An Empirical Air-to-Ground Channel Model Based on Passive Measurements in LTE

Xuesong Cai, José Rodríguez-Piñeiro, Xuefeng Yin, Nanxin Wang, Bo Ai, Gert F. Pedersen, Antonio Pérez Yuste

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10 Citations (Scopus)
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Abstract

In this paper, a recently conducted measurement campaign for unmanned-aerial-vehicle channels is introduced. The downlink signals of an in-service long-time-evolution network, which is deployed in a suburban scenario were acquired. Five horizontal and five vertical flight routes were considered. The channel impulse responses (CIRs) are extracted from the received data by exploiting the cell-specific signals, and the underlying physical propagation mechanisms are interpreted by exploiting the propagation graph modeling approach. Based on the CIRs, the parameters of multipath components are estimated by using a high-resolution algorithm derived according to the space-alternating generalized expectation-maximization (SAGE) principle. Based on the SAGE results, channel characteristics including the path loss, shadow fading, fast fading, delay spread, and Doppler frequency spread are thoroughly investigated for different heights and horizontal distances, which constitute a stochastic model.

Original languageEnglish
Article number8576578
JournalIEEE Transactions on Vehicular Technology
Volume68
Issue number2
Pages (from-to)1140-1154
Number of pages15
ISSN0018-9545
DOIs
Publication statusPublished - Feb 2019

Keywords

  • Antenna measurements
  • Communication channels
  • Delays
  • Fading channels
  • Frequency measurement
  • Long Term Evolution
  • Narrowband
  • Unmanned aerial vehicle
  • air-to-ground channel
  • channel dispersions
  • fading behaviours
  • propagation graph
  • fading behaviors

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