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所属单位：电子信息工程学院
发表刊物：Int. Conf. Wirel. Commun. Signal Process., WCSP
摘要：In this paper, an energy efficient optimization scheme with low complexity for simultaneous wireless information and power transfer (SWIPT)-based distributed antenna system (DAS) is presented. The aim is to optimize energy efficiency (EE) with the constraints on maximum transmit power of each distributed antenna (DA) port and minimum harvested energy. By analyzing the structure of the objective problem, it is found that the EE optimization problem, which combines transmit power allocation (PA) with power splitting (PS) problem, can be predigested to an optimized one of PA. Based on this, utilizing Karush-Kuhn-Tucker (KKT) conditions and Lambert function, we can obtain the general form of optimal PA and corresponding closed-form solution. Finally, a low-complexity algorithm without iteration is put forward to attain the optimal number of valid DA ports and the homologous PA, as well as the power splitting ratio. Through Monte Carlo simulations, the validity of the proposed scheme and algorithm for SWIPT-based DAS are well verified. © 2018 IEEE.
是否译文：否
发表时间：2018-11-30
合写作者：Chu, Junya,li he,朱秋明
通讯作者：虞湘宾