The Analysis of BER Performance of Implicit Diversity in Frequency Selective Fading

The frequency selective fading in the troposcatter channel deforms the signal spectrum and may give rise to intersymbol interference, but if taking some measures, the effect of the diversity would be available by using the characteristic, that is implicit diversity. As yet, the performance of the implicit diversity has not been analytically measurable. In this paper, a model is built, and through the model, the analysis on the performance of the implicit diversity is made for the typical frequency correlation characteristics in the troposcatter channel. The calculation method is verified by computer simulation, and the result is substantially useful to guide the engineering design.