Rate-energy tradeoff and decoding error probability-energy tradeoff for SWIPT in finite code length

Il Min Kim, Dong In Kim, Jae Mo Kang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In this paper, the fundamental performance of the simultaneous wireless information and power transfer (SWIPT) system is studied. Unlike any existing works where the codelength was assumed to be infinity, we explicitly consider the case of the finite codelength, which is much more realistic especially for the practical SWIPT system due to its limited power and complexity. For the four well-known SWIPT schemes, we analyze the tradeoff between the rate and energy; then we study the optimality of those SWIPT schemes. Furthermore, to fully characterize the fundamental performance of the SWIPT system in the regime of finite codelength, we propose to additionally use the new tradeoff between the decoding error probability and the harvested energy. In the sense of this new tradeoff, we study the optimality of the four SWIPT schemes. For the analysis of the two types of tradeoffs, we consider two different cases: when the transmit power of symbols is adapted or not. For various scenarios, we provide useful insights into the performance of the SWIPT system in the finite codelength.

Original languageEnglish
Pages (from-to)8220-8234
Number of pages15
JournalIEEE Transactions on Wireless Communications
Volume16
Issue number12
DOIs
StatePublished - Dec 2017

Keywords

  • Decoding error probability-energy tradeoff
  • Energy harvesting
  • Finite codelength
  • Rate-energy (R-E) tradeoff
  • SWIPT
  • Transmit power adaptation

Fingerprint

Dive into the research topics of 'Rate-energy tradeoff and decoding error probability-energy tradeoff for SWIPT in finite code length'. Together they form a unique fingerprint.

Cite this