Title :
Effect of Bandwidth and Antenna Directivity on the Range Estimation Accuracy in a Multipath Environment
Author :
Tarique, Zunnoor ; Malik, Wasim Q. ; Edwards, David J.
Author_Institution :
Dept. of Eng. Sci., Oxford Univ.
Abstract :
The accurate detection of the direct path in a dense multipath environment is vital for reliable performance of time-based and angle-of-arrival (AOA) based location estimation techniques. This paper investigates the effect of measurement bandwidth and antenna directivity on the detection of the direct path in a typical indoor scattering environment. It is experimentally shown that the ranging error diminishes with increase in measurement bandwidth and the standard deviation of the root mean square ranging error (RMSRE) is reduced by using directional transmit antennas. The results are obtained in a line-of-sight (LOS) propagation environment and are based on the time-of-arrival (TOA) based ranging technique
Keywords :
direction-of-arrival estimation; directive antennas; electromagnetic wave scattering; indoor radio; mean square error methods; mobility management (mobile radio); multipath channels; time-of-arrival estimation; transmitting antennas; angle-of-arrival based location estimation techniques; antenna directivity; dense multipath environment; directional transmit antennas; indoor scattering environment; line-of-sight propagation environment; range estimation accuracy; root mean square ranging error; time-based location estimation techniques; time-of-arrival based ranging technique; Antenna measurements; Antennas and propagation; Bandwidth; Broadband antennas; Delay estimation; Equations; Scattering; Signal resolution; Transmitters; Ultra wideband technology; Multipath propagation; delay estimation; distance measurement; wideband propagation;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683396
