Title :
Temporal Variations Investigation over a Forested Channel in VHF and UHF hands
Author :
Meng, Yu Song ; Lee, Yee Hui
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
This paper presents a study of propagation through a typical coconut plantation for frequencies in the range of 40 MHz to 1400 MHz. Measurements of continuous-wave (CW) waveforms are used to construct the distribution functions for the fast fading characteristics of the channel. It is found to be Rician distributed. Analysis of the Rician K factor demonstrates that the received signal behavior is highly frequency dependent. Tree trunk is a major scatterer for trunk-level measurements and the canopy of the trees influences the propagation of lower frequency signals. Finally, level crossing rates and average fading duration results are presented.
Keywords :
Rician channels; UHF radio propagation; VHF radio propagation; electromagnetic wave scattering; waveform analysis; Rician distributed; UHF bands; VHF bands; average fading duration; coconut plantation; continuous-wave waveforms; distribution functions; fading channel; forested channel; frequency 40 MHz to 1400 MHz; level crossing rates; temporal variations investigation; tree trunk scattering; Antenna measurements; Antennas and propagation; Distribution functions; Fading; Frequency measurement; Frequency response; Rician channels; Scattering; Sea measurements; Signal analysis;
Conference_Titel :
Antennas, Propagation & EM Theory, 2006. ISAPE '06. 7th International Symposium on
Conference_Location :
Guilin
Print_ISBN :
1-4244-0162-3
Electronic_ISBN :
1-4244-0163-1
DOI :
10.1109/ISAPE.2006.353518
