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Network lifetime (NL) is a critical metric in the design of energy-constrained wireless sensor networks (WSNs). In this paper, we investigate a joint optimal design of the physical, medium access control (MAC) and routing layers to maximize NL of a multiple-sources and single-sink (MSSS) WSN with energy constraints. The problem of NL maximization (NLM) can be formulated as a mixed integer-convex optimization...
Networking together hundreds or thousands of small and cheap wireless sensor nodes requires highly energy-aware communication protocols at each layer, and much research work has been done to address this issue. However, the time-varying nature of the wireless channel also has a significant influence on the communication energy consumption, and this has long been ignored in most existing state-of-the-art...
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