Propagation of radiowaves
Institution of Electrical Engineers, 2003 - Science - 460 pages
The field of radio communications continues to change rapidly and the second edition of this outstanding book, based on a popular IEE Vacation School, has been fully updated to reflect the latest developments. The introduction of new services and the proliferation of mobile communications have produced a growing need for wider bandwidths and the consequent need for frequency reuse. This book introduces the basic concepts and mechanisms of radiowave propagation engineering in both the troposphere and ionosphere, and includes greater emphasis on the needs of digital technologies and new kinds of radio systems. The content reflects the wide experience of an exceptional group of authors and the emphasis throughout is on modelling and prediction methods and the relevant ITU Radiocommunication sector recommendations. Propagation of Radiowaves, 2nd Edition is essential reading for professionals involved in planning, designing and operating radio systems.
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Basic principles 1 l
Basic principles 2
Propagation data requirements for radiocommunications
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absorption amplitude antenna height approximation atmosphere band bandwidth base station calculation CDMA cent channel component decibels diffraction dipole distance distribution diversity DS-CDMA duct earth effective earth radius effects electric field electron density elevation angle environment error F2 layer factor fade depth field strength free space free-space free-space loss frequency Fresnel geomagnetic geometry given ground horizontal hydrometeor increase interference ionisation ionosphere ITU-R Recommendation latitudes line-of-sight log-normal distribution magnetic measurements microcells mode multipath noise parameters path length path loss path loss exponent percentage phase phasor plane polarisation prediction methods propagation models radiation radio propagation radio systems range ratio ray tracing Rayleigh Rayleigh distribution Recommendation ITU-R reflection coefficient refractive index region satellite scatter scintillation Section shown in Figure solar statistics surface techniques terrain thermosphere tion transmission loss transmitter troposphere typical variations vertical wave wavelength