Outage Performance of URLLC NOMA Systems with Wireless Power Transfer

Zhongyu Wang, Tiejun Lv*, Zhipeng Lin, Jie Zeng, P. Takis Mathiopoulos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

This letter considers an uplink short-packet ultra-reliable low latency communications (URLLC) system with finite blocklength (FBL). A quasi-static Rayleigh fading channel is adopted in this letter, and we employ wireless power transfer (WPT) to guarantee the data packets transmission of user equipment (UE). A novel non-orthogonal multiple access (NOMA) scheme with WPT under FBL is first proposed to improve reliability and reduce latency. Furthermore, we adopt outage probability (OP) as an important URLLC metric, and deduce two closed-form approximate bounds of system OP for finite and infinite battery capacities to characterize the relationship between reliability and latency. Simulation results verify that the derived bounds are tight with theoretical values, and the proposed scheme outperforms traditional OMA methods.

Original languageEnglish
Article number8917650
Pages (from-to)380-384
Number of pages5
JournalIEEE Wireless Communications Letters
Volume9
Issue number3
DOIs
Publication statusPublished - Mar 2020
Externally publishedYes

Keywords

  • Ultra-reliable low latency communications
  • battery capacity
  • non-orthogonal multiple access
  • outage probability
  • wireless power transfer

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Wang, Z., Lv, T., Lin, Z., Zeng, J., & Mathiopoulos, P. T. (2020). Outage Performance of URLLC NOMA Systems with Wireless Power Transfer. IEEE Wireless Communications Letters, 9(3), 380-384. Article 8917650. https://doi.org/10.1109/LWC.2019.2956536