Author_Institution :
U.S. Army Research Laboratory, Adelphi, MD, 20783, USA
Abstract :
In complex propagation environments such as urban canyons, tunnels, and indoor environments, achieving a reliable communications link is very challenging at conventional microwave frequencies. However, the lower VHF band has significant potential to support low complexity, low power, and reliable one-hop communications, because obstacles are much smaller relative to wavelength at this frequency (Dagefu et. al, Trans. Ant. Prop., vol. 61, no. 6, 2252).