Enabling 3D MIMO in LTE-Advanced — From the CSI acquisition perspective
- Resource Type
- Conference
- Authors
- Zhang, Yu; Wei, Chao; Zheng, Ruiming; Wang, Neng; Hou, Jilei
- Source
- 2015 International Conference on Computing, Networking and Communications (ICNC) Computing, Networking and Communications (ICNC), 2015 International Conference on. :42-46 Feb, 2015
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Signal Processing and Analysis
MIMO
Throughput
Arrays
Ports (Computers)
Antenna arrays
Long Term Evolution
- Language
Traditional multiple-input multiple-output (MIMO) systems mostly consider only the azimuth dimension of the three-dimensional (3D) multipath propagation. Recently, there has been interests in extending MIMO techniques to exploit the elevation dimension in addition to the azimuth dimension. In this paper we developed a rank-restricted representation of MIMO channels. Based on the cascading structure of the representation, we propose a two-stage precoding framework for 3D MIMO processing. Several design options under this framework are discussed. System-level performance evaluation is conducted for various antenna configurations. Simulation results show that significant cell-edge and median user throughput gain can be achieved compared to the legacy MIMO system.