On quantifying covertness of ultra-wideband impulse radio

by 1978- Bharadwaj, Arjun

Bharadwaj, Arjun. On Quantifying Covertness of Ultra-Wideband Impulse Radio. (Under the direction of Dr. Keith Townsend.) Impulse Radio (IR) is a time-hopping ultra wideband CDMA communication system that possess unique characteristics which make it a promising candidate for future tactical military radio networks. IR makes a good candidate because of its covertness, low power spectral density and relative immunity to multipath fading. Beyond qualitative assertions about the performance and covertness of impulse radio, there has not been a thorough quantitative evaluation of the covertness of IR. Thus there is a need for an unclassified quantitative method for defining Low Probability of Detection (LPD) characteristics of a system. In this thesis, we compare the performance of impulse radio with DS CDMA with and without severe local interferers. Cellular systems are typically narrowband and thus the