SEAMCAT Handbook (pdf) - Cept

Closest interferer:The influence of the closest interferer can be estimated by having a distance d itvr following a Rayleigh distributionR ( ) as defined in Annex 8 and where the parameter is related to the density of transmitterswhere: 12 dens itactiveactivetxdens dens p activity ( time)ititititFigure 139: Interfering link/It‐Vr path/Relative location – Closest interferer dialog boxpage Description Symbol Type Unit CommentsMode: Closest interfererNonePath azimuth D or S Deg Horizontal angle for the location of the Itrespect to the Vr. If constant, the It’s locationwill be on a straight line. If not, the location ofthe It will be on an angular area.Interferers densityThe distance between the Victim receiver andthe Interfering transmitter follows a Rayleighdistribution, where the standard deviation isgiven by . See A.10.2 for information on theinput parameter.Table 30: Interfering Link/It‐Vr path/Closest interferer optionCorrelation case: position between two pair of transmitter and receiver is defined using Cartesian coordinates:Choose between different correlation modes: ItVr; ItWt; WrWt; WrVr.This case deals with the situation where the victim system and the interfering system are geographically correlated(e.g. co‐located or constantly spaced base stations).This correlation is assumed to be only between one element (Vr or Wt) of the victim system and one element (It orWr) of the interfering system.A trial (if the distance is not constant) of the distances and angles between the two correlated elements is made (e.g. wr vr , d wr vr). The knowledge of it‐>wr , d it wr, vr wt , d vr wt enables to derive the missing coordinates (e.g. it vr,d it vr).123