A statistical ultra-wideband indoor channel model and the effects of antenna directivity on path loss and multipath propagation

被引：33
|
作者：
Dabin, JA [1 ]
Haimovich, AM [1 ]
Grebel, H [1 ]
机构：
[1] New Jersey Inst Technol, Dept Elect & Comp Engn, Newark, NJ 07102 USA
来源：
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2006年 / 24卷 / 04期
关键词：
directional antennas; multipath; path loss; propagation channel; root mean square (RMS) delay spread; ultra-wideband (UWB);
D O I：
10.1109/JSAC.2005.863824
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Ultra-wideband indoor line-of-sight frequency-domain channel measurements have been performed in the 2-6 GHz frequency band using three different transmit/receive antenna combination pairs. The effects of antenna directivity on path loss and multipath propagation in the channel are analyzed extensively for various omnidirectional and directional antenna combinations. A statistical model of the path loss in the channel is presented, in which all path loss exponents result in better than free space loss. The shadow fading experienced in the channel is shown to highly agree with the normal probability assumption. There is a significant reduction in root mean square delay spread when directional antennas are used at the transmitter and receiver or solely at the receiver with respect to an omnidirectional/omnidirectional antenna pair. Finally, a distance-dependent statistical impulse response model of the channel is presented along with simulation results that significantly concur with the measured data.
引用
收藏
页码：752 / 758
页数：7
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