Transmission Scheme for 2D Antenna Array MIMO Systems with Limited Feedback

  • Authors:
  • Yuefeng Peng;Wei Yang;Yuan Zhu;Xiaogang Chen

  • Affiliations:
  • School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing , China 100044 and Standards and Advanced Technology Division, Mobile and Communications Group, Intel Corpora ...;National Mobile Communications Research Laboratory, Southeast University, Nanjing , China 210096;Standards and Advanced Technology Division, Mobile and Communications Group, Intel Corporation, Beijing , China 100190;Standards and Advanced Technology Division, Mobile and Communications Group, Intel Corporation, Beijing , China 100190

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2014

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Abstract

Three-dimensional (3D) multiple-input multiple-output (MIMO) systems exploit spatial richness and provide another degree of freedom to transmit signals and eliminate spatial interference. Currently, however, there is no 3D codebook for two-dimensional (2D) antenna array MIMO systems with limited feedback. In this paper, based on the existing 2D codebook, we present a limited feedback and transmission scheme for 2D antenna array MIMO systems. In this scheme, the mobile station (MS) has imperfect channel knowledge, and the base station (BS) only acquires partial information relating the channel instantiation. MS must feed back two channel state information (CSI) instances, i.e., the horizontal and vertical CSIs. After receiving the two CSI instances, the BS interpolates a new vertical precoding vector using the vertical CSI. Then, the BS re-constructs a 3D beamforming vector using horizontal and vertical precoding vectors and compensates the reported horizontal channel quality indicator. System level simulation is employed, and the simulation results show that the proposed method improves the system spectral efficiency and the cell-edge SE significantly.