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Date of Publication:2015-01-01

Journal:单片机与嵌入式系统应用

Affiliation of Author(s):软件学院

Issue:8

Page Number:26-29

ISSN No.:1009-623X

Abstract:To solve power control algorithm’s drawbacks of a large amount of computation,high precision positioning and non-applicabili-ty for mobile network,the scheme of dynamic power control based on link quality indication (LQI)is proposed.The receiving node calcu-lates the optimal power level of the sending node according to LQI and transmission power.Three exponential smoothing is used to fore-cast LQI which improves the drawback of LQI fluctuation.Matlab simulation based on online modeling proves the validity of the power control strategy.The experiment platform based on JN5148 tests the scheme of dynamic power control with coulometer,and the results show that the network power is reduced by 1 5 .3%.

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