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دانلود رایکان مقاله انگلیسی ISI با موضوع بهبود طول عمر در شبکه های حسگر بی سیم با استفاده از الگوریتم تکامل تفاضلی هیبریدی

عنوان فارسی مقاله:

بهبود طول عمر در شبکه های حسگر بی سیم با استفاده از الگوریتم تکامل تفاضلی هیبریدی و تبرید شبیه سازی شده (DESA)

عنوان انگلیسی مقاله:

Lifetime Improvement in Wireless Sensor Networks using Hybrid Differential Evolution and Simulated Annealing (DESA)

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2. Related works

There are number of clustering protocols proposed in the literature [7]. Low Energy Adaptive Clustering Hierarchy (LEACH) has been the most well-known algorithms that forms nodes based on received signal strength and random probabilistic distribution. LEACH is used in WSN for minimization of energy dissipation [9]. It is a cluster based protocol which elects cluster heads on a round basis. The protocol works in two phases namely set up and steady state phase. It starts with the set up phase where the cluster heads are chosen followed by the steady state phase where the data are transmitted. LEACH is a stochastic protocol which makes use of a probability p. Here, r represents the round, G is the set of all the nodes that are eligible to become cluster heads and p is the probability that each of the nodes will become the cluster heads. For each sensor node a random number in the range [0, 1] is chosen. If the number is lesser than the threshold, T, the node is chosen as the cluster head.