Polarization diversity system for mobile communications with adaptive configuration of the radiation characteristics

摘要

The base station includes two antenna units (AE1,AE2) with different polarisations. Each unit has a duplexer (e.g. DX1) connected to a channel separation unit (CSU1) for the reception branch and a channel combination unit (CAU1) for the transmission branch. A control unit (SE) assigns the transmission signals (ss) to the antenna units according to a weighting which is correlated with the reception signals (es). The transmission signals of the two antenna units are pref. linearly cross-polarised or circularly polarised in opposite directions.