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The authors address transmission of data with deadline constraints over a wireless fading channel. Specifically, the system model consists of a wireless transmitter with data packets arriving to its queue having strict deadline constraints. The transmitter can control the transmission rate over time and the expended power depends on both the chosen rate and the present channel state. The objective is to obtain a rate-control policy that serves the data to meet the deadline constraints while also minimizing the transmission energy expenditure.
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