Xiaoye Shi1, *, Jin Sun1, Dongming Li1, Fei Ding2, Zhaowei Zhang1
CMC-Computers, Materials & Continua, Vol.65, No.2, pp. 1373-1384, 2020, DOI:10.32604/cmc.2020.011018
Abstract In this paper, we study the rate-energy tradeoff for wireless simultaneous information and power transfer in full-duplex and half-duplex scenarios. To this end, the
weighting function of energy efficiency and transmission rate, as rate-energy tradeoff
metric is first introduced and the metric optimization problem is formulated. Applying
Karush-Kuhn-Tucker (KKT) conditions for Lagrangian optimality and a series of
mathematical approximations, the metric optimization problem can be simplified. The
closed-form solution of the power ratio is obtained, building direct relationship between
power ratio and the rate-energy tradeoff metric. By choosing power ratio, one can make
the tradeoff between information rate and harvested… More >
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