Abstract: The present invention is designed to measure interference with high accuracy in future systems that do not rely on CRSs. A base station apparatus has a determining section (401) that determines the resources to allocate desired signal measurement reference signals (CSI-RSs) and interference estimation reference signals to, and a reference signal generating section (405) that applies scrambling sequences and generates the interference estimation reference signal, and the scrambling sequences are controlled such that varying scrambling sequences are applied to the interference estimation reference signals between a plurality of transmission points or transmission point groups.