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

Satoshi TAKAHASHI  Takehiko KOBAYASHI  Kouzou KAGE  Koichi TAKAHASHI  Hironari MASUI  

IEICE TRANSACTIONS on Communications   Vol.E82-B   No.12   pp.1987-1996
Publication Date: 1999/12/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Multimedia Mobile Communication Systems)
broadband mobile communication,  transmission performance,  multipath propagation,  characteristic function method,  RAKE reception,  parallel transmission,  

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This paper describes a method of predicting transmission performance to be obtained by applying RAKE reception and parallel transmission in realistic urban multipath environments. Delay profiles measured in metropolitan Tokyo at microwave frequencies were used to obtain the impulse responses of radio channels, and the closed-form equations corresponding to the performance of these anti-multipath techniques were derived, by means of the characteristic function method, under the assumption that the phases of the impulse responses are uniformly distributed. Results show that RAKE reception provides 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 systems, such as those operating at data rates above 10 Mb/s.