MmWave Massive MIMO

Millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) refers to wireless communication systems that exploit carrier frequencies around 30~300 GHz spectra with a large number of antennas at transceivers. The widespread use of millimeter wave (mmWave) communications makes it possible to deploy a large number of antennas in a small form factor, which has popularized the use of massive MIMO in 5G and future wireless communications.


MmWave massive MIMO provides significant performance gain by taking advantage of the extremely large bandwidth of mmWave and the large array of massive MIMO. MmWave massive MIMO, however, has several issues to be implemented in practice. Channel estimation in massive MIMO is challenging due to the large dimension of wireless channel. Also, a large number of radio frequency (RF) chains incurs excessive power consumption at a base station. The research topics on mmWave massive MIMO may include, but not limited to, channel estimation, beamforming, and signal processing techniques for power-efficient systems that employ hybrid architectures and low-resolution analog-to-digital converters (ADC) and DACs, etc.