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Improving transmission reliability of low-power medium access control protocols using average diversity combining

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5 Author(s)
M. Ghamari ; Sch. of Comput. & Commun., Lancaster Univ., Lancaster, UK ; B. M. Heravi ; U. Roedig ; B. Honary
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Embedded computer systems equipped with wireless communication transceivers are nowadays used in a vast number of application scenarios. Energy consumption is important in many of these scenarios, as systems are battery operated and long maintenance-free operation is required. To achieve this goal, embedded systems employ low-power communication transceivers and protocols. However, currently used protocols cannot operate efficiently when communication channels are highly erroneous. In this study, we show how average diversity combining (ADC) can be used in state-of-the-art low-power communication protocols. This novel approach improves transmission reliability and in consequence energy consumption and transmission latency in the presence of erroneous channels. Using a testbed, we show that highly erroneous channels are indeed a common occurrence in situations, where low-power systems are used and we demonstrate that ADC improves low-power communication dramatically.

Published in:

IET Wireless Sensor Systems  (Volume:2 ,  Issue: 4 )