Abstract
We consider wireless-powered amplify-and-forward relaying in cooperative communications and propose block-wise time-switching based energy harvesting protocol to implement wireless energy harvesting (EH) and information transmission (IT) at the energy constrained relay node. The time-switching EH protocol switches the relay operation between EH and IT such that during EH, relay harvests energy through the received radio-frequency signal from the source and during IT, the relay receives information signal from the source and uses the harvested energy to amplify and forward source signal to the destination. In our proposed block-wise time-switching EH protocol, the whole transmission block time is used for either EH or IT. The attractive feature of our proposed protocol is that the relay transmits at preset fixed transmit power and no channel state information is required either by the source or relay node. We derive exact expression of the analytical throughput for the proposed protocol and verify it through simulation. In addition, we show that our proposed protocol outperforms the existing time-switching EH protocol because it allows efficient use of resources by intelligently switching between EH and IT in an online fashion.
| Original language | English |
|---|---|
| Title of host publication | 2015 IEEE International Conference on Communications, ICC 2015 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 80-85 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781467364324 |
| DOIs | |
| State | Published - 9 Sep 2015 |
| Externally published | Yes |
Publication series
| Name | IEEE International Conference on Communications |
|---|---|
| Volume | 2015-September |
| ISSN (Print) | 1550-3607 |
Bibliographical note
Publisher Copyright:© 2015 IEEE.
Keywords
- Wireless energy harvesting
- amplify-and-forward
- throughput
- wireless communications
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering