ShanghaiTech University Knowledge Management System
CSI feedback with feedforward signaling and adaptive codebook for cellular FDD systems | |
2018 | |
会议录名称 | 24TH EUROPEAN WIRELESS CONFERENCE 2018: WIRELESS FUTURES IN THE ERA OF NETWORK PROGRAMMABILITY, EW 2018 |
页码 | 215-220 |
发表状态 | 已发表 |
摘要 | Multi-antenna base stations (BSs) in cellular systems require channel state information (CSI) of the downlink channel for proper transmit beamforming. In frequency division duplexing (FDD) systems the downlink channel is usually estimated at the user equipment (UE) and then fed back to the BS with a limited number of bits. We instead exploit the partial correlation of the uplink and downlink channels and propose a new CSI reporting procedure that reduces the signaling overhead by splitting it between uplink and downlink. In our procedure the codebook used for the quantization of the downlink channel at the UE is adapted to the uplink channel estimated at the BS: therefore the BS estimates and quantize the uplink channel, then sends to the UE the quantization index, which is used in turn to select the quantization codebook for the downlink channel. The BS reconstructs the downlink channel by either using only the feedback from the UE or merging it with its own knowledge of the "unquantized" uplink channel. Numerical results obtained on the COST 2100 model confirm the correlation among uplink and downlink channels and support the validity of the proposed techniques in balancing the uplink and downlink signaling overhead. © 2018 VDE VERLAG GMBH. |
会议地点 | Catania, Italy |
收录类别 | EI |
出版者 | VDE VERLAG GMBH |
EI入藏号 | 20182905577051 |
EI主题词 | Antennas ; Communication channels (information theory) ; Feedback ; Frequency division multiplexing |
EI分类号 | Information Theory and Signal Processing:716.1 ; Control Systems:731.1 |
原始文献类型 | Conference article (CA) |
文献类型 | 会议论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/29700 |
专题 | 信息科学与技术学院_PI研究组_罗喜良组 信息科学与技术学院_博士生 |
作者单位 | 1.School of Information Science and Technology, ShanghaiTech University, Shanghai, China 2.Department of Information Engineering, University of Padova, Padova, Italy 3.Huawei Technologies, Shanghai, China |
第一作者单位 | 信息科学与技术学院 |
第一作者的第一单位 | 信息科学与技术学院 |
推荐引用方式 GB/T 7714 | Zhang, Xiaoyu,Luo, Xiliang,Tomasin, Stefano,et al. CSI feedback with feedforward signaling and adaptive codebook for cellular FDD systems[C]:VDE VERLAG GMBH,2018:215-220. |
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