Abstract：The space-alternating generalized expectation-maximization (SAGE) algorithm provides efficient, accurate indoor channel multipath estimation. This paper describes a multipath-based probabilistic fingerprinting method for indoor positioning that utilizes the channel multipath parameters obtained by the SAGE algorithm as fingerprinting data to achieve better positioning accuracy and robustness. Tests of measurements in a typical indoor environment show that this method is more accurate than traditional indoor positioning methods.
Priyantha N B, Chakraborty A, Balakrishnan H. The cricket location-support system [C]//Proceedings of the 6th Annual International Conference on Mobile Computing and Networking. New York, NY, USA: ACM, 2000: 32-43.
Pan J J, Yang Q, Pan S J. Online co-localization in indoor wireless networks by dimension reduction [C]//Proceedings of the National Conference on Artificial Intelligence. Menlo Park, CA, USA: AAAI Press, 2007: 1102-1107.
Pan S J, Kwok J T, Yang Q, et al. Adaptive localization in a dynamic WiFi environment through multi-view learning [C]//Proceedings of the National Conference on Artificial Intelligence. Menlo Park, CA, USA: AAAI Press, 2007: 1108-1113.
Ubisense. My world inside [Z/OL]. [2014-07-01].http://www.ubisense.net/.
Liu H, Darabi H, Banerjee P, et al. Survey of wireless indoor positioning techniques and systems [J]. Systems, Man, and Cybernetics, Part C: Applications and Reviews, IEEE Transactions on, 2007, 37(6): 1067-1080.
Xu Y, Sun Y. Neural network-based accuracy enhancement method for WLAN indoor positioning [C]//Vehicular Technology Conference(VTC Fall), 2012 IEEE. Piscataway, NJ, USA: IEEE, 2012: 1-5.
Hara S, Yabu T, Takizawa K. Introduction of MAP estimation to UWB-IR TOA localization [C]//Wireless Communication Systems (ISWCS), 2010 7th International Symposium on. Piscataway, NJ, USA: IEEE, 2010: 31-35.
Luo Y, Law C L. Indoor positioning using UWB-IR signals in the presence of dense multipath with path overlapping [J].Wireless Communications, IEEE Transactions on, 2012, 11(10): 3734-3743.
Bahl P, Padmanabhan V N. RADAR: An in-building RF-based user location and tracking system [C]//IEEE INFOCOM 2000. Piscataway, NJ, USA: IEEE, 2000: 775-784.
Li B, Salter J, Dempster A G, et al. Indoor positioning techniques based on wireless LAN [C]//The 1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications. Piscataway, NJ, USA: IEEE, 2006: 113-119.
Fleury B H, Tschudin M, Heddergott R, et al. Channel parameter estimation in mobile radio environments using the SAGE algorithm [J]. Selected Areas in Communications, IEEE Journal on, 1999, 17(3): 434-450.
Fleury B H, Jourdan P, Stucki A. High-resolution channel parameter estimation for MIMO applications using the SAGE algorithm [C]//2002 International Zurich Seminar on Broadband Communications. Piscataway, NJ, USA: IEEE, 2002: 1-9.
Mostofi Y, Gonzalez-Ruiz A, Gaffarkhah A, et al. Characterization and modeling of wireless channels for networked robotic and control systems-a comprehensive overview [C]//IEEE/RSJ International Conference on Intelligent Robots and Systems. Piscataway, NJ, USA: IEEE, 2009: 4849-4854.
Rui Y, Zhang Y, Liu S, et al. 3.52-GHz MIMO radio channel sounder [C]//IEEE International Conference on Communications, Circuits and Systems 2008. Piscataway, NJ, USA: IEEE, 2008: 79-83.