On the performance of MSK signal transmission over a multipath channel with small time dispersion

In this paper, the performance of MSK signal transmission over a mobile radio channel with small time dispersion is analyzed. In contrast to existing investigations, we made no restrictive assumptions about the impulse response of the channel or the sampling time and derive analytical expressions for the error floor and the optimum sampling instant. We found that the error probability depends not only on the delay spread, but also on the squared mean delays of echoes that are advanced or delayed with respect to the sampling point and on the power balance between them. Furthermore, we show that in the general case, the optimum sampling instant is not identical to the mean delay. Comparison of our results with Monte Carlo simulations show very good agreement