Key Lab of Universal Wireless Communications;
Ministry of Education;
Beijing University of Posts and Telecommunications;
Beijing 100876;
China;
Hebei Key Laboratory of Security and Protection Information Sensing and Processing;
Hebei University of Engineering;
Handan 056038;
China;
State Key Laboratory of Networking and Switching Technology;
Beijing University of Posts and Telecommunications;
Beijing 100876;
China;
Beijing Telecom Planning&Designing Institute Co.;
Ltd.;
Beijing 100048;
China;
spectrum efficiency; power beacon; WPCN; time splitting; interference channel; wireless power transfer;