Geran Evolution: Voice Capacity Boosted by Downlink Dual Antenna Interference Cancellation

Dual antenna interference cancellation (DAIC) recently introduced by 3 GPP standardization as a natural evolution step of its predecessor single antenna interference cancellation (SAIC) to further improve the spectral efficiency in GERAN networks is based on the enhancement of the SAIC inherent downlink advanced receiver performance (DARP) feature by receive diversity. In this study focus has been set on a proper and efficient modelling of DAIC in terms of link-to-system level simulator interface (LSLI). A novel memory saving approach for the design of LSLI suggests a lower and upper bound for the dominant interference ratio (DIR) metric to be used in system level simulations. Using the new approach system level simulations have been performed showing roughly three to four-fold capacity gain w.r.t. today´s conventional AMR networks and a gain of factor two compared to deployments with 100% SAIC penetration.