Ambient intelligence (AmI)
considers responsive environments in which applications and services adapt
their behavior according to the user’s needs and changing context. One of the
most challenging aspects for many applications in AmI environments is location
and orientation of the surrounding objects. This is especially important for
effective cooperation among mobile physical objects in such smart environments.
In this paper, we propose a robust indoor positioning system that provides 2-D
positioning and orientation information for mobile objects. The system utilizes
low-range passive radio frequency identification (RFID) technology. The
proposed system, which consists of RFID carpets and several peripherals for
sensor data interpretation, is implemented and tested through extensive
experiments. Our results show that the proposed system outperforms similar
existing systems in minimizing the average positioning error.
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