Title :
LMDS radio channel obstructed by foliage
Author :
Kajiwara, Akihiro
Author_Institution :
Dept. of Media & Telecomm. Eng., Ibaraki Univ., Hitachi, Japan
Abstract :
This paper investigates an obstructed radio channel by foliage for LMDS (local multipoint distribution services) where a relative evaluation of attenuation characteristics of foliage at 29.5 and 5 GHz is performed. Results show that the attenuation in dB should be treated statistically as Rician distribution. It is also found that swaying foliage in wind causes a significant channel fading at 29.5 GHz, ranging over 10 dB, while the fading depth at 5 GHz is approximately 2 dB
Keywords :
attenuation measurement; electromagnetic wave absorption; microwave links; microwave propagation; 29.5 GHz; 5 GHz; LMDS radio channel; Rician distribution; SHF; attenuation characteristics; channel fading; fading depth; foliage obstructed channel; local multipoint distribution services; obstructed radio channel; swaying foliage; wind; Attenuation measurement; Directional antennas; Fading; Intrusion detection; Performance evaluation; Radio broadcasting; Receiving antennas; Rician channels; Switches; Telecommunications;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853762
