Table of Contents
Chinese Journal of Engineering
Volume 2016, Article ID 9821845, 9 pages
http://dx.doi.org/10.1155/2016/9821845
Research Article

Multiuser Beamforming with Limited Feedback for FDD Massive MIMO Systems

Wireless Signal Processing & Network (WSPN) Lab, BUPT, Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing 100876, China

Received 29 September 2015; Accepted 14 February 2016

Academic Editor: Jilei Hou

Copyright © 2016 Senyao Zheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper discusses the multiuser beamforming in FDD massive MIMO systems. It first introduces the feature of FDD massive MIMO systems to implement multiuser beamforming schemes. After that, considering the realistic implementation of multiuser beamforming scheme in FDD massive MIMO systems, it introduces the knowledge of channel quantization. In the main part of the paper, we introduce two traditional multiuser beamforming schemes and analyse their merits and demerits. Based on these, we propose a novel multiuser beamforming scheme to flexibly combine the merits of the traditional beamforming schemes. In the final part of the paper, we give some simulation results to compare the beamforming schemes mentioned in the paper. These simulation results show the superiority of the proposed beamforming scheme.