Beamformed Radio Link Capacity under Positioning Uncertainty

Jukka Talvitie, Toni Levanen, Mike Koivisto, Tero Ihalainen, Kari Pajukoski, Mikko Valkama

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
10 Downloads (Pure)

Abstract

Beamforming is one of the key technologies for achieving the high performance criteria in various modern and future wireless communications systems, in particular at the millimeter wave frequencies. In order to avoid or reduce the large signaling overhead and corresponding latency related to beam-training procedures, location-based beamforming utilizing available position information has been proposed. In this paper, by using the available position probability density function of a receiving device, we derive and analyze the capacity of a beamformed radio link, without and with beam-sweeping based beam training. Through the analysis, we show that by adjusting the beamforming and/or beam-training parameters appropriately, the radio link capacity can be optimized with respect to the prevailing positioning accuracy, and thus optimal utilization of radio resources is achieved with minimal radio access latency.

Original languageEnglish
Pages (from-to)16235-16240
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Volume69
Issue number12
DOIs
Publication statusPublished - 2020
Publication typeA1 Journal article-refereed

Keywords

  • Antenna arrays
  • Array signal processing
  • beam-training
  • beamforming
  • Channel capacity
  • channel capacity
  • location-awareness
  • mmWave
  • positioning
  • Probability density function
  • Radio links
  • Training
  • Uncertainty
  • wireless networks

Publication forum classification

  • Publication forum level 3

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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