Izvorni znanstveni članak
https://doi.org/10.24138/jcomss.v6i2.190
Properties of Channel Interference for Wi-Fi Location Fingerprinting
Eddie C. L. Chan
; Department of Computing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
George Baciu
; Department of Computing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
S.C. Mak
; Department of Computing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Sažetak
Localization systems for indoor areas have recently been suggested that make use of existing wireless local area network (WLAN) infrastructure and location fingerprinting approach. However, most existing research work ignores channel interference between wireless infrastructures and this could affect accurate and precise positioning. A better understanding of the properties of channel interference could assist in improving the positioning accuracy while saving significant amounts of resources in the location-aware infrastructure. This paper investigates to what extent the positioning accuracy is affected by channel interference between access points. Two sets of experiments compare how the positioning accuracy is affected in three different channel assignment schemes: ad-hoc, sequential, and orthogonal data is analyzed to understand what features of channel interference affect positioning accuracy. The results show that choosing an appropriate channel assignment scheme could make localization 10% more accurate and reduces the number of access points that are required by 15%. The experimental analysis also indicates that the channel interference usually obeys a right-skewed distribution and positioning accuracy is heavily dependent on channel interference between access points (APs).
Ključne riječi
Indoor positioning; Channel Interference; Location Fingerprinting
Hrčak ID:
180404
URI
Datum izdavanja:
22.6.2010.
Posjeta: 773 *