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Expressions relating spectral efficiency, power and Doppler spectrum are derived for low-power Rayleigh- faded wireless channels with proper complex signaling. No side information on the state of the channel is assumed at the receiver. Rather, periodic reference signals are postulated in accordance 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 derived expressions thereby imbuing them with practical significance.
Date of Conference: 19-23 May 2008