Requirements of Millimeter-Wave-Band Transmitter for Massive MIMO Base Station

This paper presents requirements of Massive MIMO transmitter operating on millimeter wave bands. We mainly discuss the requirements for equipment and circuit components. It is revealed from the requirements of equipment that the Massive MIMO transmitter must attain low profile and low power consumption for installing small cell. According to the requirements, circuit component technologies are presented which are the integrated front-end module of antenna and filter, and the power amplifier employing linearizer. This paper also shows our research activities regarding the Massive MIMO transmitter.