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- W4238056079 abstract "Considering three dimensional time hopping ultra wide band (TH-UWB) sensor networks with n sensor nodes uniformly and independently distributed in a cube of unit volume, the asymptotic lower bounds on the lifetime of non-cluster-based and cluster-based three dimensional TH-UWB sensor networks are derived irrespectively. For static three dimensional TH-UWB sensor networks, our finding is that the lower bound on the lifetime of cluster-based network is Omega((n/log n) <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>alpha/3</sup> ) and that the lower bound on the lifetime of non-cluster-based network is Omega((n/log n) <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>(alpha-3)/3</sup> ), thus clustering can significantly improve the lower bound on network lifetime. The results also indicate that for non-cluster-based three dimensional TH-UWB sensor network the lower bound on the lifetime in idea case is longer than that of static network by a factor of (n/log n) <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2/3</sup> , thus sensor nodes or sink moving randomly in the sensor field can improve the lower bound on lifetime of network." @default.
- W4238056079 created "2022-05-12" @default.
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- W4238056079 date "2007-08-01" @default.
- W4238056079 modified "2023-09-30" @default.
- W4238056079 title "Lower Bounds on Lifetime of Three Dimensional UWB Sensor Networks" @default.
- W4238056079 doi "https://doi.org/10.1109/wasa.2007.11" @default.
- W4238056079 hasPublicationYear "2007" @default.
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