Stability properties of a MIMO data flow controller

The increasing demand for data in mobile applications has created a need for better communications systems. To satisfy this growing data demand next generation wireless systems are planned to use millimetre wave carrier frequencies. At these frequencies, radio shadowing is severe. To compensate for shadowing, incoming data flows must therefore be split and sent over several radio interfaces, that may have different delay properties. This paper analyses the stability properties of a MIMO data splitter that controls the delay skew between the data paths. The stability analysis is performed using IQC stability theory.