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Standardization of Propagation Models 800 MHz to 100 GHz -- A Historical Perspective

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Document pages: 19 pages

Abstract: Propagation models constitute a fundamental building block of wirelesscommunications research. Before we build and operate real systems, we mustunderstand the science of radio propagation, and develop channel models thatboth reflect the important propagation processes and allow a fair comparison ofdifferent systems. In the past five decades, wireless systems have gone throughfive generations, from supporting voice applications to enhanced mobilebroadband. To meet the ever increasing data rate demands of wireless systems,frequency bands covering a wide range from 800 MHz to 100 GHz have beenallocated for use. The standardization of these systems started in theearly mid 1980 s in Europe by the European Telecommunications StandardsInstitute with the advent of Global System for Mobile Communications. Thismotivated the development of the first standardized propagation model by theEuropean Cooperation in Science and Technology (COST) 207 working group. Thesestandardization activities were continued and expanded for the third, fourth,and fifth generations of COST, as well as by the Third Generation PartnershipProject, and the International Telecommunication Union. This paper presents ahistorical overview of the standardized propagation models covering first tofifth-generation systems. In particular, we discuss the evolution andstandardization of pathloss models, as well as large and small-scale fadingparameters for single antenna and multiple antenna systems. Furthermore, wepresent insights into the progress of deterministic modelling across the fivegenerations of systems, as well as discuss more advanced modelling componentsneeded for the detailed simulations of millimeter-wave channels. Acomprehensive bibliography at the end of the paper will aid the interestedreader to dig deeper.

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