%0 Journal Article %A Kittipob Kondee and Chutima Prommak %D 2014 %J International Journal of Electronics and Communication Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 91, 2014 %T Optimal Design of Reference Node Placement for Wireless Indoor Positioning Systems in Multi-Floor Building %U https://publications.waset.org/pdf/9998851 %V 91 %X In this paper, we propose an optimization technique that can be used to optimize the placements of reference nodes and improve the location determination performance for the multi-floor building. The proposed technique is based on Simulated Annealing algorithm (SA) and is called MSMR-M. The performance study in this work is based on simulation. We compare other node-placement techniques found in the literature with the optimal node-placement solutions obtained from our optimization. The results show that using the optimal node-placement obtained by our proposed technique can improve the positioning error distances up to 20% better than those of the other techniques. The proposed technique can provide an average error distance within 1.42 meters. %P 1191 - 1195