Beamforming and reflector antenna approach for silicon-based Ka-band massive MIMO base stations

Presenting a combination of hierarchical beamforming and reflector antennas to cope with the degradations faced at higher frequencies. The overall objective is to develop a focal line/focal plane array (FLA/FPA) base station system to enable mm-Wave for 5G communications in urban outdoor environments

Single shot DoA estimation for large-array base station systems in multi-user environments

The next generation of wireless communications has to deal with the demand for higher data rates and the increase of subscribers. A feasible approach to cope with these challenges is to utilize millimeter waves (mmWaves). To provide at these high frequencies a sufficient high signal to noise ratio (SNR) narrow beam antenna systems can be used. These systems require knowledge about the direction of arrival (DoA) to steer their beams towards the optimal direction. The determination of the DoA can become time consuming for large areas where a single narrow beam can cover only a small spot. Dealing with this challenge, the single shot DoA enables to find the optimal direction within an instant of time for multiple users. This paper introduces the single shot DoA method and shows its functionality based on conducted simulations