On Coexistence of In-Band UWB-OFDM and GPS Signals

D. Garmatyuk and Y. Jade Morton

Abstract:	Ultrawideband (UWB) radar sensor and location systems are finding extended use nowadays due to their inherent high resolution, robust performance in multipath conditions, good electronic counter-countermeasure (ECCM) and covert-operations potential. Orthogonal frequency-division multiplexing (OFDM) is a multicarrier modulation technique which is being targeted for commercial UWB communications – however, it can potentially be also used in radar. The unique quality of UWB-OFDM waveforms is the dynamic spectrum allocation, which allows for increased pulse diversity, resistance to jamming and coexistence potential as compared to conventional short-pulse UWB signals. The goal of this initial study is to model a scenario under which GPS signals are received using the same UWBOFDM radar/communication system. By adaptive nulling of UWB-OFDM sub-bands we can achieve low interference between the radar and GPS signals and, therefore, show coexistence potential.
Published in:	Proceedings of the 2007 National Technical Meeting of The Institute of Navigation January 22 - 24, 2007 The Catamaran Resort Hotel San Diego, CA
Pages:	378 - 385
Cite this article:	Garmatyuk, D., Morton, Y. Jade, "On Coexistence of In-Band UWB-OFDM and GPS Signals," Proceedings of the 2007 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2007, pp. 378-385.
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