Non-planar Antenna Array Structures for mMIMO
摘要
As discussed in Chap. 4 , the antenna elements at the BS can be configured in a number of ways, resulting in narrower beams to reduce MU interference. A comparison of different 2D array structures in MU-mMIMO is presented in Mahmood et l. (2D antenna array structures for hybrid massive MIMO precoding, in Proceedings of the IEEE Global Communications Conference (GLOBECOM), Taipei, Taiwan, Dec. 7–11 (2020) and Massive-MIMO hybrid precoder design using few-bit DACs for 2D antenna array structures, in Proceedings of the IEEE International Conference on Communications (ICC), Montreal, Canada, Jun 14–23 (2021)), showing higher spectral and energy efficiencies of uniform rectangular array (URA) and concentric circular array (CCA) than uniform linear array (ULA) and uniform circular array (UCA).