Title :
A New Ray Optical Statistical Model for Multipath Characteristics Pertinent to Indoor Geolocation
Author :
Akgul, F.O. ; Pahlavan, Kaveh
Author_Institution :
Center for Wireless Inf. Network Studies, Worcester Polytech. Inst., Worcester, MA
Abstract :
A ray optics based statistical multipath channel model has been developed to describe the indoor multipath propagation including the important parameters such as path gain, time-of-arrival, angle-of-arrival and number of multipath components. Development of such a model is crucial for performance evaluation of indoor positioning systems. Based on a comprehensive ray-tracing database obtained on the 3rd floor of Atwater Kent Laboratories at Worcester Polytechnic Institute, multipath time-of-arrival relative to first arrival has been modeled using a lognormal distribution, angle-of-arrival has been modeled as a 3 peak doppler-like probability density function relative to the transmitter-receiver interconnection line. Path gains have been modeled using the information obtained from path arrival along with statistical object interactions such as reflection and transmission, and the number of multipath components has been modeled by a distance dependent exponential function.
Keywords :
direction-of-arrival estimation; indoor radio; log normal distribution; multipath channels; time-of-arrival estimation; angle-of-arrival; indoor geolocation; indoor positioning systems; lognormal distribution; path gain; ray optical statistical model; statistical multipath channel model; time-of-arrival; transmitter-receiver interconnection line; Bandwidth; Optical devices; Optical fiber networks; Optical propagation; Optical scattering; Optical transmitters; Power system modeling; Ray tracing; Reflection; Signal resolution;
Conference_Titel :
Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE
Conference_Location :
Budapest
Print_ISBN :
978-1-4244-2947-9
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2009.4917516
