NDLI: Transmission Scheme with Limited Channel State Information Feedback for 3D MIMO System

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Transmission Scheme with Limited Channel State Information Feedback for 3D MIMO System

Content Provider	Semantic Scholar
Author	Li, Xing Zhao, Hui Zhao, Long Zhao, Wenxiu Zheng, Senyao
Copyright Year	2015
Abstract	Three-dimensional (3D) multiple-input multiple-output (MIMO) system can exploit the spatial degree of freedom in vertical dimension and can significantly improve system performance compared with 2D transmission scheme. However, in the actual frequency division duplex (FDD) transmissionmode, the large overhead of the reference signal and channel state information (CSI) feedback would become a barrier for performance improvement of 3D MIMO system with the significantly increased number of transmit antennas. To deal with these problems, this paper proposes a new transmission scheme of the channel state informationreference signal (CSI-RS), where the CSI-RS is precoded with 3D beamforming vectors and composed of two components: longterm CSI-RS and short-term CSI-RS. For the purpose of conducting efficient transmission in widely used FDD system, we also propose a corresponding limited channel state information feedback scheme. Moreover, multiuser pairing and scheduling criteria based on the design of the CSI-RS are proposed to realize the multiuser transmission. We have investigated multiple options for 3DMIMO codebook scheme and finally adopt the Kronecker product-based codebook (KPC) for precoding operation at the base station (BS). Simulation results demonstrate that our proposed scheme for the 3DMIMO system achieves a better tradeoff between resource overhead and throughput performance.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://downloads.hindawi.com/journals/ijap/2015/849764.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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