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Recently it was proposed to adapt several transmission methods, including modulation, power control, channel coding and antenna diversity to rapidly time variant fading channel conditions. Prediction of the channel coefficients several tens-to-hundreds of symbols ahead is essential to realize these methods in practice. We describe a novel adaptive long(More)
In wireless communication systems, the direct signal and the reflected signals form an interference pattern resulting in a received signal given by the sum of these components. They are distinguished by their Doppler shifts at the mobile. Once the slowly varying parameters associated with these components are determined, the fading coefficients can be(More)
In this paper, we investigated a new deterministic approach to the estimation and prediction of the fading channel by exploiting the physical nature of the flat fading signal. Since the direct signal and the reflected signals form an interference pattern, the received signal is given by a sum of several scattered components. These are distinguished by their(More)
We compare the performance of suboptimal multiuser detectors for rapidly time-varying fading channels. Disjoint Kalman filters are incorporated in the detector structure to obtain phase and amplitude estimates for coherent detection and multi-access interference cancellation. We also evaluate performance of several multiuser detectors which do not require(More)