Indoor localization using time difference of arrival and time-hopping impulse radio

To obtain location info is the precondition for more and more applications. Reliable and accurate positioning for users requires a local replacement for satellite navigation. The ultra-wideband (UWB) impulse radio system is particularly suitable for such local systems. Indoor localization using multiple antenna time different of arrival (TDOA) estimation techniques and time-hopping impulse radio system and signals at the receiver perform a filtering matched to the antipodal pulse amplitude modulation (A-PAM) template sequence is concentrated on the paper. Transmitted pulses are distorted by receive antenna, other system components such as filters and amplifiers, and the multipath environment, so the challenge of realize high resolution depends on accurate time of arrival estimation at receiver antennas. The computer simulation gives localization results by means of RMS errors are 7.69 cm, 8.5 cm 35.11 cm under AWGN and IEEE 802.15.3a CM1, CM3 emulational indoor environments on a 10/spl times/10 meter square area.

[1]  Moe Z. Win,et al.  Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications , 2000, IEEE Trans. Commun..

[2]  G. Clifford Carter,et al.  Coherence and time delay estimation : an applied tutorial for research, development, test, and evaluation engineers , 1993 .

[3]  Laurence B. Milstein,et al.  Multicarrier CDMA overlay for ultra-wideband communications , 2004, IEEE Transactions on Communications.

[4]  Moe Z. Win,et al.  Impulse radio: how it works , 1998, IEEE Communications Letters.

[5]  John W. McCorkle,et al.  DS-CDMA: the modulation technology of choice for UWB communications , 2003, IEEE Conference on Ultra Wideband Systems and Technologies, 2003.

[6]  M. Tayal.  Location services in the GSM and UMTS networks , 2005, 2005 IEEE International Conference on Personal Wireless Communications, 2005. ICPWC 2005..

[7]  Ebrahim Saberinia,et al.  Single and multi-carrier UWB communications , 2003, Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings..

[8]  Sergio Benedetto,et al.  Performance evaluation and comparison of different modulation schemes for UWB multiaccess systems , 2003, IEEE International Conference on Communications, 2003. ICC '03..