Cross-Subcarrier Precoder Design for Massive MIMO-OFDM Downlink

Yuxuan Zhang, An An Lu, Bingyan Liu, Xiqi Gao*, Xiang Gen Xia

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

We propose a cost efficient cross-subcarrier pre-coder design (CSPD) for massive multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) downlink with imperfect channel state information (CSI). To reduce the high computational complexity caused by individual precoder design for each subcarrier, we design transform domain precoding vectors (TDPVs), from which the precoders for a set of subcarriers can be obtained through a transform. The number of TDPVs is much less than that of subcarriers, and the number of total parameters to be designed can be reduced significantly. The main objective is to maximize an upper bound of the ergodic sum-rate by exploiting the a posteriori beam-based statistical channel model. We provide a concave minorizing function of the upper bound of the ergodic sum-rate and then derive the stationary points of a concave quadratic optimization problem with this minorizing function. To reduce the dimension of the matrix inversion in the stationary points, we propose an algorithm by using block coordinate descent (BCD) method with power allocation.

源语言英语
主期刊名2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings
出版商Institute of Electrical and Electronics Engineers Inc.
ISBN(电子版)9798350329285
DOI
出版状态已出版 - 2023
已对外发布
活动98th IEEE Vehicular Technology Conference, VTC 2023-Fall - Hong Kong, 中国
期限: 10 10月 202313 10月 2023

出版系列

姓名IEEE Vehicular Technology Conference
ISSN(印刷版)1550-2252

会议

会议98th IEEE Vehicular Technology Conference, VTC 2023-Fall
国家/地区中国
Hong Kong
时期10/10/2313/10/23

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引用此

Zhang, Y., Lu, A. A., Liu, B., Gao, X., & Xia, X. G. (2023). Cross-Subcarrier Precoder Design for Massive MIMO-OFDM Downlink. 在 2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings (IEEE Vehicular Technology Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTC2023-Fall60731.2023.10333529