Spectral efficiency in reference-signal-assisted low-power wireless communication

Abstract

Expressions relating spectral efficiency, power and Doppler spectrum are derived for low-power Rayleighfaded wireless channels with proper complex signaling. No/nside information on the state of the channel is assumed at the receiver. Rather, periodic reference signals are postulated in/naccordance with the functioning of most wireless systems. In contrast with most previous studies, which relied on block-fading channel models, a continuous-fading model is adopted. This embeds the Doppler spectrum directly in the/nderived expressions thereby imbuing them with practical significance.