28 GHz millimeter-wave ultrawideband small-scale fading models in wireless channels

Mathew K. Samimi, George R. Maccartney, Shu Sun, Theodore S. Rappaport

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper presents small-scale fading measurements for 28 GHz outdoor millimeter-wave ultrawideband channels using directional horn antennas at the transmitter and receiver. Power delay profiles were measured at half-wavelength spatial increments over a local area (33 wavelengths) on a linear track in two orthogonal receiver directions in a typical base-to-mobile scenario with fixed transmitter and receiver antenna beam pointing directions. The voltage path amplitudes are shown to follow a Rician distribution, with K-factor ranging from 9 - 15 dB and 5 - 8 dB in line of sight (LOS) and non-line of sight (NLOS) for a vertical-to-vertical co- polarized antenna scenario, respectively, and from 3 - 7 dB in both LOS and NLOS vertical-to- horizontal cross-polarized antenna scenario. The average spatial autocorrelation functions of individual multipath components reveal that signal amplitudes reach a correlation of 0 after 2 and 5 wavelengths in LOS and NLOS co-polarized V-V antenna scenarios. The models provided are useful for recreating path gain statistics of millimeter- wave wideband channel impulse responses over local areas, for the study of multi-element antenna simulations and channel estimation algorithms.

Original languageEnglish (US)
Title of host publication2016 IEEE 83rd Vehicular Technology Conference, VTC Spring 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509016983
StatePublished - Jul 5 2016
Event83rd IEEE Vehicular Technology Conference, VTC Spring 2016 - Nanjing, China
Duration: May 15 2016May 18 2016

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Other83rd IEEE Vehicular Technology Conference, VTC Spring 2016


  • 28 GHz
  • 5G
  • Linear track
  • Millimeter-wave
  • Multipath
  • Rician fading
  • Smallscale fading
  • Spatial autocorrelation
  • Ultrawideband

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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