Summary

In this project CWINS and IWT, a small wireless radio development firm, join forces to design an MB-OFDM UWB system with indoor positioning capabilities.

The main contribution of CWINS is to characterize UWB RF propagation in various environments and develop indoor positioning algorithms that support accurate indoor positioning in an adhoc networking environment.  IWT will design the hardware for implementation of the actual communication network. Phase I of this project was completed successfully and we are awaiting the start of Phase II.

In this project Prof. Pahlavan’s group used the UWB measurements in 3-6GHz bands to develop a novel model for indoor geolocation. The model was then used for evaluation of indoor geolocation algorithms.

Principal Investigators:

• Kaveh Pahlavan (CWINS)
• Jim Silverstrim (IWT)

Research Staff (CWINS):

• Xinrong Li
• Bardia Alavi
• Nayef Alsindi

Sponsor: DARPA/DoD SBIR: BAA 03-029

Duration: February 2004 - June 2006

Publications:

• Bardia Alavi, PhD, 2006, Distance Measurement Error Modeling for Time-of-Arrival Based Indoor Geolocation.
• B. Alavi, K. Pahlavan, N. Alsindi, and X. Li, “Using UWB Measurements for Statistical Analysis of the Ranging Error in Indoor Multipath Environment,” accepted for publication in International Journal of Wireless and Optical Communications (IJWOC), 2006.
• B. Alavi, N. Alsindi, K. Pahlavan, “UWB Channel Measurements for Accurate Indoor Localization,” Military Communications Conference Proceedings, MILCOM 2006, Washington, DC, 23-25 October 2006.
• N. Alsindi, K. Pahlavan, B. Alavi, “An error propagation aware algorithm for precise cooperative indoor localization“, submitted to Military Communications Conference MILCOM 2006, Washington DC, 23-25 October 2006.
• N. Alsindi, K. Pahlavan, B. Alavi, X. Li, “A Novel Cooperative Localization Algorithm for Indoor Sensor Networks,” 17th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC’06), Helsinki, Finland, 11-14 Sept. 2006.