基于混合储能和能量捕获的多接入信道容量建模与分析

doi:10.11959/j.issn.1000-436x.2018139

Abstract

Abstract:

Energy harvesting (EH) has been considered as a promising technology to solve the constrained energy problem in the devices of IoT with its advantages of flexible deployment and sustainable energy supply.For multiple access channel with energy harvesting,a hybrid energy storage structure model composed by super capacitor and battery was proposed for the devices of IoT.According to the peculiarities of medium access channel and energy harvesting system,an optimized energy allocation strategy with exponential-type decline (ETD) was presented,the upper and lower bounds of the average throughput were deduced,in particular,the gap of two bounds was derived to be a constant.The channel capacity was further obtained by utilizing the relationship between the average throughput and the channel capacity.In the simulations,the effect of harvested energy,storage capacity and the number of nodes on the channel capacity were analyzed respectively.Experiment results show that compared with the conventional wireless node with single battery storage,the proposed hybrid energy storage structure can improve the harvested energy value and increase the multiple access channel capacity by using adaptive modulation scheme when transmitting the signals.

Key words: IoT, energy harvesting, hybrid energy storage, channel capacity, energy allocation

CLC Number:

TN925

Xinwei YAO,Mengna ZHANG,Chaochao WANG,Wanliang WANG. Modeling and analysis of multiple access channel capacity based on hybrid energy storage and energy harvesting[J]. Journal on Communications, 2018, 39(8): 150-159.

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References 20

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