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Hybrid Transmission Power Control for Wireless Body Sensor Systems

Author

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  • Woosik Lee
  • Byoung-Dai Lee
  • Namgi Kim

Abstract

In wireless body sensor network systems (WB-SNSs), the sensor nodes have very limited battery power because they are tiny, lightweight, and wearable or implantable. As a result, WB-SNSs require a very efficient transmission power control (TPC) algorithm for effectively reducing energy consumption and extending the lifetime of sensor nodes. To achieve this goal, we propose a novel TPC algorithm referred to as hybrid TPC. The hybrid TPC algorithm adaptively selects a conservative or an aggressive control mechanism depending on current channel conditions. The conservative control mechanism, which slowly changes transmission power level (TPL), is suitable in a dynamic environment. On the other hand, the aggressive control mechanism, which rapidly changes TPL, is ideal in a static environment. In order to evaluate the effectiveness of the hybrid TPC algorithm, we implemented various TPC algorithms and compared their performances against the hybrid TPC algorithm in different channel environments. The experimental results showed that the hybrid TPC algorithm outperformed other TPC algorithms in all channel environments.

Suggested Citation

  • Woosik Lee & Byoung-Dai Lee & Namgi Kim, 2014. "Hybrid Transmission Power Control for Wireless Body Sensor Systems," International Journal of Distributed Sensor Networks, , vol. 10(10), pages 259181-2591, October.
    • Handle: RePEc:sae:intdis:v:10:y:2014:i:10:p:259181
    DOI: 10.1155/2014/259181
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