Performance Analysis of UAV-Assisted Short-Packet Cooperative Communications

Lei Yuan, Nan Yang, Fang Fang, Zhiguo Ding

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


In this paper, we give performance analysis in an unmanned-aerial-vehicle (UAV) assisted ground short-packet communication system, which adopts a UAV as a wireless relay to accomplish ultra-reliable and low-latency communications (URLLC) between a base station and a user equipment (UE). Both large-scale fading, which is modeled as the free space path loss or the classic 3-Dimensional channel, and small-scale fading, which follows Nakagami-$m$ distribution, are considered in our system model. We first derive the closed-form expressions for the average overall block error ratio (BLER) at the UE by adopting Gasssian-Legendre quadrature (GLQ) method. Then, under the reliability and latency constraints at the UE, we apply both bisection search and one-dimensional search algorithms to jointly optimize blocklength, transmit power and UAV flying height for maximizing the energy-efficiency (EE) of UAV. Finally, Monte-Carlo simulations are provided to verify our analytical results.

Original languageBritish English
Pages (from-to)4471-4476
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Issue number4
StatePublished - 1 Apr 2022


  • Block error ratio (BLER)
  • short-packet communications
  • ultra-reliable and low-latency com- munications (URLLC)
  • unmanned-aerial-vehicle (UAV)


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