We reconsider in details the Dirac equation in the context of the Magueijo-Smolin approach to the Doubly Special Relativity. Starting from the deformed dispersion relation we focus on obtaining a Dirac equation in momentum space, allowing us to achieve a more in-depth study of its semiclassical approach. Finally by means of a "deformed correspondence principle" we gain access to an equation in the position space. Keywords: Doubly special relativity; Magueijo-Smolin approach; Dirac equation. 1250031-2 Int. J. Mod. Phys. A 2012.27. Downloaded from www.worldscientific.com by WAKE FOREST UNIVERSITY on 02/03/15. For personal use only.

Different approaches based on various wireless technologies have been proposed so far for indoor localization. Radio frequency Identification (RFID) indoor localization seems to be a promising way of research. The identification capability of this technology combined to localization methods improves the results obtained by other wireless technologies such as Wifi, GPS, Zigbee... This paper details some localization techniques used for RFID Tags localization in Indoor environment. In particular, Fingerprinting methods are compared to Distance estimation methods. We will show through several simulation experiments, using NS2 and Matlab software, that fingerprinting techniques outperform Distance estimation techniques for localization and tracking tasks.

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