Modeling the Multipath Cross-Polarization Ratio for 5-80-GHz Radio Links

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Abstract

In this paper, we parameterize an excess loss-based multipath component (MPC) cross-polarization ratio (XPR) model in indoor and outdoor environments for above-5-GHz frequency bands. The results are based on 35 measurement campaigns in several frequency bands ranging from 5 to 80 GHz. A conventional XPR model of an MPC assuming a constant mean value fits our measurements very poorly and moreover overestimates the depolarization effect. Our measurements revealed a clear trend that the MPC XPR is inversely proportional to the excess loss in reference to the free-space path loss. The model is physically sound as a higher loss is attributed to more lossy interactions or to a greater number of interactions with objects, leading to a greater chance of depolarization. The measurements furthermore showed that the MPC XPR is not strongly frequency or environment dependent. In our MPC XPR model, an MPC with zero-dB excess loss has a mean XPR of 27 dB. The mean XPR decreases half-a-dB as the excess loss increases by every dB and the standard deviation around the mean is 7 dB. The model is applicable to existing channel models to reproduce realistic MPC XPRs for the above 5-GHz radio links.

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Original languageEnglish
Pages (from-to)4768-4778
Number of pages11
JournalIEEE Transactions on Wireless Communications
Volume18
Issue number10
Publication statusPublished - Oct 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • Above-6 GHz, sub-6 GHz, geometry-based stochastic channel model (GSCM), channel models, cross-polarization ratio (XPR), maximum likelihood estimation, measurement, millimeter-wave, multipath channels, multipath component (MPC), radio propagation, CHANNEL MODEL

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