Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2014.1564.1569JayabharathyR. R. Varadarajan V. Prithiviraj 1220141414Location based services are becoming attractive with the deployment
of next generation wireless networks and broadband wireless technologies. In
this study an attempt is made to implement three dimensional Hyperbolic Position
Location (PL) system using UWB and Wi-Fi wireless technologies. Generalized
Cross Correlation (GCC) method is utilized to estimate the time delay and position
estimation is obtained by range difference PL system, resulting in a set of
non-linear equations. It is then transformed into linear equations using Taylor
series. Finally comparison of performance between UWB and Wi-Fi based PL systems
is analyzed in terms of Mean Square Error (MSE) for closure reference node densities.
The proposed system is composed of wireless nodes (Receivers or Reference nodes
whose positions are known), tags (Transmitter or Unknown position of the target)
and location server to calculate the target position accurately.]]>Zhang, D., F. Xia, Z. Yang, L. Yao and W. Zhao,20102010pp: 16Chandrasekaran, G., M.A. Ergin, J. Yang, S. Liu, Y.Y. Chen, M. Gruteser and R.P. Martin,20092009Gezici, S., Z. Tian, G.B. Giannakis, H. Kobayashi, A.F. Molisch, H.V. Poor and Z. Sahinoglu,2005227084Liu, H., H. Darabi, P. Banerjee and J. Liu,20073710671080Jayabharathy, R., V. Prithiviraj, R. Varadarajan, P. Pavithra, P.M. Ruben Shyam and S. Anand,20072007pp: 1721Jayabharathy, R., V. Prithiviraj, R. Varadarajan, V. Arvind, K.D. Murugan and S.J. Prabhu,20092009pp: 1313Yang, J. and Y.Y. Chen,20092009pp: 16Liberti Jr., J.C. and T.S. Rappaport,1999Di Benedetto, M.G. and G. Giancola,20041st Edn.,Pages: 528Pages: 528Cypriani, M., F. Lassabe, P. Canalda and F. Spies,20102010Jin, M.H., E.H.K. Wu, Y.B. Liao and H.C. Liao,20032003pp: 929933Chai, W., J.H. Zhou, C. Chen, H. Nies and O. Loffeld,20112011