name: XPR
full_form: Cross-Polarization ratio of the channel
context: Step 9: Generate the cross polarization power ratios Generate the cross polarization power ratios (XPR) ï«ï for each ray m of each cluster n. XPR is log-Normal distributed. Draw XPR values as , (7.5-21) where is Gaussian distributed with ï and from Table 7.5-6 The outcome of Steps 1-9 shall be identical for all the links from co-sited sectors to a UT. Coefficient generation: Step 10: Draw initial random phases Draw random initial phase for each ray m of each cluster n and for four different polarisation combinations (Î¸Î¸, Î¸Ï, ÏÎ¸, ÏÏ). The distribution for initial phases is uniform within (-ï°ï¬ï°). In the LOS case, draw also a random initial phase for both Î¸Î¸ and ÏÏ polarisations. Step 11: Generate channel coefficients for each cluster n and each receiver and transmitter element pair u, s. The method described below is used at least for drop-based evaluations irrespective of UT speeds. Relevant cases for drop-based evaluations are: - Case 1: For low complexity evaluations - Case 2: To
description: The Cross-Polarization Ratio (XPR) is a parameter used in the fast fading model to describe the polarization characteristics of the channel. It represents the ratio of power between co-polarized and cross-polarized signals.
explanation: Based on the context from 3GPP TS 38.900, XPR is described as a log-Normal distributed parameter used in generating channel coefficients for each cluster and receiver-transmitter element pair. This indicates that XPR is an attribute of the network operation, making it a Parameter.
section_title: 7.5Fast fading model
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