Resource constraints require that ad hoc wireless networks are energy efficient during transmission and rate adaptation. In this paper we propose a novel cross-layer energy-efficient rate adaptation scheme that employs dynamic programming (DP) principle to analytically select the modulation scheme online. The scheme uses channel state information from the physical layer and congestion information from the scheduling layer to select a modulation rate. This online selection maximizes throughput while saving energy and preventing congestion. The simulation results indicate that an increase in throughput by 96% and energy-efficiency by 131% is observed when compared to the Receiver Based AutoRate (RBAR) protocol.
M. J. Zawodniok and J. Sarangapani, "Dynamic Programming-Based Energy-efficient Rate Adaptation for Wireless Ad Hoc Networks," Proceedings of the 31st IEEE Conference on Local Computer Networks, 2006, Institute of Electrical and Electronics Engineers (IEEE), Nov 2006.
The definitive version is available at http://dx.doi.org/10.1109/LCN.2006.322152
31st IEEE Conference on Local Computer Networks, 2006
Electrical and Computer Engineering
Keywords and Phrases
Dynamic Programming; Mobile Radio; Modulation; Protocols
Article - Conference proceedings
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