| Conference |
| Type of Publication |
| Pre-processing of Fingerprints to Improve the Positioning
Accuracy of 802.11-based Positioning Systems |
| Title |
|
|
| Authors |
| Proc. of the First ACM International Workshop on
Mobile Entity Localization and Tracking in GPS-less
Environments (MELT 2008), San Francisco, United States of America, 19. September 2008 |
| Published in |
| Since the first days of location-based
services, the reliable estimation of a user’s position has been
seen as one of the key prerequisites for their success. While
satellite-based systems can deliver suitable results when the
user is outdoors, another solution is needed in case that he is
located inside a building. Here, the position estimation with the
help of 802.11 and fingerprinting algorithms promises to fill the
gap. One major drawback though is the high initial effort that is
needed to deploy such a fingerprintingbased 802.11 positioning
system. Therefore, in this paper, novel algorithms that
pre-process the data collected for the fingerprints are
presented. By this pre-processing step, the amount of data that
needs to be collected and therefore also the amount of time that
needs to be spent collecting the data can be reduced by about
80%. Additionally, despite the reduced amount of data, the
positioning accuracy cannot only be retained but even slightly
improved by about 15% depending on the system’s setup. |
| Abstract |
|
IEEE 802.11
positioning systems
fingerprinting
context-aware applications
location-based services
|
| Keywords |
| [PDF]
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| Downloads & Bib-Entries |
