Reduction of the Amount of Channel State Information Feedback in MIMO-OFDM Eigenbeam-Space Division Multiplexing Systems

2006 ◽  
Author(s):  
Yusuke Ohwatari ◽  
Bui Phu ◽  
Yasutaka Ogawa ◽  
Toshihiko Nishimura ◽  
Takeo Ohgane
Keyword(s):  
Channel State Information ◽  
Information Feedback ◽  
Channel State ◽  
State Information ◽  
Space Division Multiplexing ◽  
Space Division ◽  
Mimo Ofdm ◽  
Multiplexing Systems ◽  
Channel State Information Feedback

A channel state information feedback method for massive MIMO-OFDM

2013 ◽  
Vol 15 (4) ◽  
pp. 352-361 ◽  
Author(s):  
Riichi Kudo ◽  
Simon M. D. Armour ◽  
Joe P. McGeehan ◽  
Masato Mizoguchi
Keyword(s):  
Channel State Information ◽  
Massive Mimo ◽  
Information Feedback ◽  
Channel State ◽  
State Information ◽  
Mimo Ofdm ◽  
Feedback Method ◽  
Channel State Information Feedback

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

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Xing Li ◽  
Hui Zhao ◽  
Long Zhao ◽  
Wenxiu Zhao ◽  
Senyao Zheng
Keyword(s):  
Channel State Information ◽  
Mimo System ◽  
Reference Signal ◽  
Base Station ◽  
Information Feedback ◽  
Transmission Scheme ◽  
Channel State ◽  
State Information ◽  
3D Mimo ◽  
Channel State Information Feedback

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) transmission mode, 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 information-reference signal (CSI-RS), where the CSI-RS is precoded with 3D beamforming vectors and composed of two components: long-term 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 3D MIMO 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 3D MIMO system achieves a better tradeoff between resource overhead and throughput performance.

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