Open AccessPartially connected hybrid precoding design for millimeter wave MIMO systems
Author(s) -
Xinglin Zheng,
Yue Wang,
Wei Liu
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1325/1/012057
Subject(s) - precoding , beamforming , extremely high frequency , mimo , computer science , computational complexity theory , antenna (radio) , transmitter , zero forcing precoding , spectral efficiency , algorithm , electronic engineering , antenna array , topology (electrical circuits) , control theory (sociology) , channel (broadcasting) , mathematics , telecommunications , engineering , control (management) , combinatorics , artificial intelligence
To solve the problem of spectral efficiency and energy efficiency of hybrid precoding in millimeter-wave communication system. This paper considers alternately using the minimization framework to increase beamforming gain. However, such framework because the radio frequency domain phase modulation network are using phase shifters, which result in non-convex constraints, and known solutions suffer from high computational complexity. Before using the alternate minimization architecture, it is proved that the phase angle of the ordered right singular vector of the channel matrix can be used to initialize the analog precoder, and hence, the complicated optimization procedures used to search the near-optimum analog precoding matrix can be avoided. In addition, the antenna array response vectors at the transmitter are not required. The simulation results show that the performance of the proposed algorithm is better than the traditional partial-connected algorithm and the complexity is lower, especially in the case of high signal-to-noise ratio.