Abstract

We develop a control algorithm or transmission scheme for wireless data communication over time-varying channels with memory which determines when to attempt a transmission so as to achieve a suitable balance between throughput and energy consumption; and we study the effect of channel memory on the performance, design, and structure of this scheme. The channel state is not directly observable, and thus the transmission decisions must be based on ACK/NAK information provided over a feedback channel. We cast the problem as a partially observable Markov decision process, and derive the optimal transmission scheme. Numerical results are also provided comparing performance of the optimal scheme with some other existing mechanisms.

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