Energy efficient data communication over fading channels

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...

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Bibliographic Details
Main Authors: Danlu Zhang, Wasserman, K.M.
Format: Conference Proceeding
Language:English
Subjects:
Algorithm design and analysis
Communication system control
Data communication
Energy consumption
Energy efficiency
Fading
State feedback
Throughput
Time-varying channels
Wireless communication
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Description
Summary: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.
ISSN:1525-3511
1558-2612
DOI:10.1109/WCNC.2000.904761