Title :
Propagation data statistics for digital radio systems design
Author :
da Silva Mello, L.A.R. ; Dhein, N.R. ; Einloft, C.M.
Author_Institution :
CETUC Pontificia Univ., Catolica do Rio de Janeiro, Brazil
Abstract :
Describes results obtained in a propagation measurements program currently being carried out in Brazil. The experiments objective is to obtain statistics of propagation data relevant to terrestrial digital radio systems design. The results are being used in the planning of 144 Mbit/s, 16 QAM and 64 QAM digital radio relay networks by the Brazilian Administration. The multipath fading occurrence factor and two-ray model parameters, namely the maximum fading depth and the relative delay between rays, are being continuously measured and recorded in ten line-of-sight analog radio links of Brazilian Communications Network. A set-up based on the Taylor and Shafi (1983) method has been selected due to its simplicity, since the measurements program intends to cover several different climatic zones in Brazil
Keywords :
digital communication systems; radio links; radiowave propagation; 144 Mbit/s; 16 QAM; 64 QAM; Brazil; digital radio relay networks; digital radio systems design; maximum fading depth; multipath fading; propagation data statistics; propagation measurements; relative delay; two-ray model parameters;
Conference_Titel :
Antennas and Propagation, 1989. ICAP 89., Sixth International Conference on (Conf. Publ. No.301)
Conference_Location :
Coventry
