This paper provides an overview of research challenges and opportunities on mm-wave communication in the fifth generation (5G) mobile broadband networks. More specifically, different challenges, i.e. spectrum, propagation channel, cost and energy eff

The ever growing traffic explosion in mobile communications has recently drawn increased attention to the large amount of underutilized spectrum in the millimeter-wave frequency bands as a potentially viable solution for achieving tens to h

Thanks to the small wavelength at millimeter wave (mmWave) frequency, it is promising to combine massive multiple-input and multiple-output (MIMO) with mmWave. MmWave massive MIMO will differ the conventional massive MIMO, due to the differen