BER degradations caused by switching in digital mobile radio systems using base station diversity.
01 January 1984
The degradation is caused by the discontinuities of the signal received by the mobile when transmission is switched from one base station to another. To evaluate this effect, a simple statistical model has been devised for the spatial variations of shadow fading. It consists of a one-parameter spatial autocorrelation function for the (gaussian) dB value of the fading loss, which can be easily simulated. The single parameter is a "correlation length," which can be varied to emulate different fading conditions in the urban environment. The shape of the autocorrelation function can similarly be varied.