Analysis of OFDM Signals for Ranging and Communications

Andrew M. Graff, William N. Blount, Peter A. Iannucci, Jeffrey G. Andrews, and Todd E. Humphreys

Peer Reviewed

Abstract:	This paper analyzes the precision bounds of ranging (via time-of-arrival estimation) with OFDM signals and proposes methods for the co-design of OFDM waveforms meeting both ranging and communication goals. First, it presents a method for obtaining an upper bound for the channel capacity and a lower bound for the ranging variance of an OFDM system as a function of the OFDM parameters and channel model. Next, it introduces an analysis tool that implements this method, allowing for numerical computation of the capacity and ranging variance bounds from OFDM parameters. Finally, it presents a general analysis of the trade-offs associated with varying each OFDM parameter with respect to channel capacity and ranging variance.
Published in:	Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021) September 20 - 24, 2021 Union Station Hotel St. Louis, Missouri
Pages:	2910 - 2924
Cite this article:	Graff, Andrew M., Blount, William N., Iannucci, Peter A., Andrews, Jeffrey G., Humphreys, Todd E., "Analysis of OFDM Signals for Ranging and Communications," Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021), St. Louis, Missouri, September 2021, pp. 2910-2924. https://doi.org/10.33012/2021.17991
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