Estimation of Velocities in Mobile-to-Mobile Wireless Fading Channels

This paper proposes a new crossing-rate-based estimator that jointly estimates velocities of both the transmitter and receiver in mobile-to-mobile communications (M-to-M). The proposed estimator is designed for narrow-band wireless M-to-M communications over noise-free isotropic fading channels. The proposed estimator is evaluated through extensive computer simulations and the results show that the proposed algorithm provides very good estimation accuracy. Furthermore, the proposed estimator is tested in the presence of a non-isotropic scattering, line-of-sight propagation, and Gaussian noise and the results show that the good estimation accuracy is preserved.