%0 Journal Article
%A GUO Shao-xiong
%A LIU Yu-tao
%A Lü Yu-jing
%A ZHANG Zhong-zhao
%T Resource Allocation Algorithm for Simultaneous Wireless Information and Power Transfer in Multi-Carrier Cognitive Radio
%D 2020
%R 10.13190/j.jbupt.2019-118
%J Journal of Beijing University of Posts and Telecommunications
%P 19-23
%V 43
%N 3
%X Cognitive radio can improve spectrum utilization through sensing spectrum, but it may generate circuit energy consumption, which decreases transmission energy.In order to guarantee transmission performance, a multi-carrier is proposed to realize simultaneous wireless information and power transfer whose optimal performance can be achieved through communication resource allocations.Cognitive radio uses some subcarriers to transmit information and collect the primary user radio frequency energy on the remaining subcarriers to supplement the perceived energy consumption.A joint optimization algorithm of subcarrier set and subcarrier power is proposed, which can maximize system performance subject the constraints of energy, interference and total power.Simulations show that energy harvesting may occupy transmission resources, a reasonable allocation of subcarriers is required to achieve a tradefoff between rate and energy.The proposed algorithm effectively improves system throughput by collecting energy to supplement sensing energy consumption.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2019-118