DISTRIBUTED TERRESTRIAL RADIOLOCATION USING THE RLS ALGORITHM

This paper presents the development of two distributed terrestrial radiolocation algorithms that use range estimates derived from DS-CDMA waveforms. The first algorithm, which is RLS-based, is derived as the solution of an approximate least-squares positioning problem. This algorithm has the advantage of reduced computational complexity, compared with the EKF-based algorithm that is presented. It is shown via simulations that both positioning algorithms perform well, with the performance of the EKF-based algorithm being superior.

[1]  Mario Joa-Ng,et al.  A novel spread spectrum-based synchronization and location determination method for wireless system , 1999, IEEE Communications Letters.

[2]  Stergios I. Roumeliotis,et al.  Synergetic localization for groups of mobile robots , 2000, Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187).

[3]  Behnaam Aazhang,et al.  Subspace-based channel estimation for code division multiple access communication systems , 1996, IEEE Trans. Commun..

[4]  Sunwoo Kim,et al.  EM-based acquisition of DS-CDMA waveforms for radiolocation , 2001, 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221).

[5]  S. G. Carlson,et al.  A new pseudolite battlefield navigation system , 1998, IEEE 1998 Position Location and Navigation Symposium (Cat. No.98CH36153).

[6]  William Widnall,et al.  Stability of the Decentralized Estimation in the JTIDS Relative Navigation , 1983, IEEE Transactions on Aerospace and Electronic Systems.

[7]  Urbashi Mitra,et al.  Maximum-likelihood-based multipath channel estimation for code-division multiple-access systems , 2001, IEEE Trans. Commun..

[8]  Stefan Parkvall,et al.  DS-CDMA Synchronization in Time-Varying Fading Channels , 1996, IEEE J. Sel. Areas Commun..

[9]  Theodore S. Rappaport,et al.  Site-specific propagation prediction for wireless in-building personal communication system design , 1994 .

[10]  J. Holtzman,et al.  The non-line of sight problem in mobile location estimation , 1996, Proceedings of ICUPC - 5th International Conference on Universal Personal Communications.

[11]  Pi-Chun Chen,et al.  A non-line-of-sight error mitigation algorithm in location estimation , 1999, WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466).

[12]  Sunwoo Kim,et al.  Geometric derivation of expectation-maximization and generalized successive interference cancellation algorithms with applications to CDMA channel estimation , 2003, IEEE Trans. Signal Process..

[13]  Rudolf Mathar,et al.  Location tracking of mobiles in cellular radio networks , 1999 .

[14]  Urbashi Mitra,et al.  Analysis of MUSIC-based delay estimators for direct-sequence code-division multiple-access systems , 1999, IEEE Trans. Commun..

[15]  E. Tse,et al.  Distributed Estimation in Networks , 1983, 1983 American Control Conference.