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An Efficient Power Allocation Algorithm in OFDM-based Wireless Sensor Networks using Reserve Power  

Kim, Byung-Ho (Department of Computer Science and Engineering, Pohang University of Science and Technology (POSTECH))
Oh, Seoung-Youl (Department of Computer Science and Engineering, Pohang University of Science and Technology (POSTECH))
Kim, Chee-Ha (Department of Computer Science and Engineering, Pohang University of Science and Technology (POSTECH))
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.12B, 2010 , pp. 1251-1258 More about this Journal
Abstract
Orthogonal Frequency Division Multiplexing (OFDM) has been investigated as promising technology for future broadband communication. In this paper, we propose a power allocation algorithm for a frequency selective fading channel. However, many investigated algorithms that perform high computation overhead are not appropriate for sensor network systems due to hardware limitations. The proposed algorithm significantly reduces computational overhead and satisfies the power budget. Throughput of the algorithm is comparable to the optimum solution. Simulation results support the claim stated.
Keywords
Power Allocation; OFDM; Adaptive Bit Loading; Sensor Network;
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