Censored Multipath Component Cross-Polarization Ratio Modeling

Aki Karttunen, Carl Gustafson, Andreas F. Molisch, Jan Järveläinen, Katsuyuki Haneda

Research output: Contribution to journalLetterScientificpeer-review

7 Citations (Scopus)

Abstract

In wireless channel measurements, the relatively weak cross-polarized multipath components (MPCs) are typically severely affected by the measurement noise level. As shown in this letter, the typical cross-polarization ratio (XPR) model parameter estimation, which ignores the existence of censored samples, may lead to significant errors. We demonstrate how to achieve accurate parameter estimates with a maximum likelihood estimator that properly takes into account both the measured XPRs and the censored samples. Also, a new XPR model is presented in which the average XPR is modeled as a function of the MPC excess loss. The new model is shown to be insensitive to the channel measurement noise level. A practical example with measured data in an indoor environment at 60 GHz demonstrates the utility of the approach.
Original languageEnglish
Pages (from-to)82-85
Number of pages4
JournalIEEE WIRELESS COMMUNICATIONS LETTERS
Volume6
Issue number1
Early online date29 Nov 2016
DOIs
Publication statusPublished - Feb 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • millimeter-wave propagation measurements
  • cross-polarization ratio (XPR)
  • maximum likelihood estimation
  • channel characterization and modeling
  • censored data
  • radio propagation

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