A novel location-estimation method using direction-of-arrival estimation

A new location-estimation technique using direction-of-arrival (DOA) estimation enables accurate estimation of a transmitter location by unifying antenna arrays of all base stations into a large single array. Prototype base stations developed for a wireless LAN consist of a 4 x 4 two-dimensional antenna array and 16-channel RF and baseband modules. Measurement results using the prototypes demonstrate a root-mean-square (RMS) error of location estimation of 3.3 m in a non-line-of-sight (NLOS) environment.

[1]  K. Izumi,et al.  Car navigation with route information sharing for improvement of traffic efficiency , 2004, Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749).

[2]  R. O. Schmidt,et al.  Multiple emitter location and signal Parameter estimation , 1986 .

[3]  Paramvir Bahl,et al.  RADAR: an in-building RF-based user location and tracking system , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[4]  Andy Hopper,et al.  The active badge location system , 1992, TOIS.

[5]  Andy Hopper,et al.  A new location technique for the active office , 1997, IEEE Wirel. Commun..

[6]  Andy Hopper,et al.  The Anatomy of a Context-Aware Application , 1999, Wirel. Networks.

[7]  Thomas Kailath,et al.  ESPRIT-estimation of signal parameters via rotational invariance techniques , 1989, IEEE Trans. Acoust. Speech Signal Process..

[8]  C. Burrus,et al.  Array Signal Processing , 1989 .