Evaluation and Optimization of Battery-Energy-Aware PPM Schemes for Wireless Sensor Networks

Qiuling Tang Qiuling Tang,Liuqing Yang Liuqing Yang,Tuanfa Qin Tuanfa Qin,Shuyi Zhang Shuyi Zhang

doi:10.1109/icnsc.2006.1673165

Qiuling Tang Qiuling Tang, Liuqing Yang Liuqing Yang + Show 2 more

https://doi.org/10.1109/icnsc.2006.1673165

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Abstract

Nodes in wireless sensor networks (WSNs) are typically powered by batteries. Hence, their energy conservation is a critical problem. In this paper, pulse position modulation (PPM), one of the orthogonal signaling formats, is tailored for WSNs into two schemes: mono-mode PPM and multi-mode PPM. Resorting to an idealized system model and a practical system model, which combine the power consumptions in transmission and reception modules of nodes with the idealized and realistic battery characteristics, the energy efficiencies of mono- and multi-mode PPM are evaluated and compared. To minimize the battery energy consumption (BEC), these schemes are further optimized for a link in path-loss channels. Our analytical and numerical results show that considerable energy can be saved by multi-mode PPM, and/or by the parameter optimization in terms of constellation size M, at various communication distances

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