Multi-beam massive MIMO using beam selection with only amplitude control

Massive MIMO transmission has been attracted much attention as one of key technologies in next-generation mobile communication system, because it enables improvement in service area and interference mitigation by simple signal processing. Multi-beam massive MIMO configuration has proposed that utilizes the beam selection in analog part and blind algorithm such as constant modulus algorithm (CMA) which does not need channel sate information (CSI) is applied in digital part. In this paper, to achieve the further higher transmission rate, we propose beam selection method with only amplitude information regarding the multi-beams.