Abstract:
Accurately estimating the location of a Mobile Station is a key requirement to effectively
provide a wide range of Location Based Services over mobile network. Since the mobile
phone has become a common device in today's society, location based services are very
popular among cellular subscribers. Hence developing cellular positioning techniques has
been a key research problem and numerous localization solutions have been proposed.
These include technologies such as Cell ID, angle and time of arrival methods and
fingerprinting methods.//
This thesis presents fingerprinting based positioning techniques suitable for different
outdoor and indoor environments. Thus multiple positioning techniques are proposed,
implemented and evaluated for different environments. Three outdoor trials in areas falls
under urban, suburban and rural areas and two indoor trials in two nuiti storey buildings
were used for evaluation. The ultimate solution proposed in this thesis is not a single
positioning technique; rather it presents several positioning techniques that achieve
optimum performance in each test environment.//
This thesis proposes a novel fingerprint collection process for outdoor positioning and
introduces a more accurate correlation algorithm. This thesis reports 67% positioning
error as 12 n, 299 r and 221 l for urban, suburban and rural areas respectively.
Experimental results show that the proposed positioning methods achieve accuracy far
better than Cell-ID and trilateration approaches for the tested network environments
especially for rural area. The 67 % positioning error for rural area is IC45 t and 1386 n
with basic Cell-ID and trilateration techniques while proposed fingerprinting based
technique reports 67% positioning error as 221 m.//
With indoor positioning this thesis reports 50% positioning error as 20.5m and 8.7m for
the selected two buildings. Also it was possible to accurately differentiate between floors
in these multi storey buildings. Results achieved for Building 2 is reasonable when
compared with the results reported in a similar study by Ve jc Otsason et ii (2005).
