In former algorithm, the omni-antenna is the only option which is also a key reason for the fact that directional diffusion algorithm and cluster based algorithm are impossible to be ralph lauren polo shirts implemented together. In this dissertation, directional antenna is introduced in the WSN routing algorithm designation, and based on Lacoste Polo Shirts hierarchy clustering concept and usage of directional antenna which brings in the advantage of energy saving and effective transmission in a fixed direction, a new WSN clustering algorithm is introduced: polo shirts. Then NS-2 system is briefly introduced in this dissertation. The NS-2 implementations of discount wedding dresses and CBDA are realized with simulation results showing that, compared to LEACH,CBDA algorithm can prolong the life span of WSN by 20% and postpone the time point when first node begin to die(running out of power)by 30%.
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