Feasibility of Mobile Cellular Communications at Millimeter Wave Frequency

High data rate at high mobile speed will still be an essential requirement for the future 5G mobile cellular system. High frequency bands above 6 GHz are particularly promising for the 5G system because of large signal bandwidths such high frequencies can offer. And it was shown that by using high gain beamforming antennas, the problem of high propagation loss at high frequencies could be compensated almost completely. But, achieving high speed mobile cellular communications with beamforming antennas at such a high frequency is a daunting task and has not been demonstrated until now. In this paper, we describe a testbed built at Samsung Electronics, Korea, with adaptive beamforming antennas at 28 GHz, and demonstrate feasibility of high speed mobile cellular communications.