Mutual interference of IMT-2000 networks

We consider the adjacent channel interference of IMT-2000 networks. The results are shown for the UTRA-FDD mode of the IMT-2000 standard but can be applied to any other mode. The interference is described by an analytical model which includes all interference sources in a cluster of 7 cells. This interference calculation is used to describe the capacity loss caused by neighboring IMT-2000 network operators. The capacity loss is calculated as a function of the location distance of the base stations and the number of users. The simulations show the well known result that the coordination of the positioning of the networks is a key task to improve the network performance and to utilize the expensive spectrum efficiently. Additionally, we show that baseband filtering has a big impact on the capacity. We show this effect by comparing the cdma2000 against the UMTS UTRA-FDD standard.