The depolarization effects of Earth-Space link at MMW Bands
The depolarization effects of Earth-Space link at MMW Bands and their mechanisms are analysed. The models to evaluate XPD induced by clear atmosphere, rain, ice crystals, snow, sand-dust storm and ionized layer are summarized and analysed. The methods to calculate total XPD including the influence of transmitting antenna are discussed. The results given in this paper are important for frequency resue and depolarization MIMO techniques.
Radio Wave Propagation for Telecommunication Applications
to the Propagation of Radio Waves.- The Earth's Atmosphere.- Electromagnetic Waves and Propagation Characteristics.- Ionospheric Links.- Terrestrial Fixed Links.- Satellite Links.- Mobile Radio Links.
Space-diversity engineering
Vertically separated antennas are recommended to increase the transmission availability of line-of-sight microwave links by reducing the duration and frequency of multipath fading events. The emphasis is on application to the 4- and 6-GHz bands on links with negligible ground reflections. Necessary signal processing, links utilizing passive repeaters (reflectors), and overwater links are also treated. Some new experimental data are presented.