We investigate the effect of limiting the number of retransmission trials on the stability of slotted ALOHA systems with no capture effect. Using an a...

A new range/relative-speed sensor for automobiles is shown. Based on the six-port phase/frequency discriminator, it determines distance and Doppler fr...

This paper presents a propagation prediction tool (PPT), developed mainly to facilitate the path loss computation in urban environments. Based on anal...

Measurements of the natural propagation of UHF radio waves on an underground train are reported. Of prime interest are the natural propagation attenua...

A soft-decision method employing multiple threshold values for PN code acquisition in direct sequence spread spectrum (DS-SS) systems is described. We...