This paper considers point-To-point wireless communications where an energy-constrained node, which has insufficient energy for data transmission, wants to exchange messages with a node with enough energy. In this system, we study power splitting (PS) based energy cooperation methods by exploiting wireless energy transfer techniques and propose a new concept called sustainable wireless information and power exchange (SWIPE). In this SWIPE protocol, the node which has sufficient energy first transmits the information signal to the energy-constrained node. Then, the received signal at the energy-constrained node is utilized for both information decoding and energy harvesting via a PS circuit. At the consecutive time slot, by using the harvested energy, the energy-constrained node is now able to send a signal to the other node which employs a similar PS technique. This procedure continues by switching the operations of two nodes at each time slot. For the proposed SWIPE protocol, we present the optimal PS ratio computation algorithm in order to maximize the weighted sum throughput performance. Simulation results confirm the efficacy of the proposed SWIPE protocol over conventional schemes.
|Title of host publication||2017 IEEE Global Communications Conference, GLOBECOM 2017 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|Publication status||Published - 2017 Jul 1|
|Event||2017 IEEE Global Communications Conference, GLOBECOM 2017 - Singapore, Singapore|
Duration: 2017 Dec 4 → 2017 Dec 8
|Name||2017 IEEE Global Communications Conference, GLOBECOM 2017 - Proceedings|
|Other||2017 IEEE Global Communications Conference, GLOBECOM 2017|
|Period||17/12/4 → 17/12/8|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP) of Korea Government under Grant 2014R1A2A1A10049769 and 2017R1A2B3012316. The work of K.-J. Lee was supported in part by Korea Electric Power Corporation (No. R17XA05-71) and Korea Evaluation Institute of Industrial Technology (KEIT) grant funded by the Korea government (MOTIE) (No.10079984, Development of non-binding multimodal wireless power transfer technology for wearable device).
© 2017 IEEE.
ASJC Scopus subject areas
- Computer Networks and Communications
- Hardware and Architecture
- Safety, Risk, Reliability and Quality