Title :
Effects of polarization, antenna directivity, and room size on delay spread in LOS indoor radio channel
Author :
Kajiwara, Akihiro
Author_Institution :
Third Res. Center, Japan Defense Agency, Tokyo, Japan
fDate :
2/1/1997 12:00:00 AM
Abstract :
This paper presents results of experiment and computer simulation based on a three-dimensional (3-D) ray-tracing method for various directional polarized antennas, where the effects of polarization, antenna directivity, and room size on delay spread (measured at 94 GHz) are investigated in the line-of-sight (LOS) indoor channel. These results indicate that the delay spread can be reduced significantly by the directional circularly polarized antenna. It is also found that the delay spread increases almost proportionally with the square root of the room floor area
Keywords :
delays; digital simulation; directive antennas; electromagnetic wave polarisation; indoor radio; millimetre wave propagation; ray tracing; simulation; telecommunication channels; telecommunication computing; time measurement; 3D ray-tracing method; 94 GHz; EHF; LOS indoor radio channel; antenna directivity; circularly polarized antenna; computer simulation; delay spread; directional polarized antennas; experiment; line of sight indoor channel; polarization; room floor area; room size; square root; Antenna measurements; Bandwidth; Broadband antennas; Delay effects; Directive antennas; Indoor radio communication; Polarization; Predictive models; Ray tracing; Size measurement;
Journal_Title :
Vehicular Technology, IEEE Transactions on
