In this paper, we investigate the application of simultaneous wireless information and power transfer (SWIPT) in a full-duplex relay network, where the relay node is wirelessly powered by harvesting a portion of the received signal power from the source node. Different from existing work that has employed time-switching-SWIPT, we propose to use power-splitting-SWIPT. As a result, our proposed approach gives rise to a truly full-duplex relay network, where the information reception and transmission take place simultaneously at the relay node all the time. This more thorough exploitation of the full-duplex feature consequently leads to a significant capacity improvement, compared with existing alternatives in the literature.
Bibliographical noteFunding Information:
Manuscript received December 24, 2015; revised May 11, 2016 and July 1, 2016; accepted September 24, 2016. Date of publication October 10, 2016; date of current version June 16, 2017. This work was supported in part by the National Natural Science Foundation of China under Grant 61622101 and Grant 61571020, in part by the National 973 Project under Grant 2013CB336700, in part by the National 863 Project under Grant SS2015AA011306, in part by the Major Project from Beijing Municipal Science and Technology Commission under Grant D151100000115004, and in part by the National Science Foundation under Grant CNS-1343189 and Grant ECCS-1232305. The review of this paper was coordinated by Dr. D. Zhao.
- Amplify-and-forward (AF)
- energy harvest
- ergodic capacity
- full-duplex relay
- simultaneous wireless information and power transfer (SWIPT)