Summary
International Symposium on Antennas and Propagation
2015
Session Number:S2.7
Session:
Number:S2.7.5
Multi-beam Massive MIMO Using Analog Beamforming and DBF Based Blind Algorithm
Kentaro Nishimori, Takefumi Hiraguri, Tomohiro Seki, Hiroyoshi Yamada,
pp.-
Publication Date:2015/11/9
Online ISSN:2188-5079
Summary:
Massive MIMO enables the improvement on the transmission rate without increasing the burden on the signal processing by employing a large number of antennas at a base station (BS). Channel state information (CSI) feedback scheme from terminal stations to BS gives a very large overhead when considering massive MIMO and implicit beamforming (IBF) with the calibration technique as the countermeasures are introduced. However, it is reported that CSI estimation itself has a large overhead when considering massive MIMO. In this paper, we propose analog-digital hybrid configuration using analog multi-beams with dielectric line array and lens and blind algorithm called Constant Modulus Algorithm (CMA) which does not need the CSI estimation. Via a computer simulation, the effectiveness of proposed configuration is verified.