标题：Underlay spectrum sharing with wireless power transfer towards primary user
作者：Zhai, Chao ;Shi, Long ;Chen, He
作者机构：[Zhai, Chao ] School of Information Science and Engineering, Shandong University, Jinan, China;[Chen, He ] School of Electrical and Information Engine 更多
会议名称：9th International Conference on Wireless Communications and Signal Processing, WCSP 2017
会议日期：11 October 2017 through 13 October 2017
来源：2017 9th International Conference on Wireless Communications and Signal Processing, WCSP 2017 - Proceedings
摘要：We propose a wireless power transfer (WPT) based underlay spectrum sharing scheme, where a primary user (PU) needs to harvest wireless energy from an access point (AP) and then transmit its data to AP using the harvested energy. In the same area, a secondary transmitter (ST) intends to communicate with a secondary receiver (SR). The secondary data can be transmitted along with the WPT, which can on one hand improve the spectral efficiency of the secondary data transmission and on the other hand improve the WPT efficiency towards PU. In the primary data transmission period, ST continuously transmits its data to SR by properly adjusting its power under the interference constraint of primary system. The interference cancelation technique is used by SR to retrieve its desired secondary data. We analyze the outage probability and throughput of both systems. Numerical results show that our scheme can well accommodate the secondary data transmissions while greatly improving the performance of primary system. © 2017 IEEE.