Title: Optimal transmission range for wireless ad hoc networks based on energy efficiency
Authors: Deng, Jing
Han, Yunghsiang S.
Chen, Po-Ning
Varshney, Prarnod K.
電信工程研究所
Institute of Communications Engineering
Keywords: energy efficiency;optimal transmission range;wireless ad hoc networks
Issue Date: 1-Sep-2007
Abstract: The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied for uniformly distributed network nodes. By assuming the existence of forwarding neighbors and the knowledge of their locations, the average per-hop packet progress for a transmission range that is universal for all nodes is derived. This progress is then used to identify the optimal per-hop transmission range that gives the maximal energy efficiency. Equipped with this analytical result, the relation between the most energy-economical transmission range and the node density, as well as the path-loss exponent, is numerically investigated. It is observed that when the path-loss exponent is high (such as four), the optimal transmission ranges are almost identical over the range of node densities that we studied. However, when the path-loss exponent is only two, the optimal transmission range decreases noticeably as the node density increases. Simulation results also confirm the optimality of the per-hop transmission range that we found analytically.
URI: http://dx.doi.org/10.1109/TCOMM.2007.904395
http://hdl.handle.net/11536/10360
ISSN: 0090-6778
DOI: 10.1109/TCOMM.2007.904395
Journal: IEEE TRANSACTIONS ON COMMUNICATIONS
Volume: 55
Issue: 9
Begin Page: 1772
End Page: 1782
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