Title :
Indoor ISM band multipath fading: frequency and antenna diversity
Author :
Colburn, J.S. ; Jensen, M.A. ; Rahmat-Samii, Y.
Author_Institution :
California Univ., Los Angeles, CA, USA
Abstract :
The frequency fading characterization of the indoor ISM (902-928 MHz) channel are presented. This includes plots of the frequency-dependence of the fading and calculations of the correlation bandwidth. Finally, the measured diversity performance of three novel dual antenna configurations proposed for an ISM band wireless transceiver handset are presented. The diversity performance of these antenna geometries is assessed by measuring the power correlation coefficient of the signal received over each of the two antennas located on the handset. To evaluate the functionality of the measuring apparatus used in these experiments, the correlations of the received signal from two dipole antennas with various separations are measured, for which theoretically computed and previously measured envelope correlation coefficient data is available. Considerable effort is also directed at extraction of the fast fading information from the observed signal level, and its effect is detailed
Keywords :
UHF radio propagation; antenna testing; correlation theory; diversity reception; fading channels; indoor radio; mobile antennas; multipath channels; 902 to 928 MHz; antenna diversity; antenna measurement; correlation bandwidth; dual antenna; frequency dependence; frequency diversity; indoor ISM band; multipath fading; performance; power correlation coefficient measurement; signal reception; wireless transceiver handset; Antenna measurements; Bandwidth; Dipole antennas; Fading; Frequency diversity; Geometry; Power measurement; Receiving antennas; Telephone sets; Transceivers;
Conference_Titel :
Antennas and Propagation for Wireless Communications, 1998. 1998 IEEE-APS Conference on
Conference_Location :
Waltham, MA
Print_ISBN :
0-7803-4955-5
DOI :
10.1109/APWC.1998.730626
