurements in a typical mobile radio channel has been conducted to study the time distribution of transmission errors. E.N. Gilbert´s (1960) and B.D. Fritchman´s (1967) digital communication channel models are shown to describe adequately the observed error bursts occurring in the mobile radio channel. An estimation method based on the gradient algorithm is proposed for computing the parameters values of both models from the experimentally derived error distributions. A digital mobile radio channel simulator based on Gilbert´s and Fritchman´s models with the parameter values as estimated using the gradient technique is presented.<>