900 MHz propagation measurement results and three-dimensional path loss prediction models for a number of typical indoor cellular system environments are presented. Statistical expressions describing the observed excess path loss due to floor reflections and clutter, as well as the propaffation characteristics of multistory buildings, are discussed. Radio coverage and co-channel interference predictions for indoor cell planning are presented for a modern office building. Furthermore, simulations of an indoor system using adaptive channel allocation (ACA) have been performed.
This paper summarizes some of the antenna array work at Ericsson. The use of antenna arrays in a random frequency hopping GSM system is treated and receivedtransmitter structures are described. Results from simulations and propagation measurements are presented and compared with theoretical results.
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