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International Conference on Mechanical Engineering and Technology (ICMET-London 2011)

Garry Lee
Garry Lee
Information Engineering Research Institute
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In order to succeed in commercial business fields, sensor networks must implement a hybrid ARQ scheme capable of supporting better transmission efficiency and reliability than currently exists. In this paper, we propose a novel hybrid ARQ scheme with cooperative coding for wireless sensor networks. In the proposed hybrid ARQ scheme, the ARQ scheme is combined with Reed Solomon (RS) coding to work in a cooperative manner. When the data is transmitted, the cooperation node keeps it temporarily through the overhearing. If the data transmission is in error, the retransmission is required to provide reliability. In this situation, if the cooperation node has a better link quality, then it will retransmit the data with the increased RS coding instead of the original sender. With the proposed hybrid ARQ scheme, the experimental results show that the transmission efficiency is improved by nearly 10 percent, while the reliability is provided as well.

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