Use of cell-site diversity to mitigate co-channel interference in 10-66 GHz broadband fixed wireless access networks

In this paper, CSD has been considered as an effective technique to reduce the downstream intersystem and/or intrasystem CCI of BFWA networks operating in the 10-66 GHz frequency range. A physical propagation model has been adopted for the rain fading channel modeling. The interference analysis has been carried out based on the newly defined probability AIP. CIRDG has been proposed as a useful figure of merit for BFWA networks, operating under rain fades, and used here as an interference reduction measure. Moreover, an analytical physical propagation model for the calculation of CIRDG has been presented and numerically tested. The proposed model is flexible and can be applied to any location all over the world since it is based on the rainmaps provided by ITU-R. The entire analysis is compatible with the WiMAX related standards and can be useful for spectrum management and coordination studies.