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This paper investigates methods for link quality measurement of an indoor, time-varying wireless link. Link quality estimates are used for a number of higher-layer functions, including rate adaptation, routing, and topology control. The objective is to rapidly and efficiently estimate the current reliability of an RF link in terms of its packet success probability in the presence of a time-varying...
Turbo equalization that cooperates with channel prediction and iterative channel estimation is investigated for mobile broadband communications. Frames of information bits are encoded, interleaved, and mapped to symbols for transmission over time-varying radio channels. The Turbo receiver consists of a maximum a posteriori probability equalizer/demapper and a soft- input soft-output maximum a posteriori...
This paper addresses adaptive channel estimation for time-varying mobile wireless channels with nonstationary statistics. We presents a reduced complexity adaptive channel estimator based on a set membership filtering approach known as the Optimal Bounding Ellipsoid (OBE) algorithm. To exploit time and frequency domain correlation properties of the channel in an efficient low-complexity way, we allow...
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