Stochastic Prediction of Transmission Performance in Mobile Communication Systems Employing Anti-Multipath Techniques in Urban Propagation Environments

摘要

This paper describes a method of predicting transmission performance to be obtained by applying RAKE re- ception and parallel transmission in realistic urban multipath environments. Delay profiles measured in metropolitan Tokyo at microwave frequencies were used to obtain the impulse re- sponses of radio channels, and the closed-form equations corre- sponding to the performance of these anti-multipath techniques were derived, by means of the characteristic function method, un- der the assumption that the phases of the impulse responses are uniformly distributed. Results show that RAKE reception pro- vides bit error rates 100 times lower than bare transmission does, whereas the improvement obtained by using parallel transmission should be especially valuable in broadband communication sys- tems, such as those operating at data rates above 10Mb/s.