Neural Network L1 Adaptive Control of MIMO Systems with Nonlinear Uncertainty by Hong-tao Zhen, Xiao-hui Qi, Jie Li, Qing-min Tian

“…An indirect adaptive controller is developed for a class of multiple-input multiple-output (MIMO) nonlinear systems with unknown uncertainties. …”
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Antenna Array Design in MIMO Radar Using NSK Polynomial Factorization Algorithm by Shuainan Gu, Ke Li, Xiukun Ren, Na-e Zheng

“…Simulations confirm the wide use of the proposed algorithm in MIMO radar antenna array design.…”
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A Resource Allocation Scbeme Based on User's QoS in MIMO Relay System by Tao Guo, Youming Li, Peng Lei, Biao Ji, Chengcheng Li

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Energy-efficient resource allocation algorithm for massive MIMO OFDMA downlink system by Ying HU, Bao-feng JI, Yong-ming HUANG, Fei YU, Lv-xi YANG

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Probabilistic Behavior Analysis of MIMO Fading Channels under Geometric Mean Decomposition by Ping-Heng Kuo, Pang-An Ting

“…Geometric mean decomposition (GMD) has been proposed as a method to realize multiple spatial links with identical gains that are intrinsic to a MIMO channel. In order to simplify system design and implementation based on knowledge regarding probability behavior of MIMO-GMD schemes, the main objective of this paper is to statistically characterize the link gains and channel capacities that can be provided via GMD. …”
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Low complexity hybrid precoding method in mmWave massive MIMO system by Jianwei XIANG, Xiulan YU, Xiaorong JING

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Variable Subarray Beamforming in Low Earth Orbit Satellite Feeder Link MIMO by Koyo Tategami, Daisuke Goto, Kiyohiko Itokawa, Fumihiro Yamashita

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Design and Implementation of High Frequency Broadband Gbit/s System Based on MIMO-OFDM by Junyu Peng, Sunzeng Cai, Zhenghang Zhu, Jing Xu, Ting Zhou

“…Spectrum bands below 6 GHz have been crowded currently,but demand for high speed wireless communication in low speed environment is growing.Research and development of high-frequency wireless communication system is an important way to alleviate this problem.System structure for high frequency broadband communication was proposed.Physical layer key algorithm such as synchronization,channel estimation and MIMO detection was described briefly.The high frequency broadband Gbit/s system based on MIMO-OFDM was implemented on FPGA based hardware platform.Bandwidth and data rate of the system was tested in indoor environment.Test result shows that performance of the system conforms to design requirements.…”
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Hybrid precoding method for mmWave MIMO systems based on limited feedback by Ruonan YOU, Peng PAN, Dan ZHANG, Haiquan WANG

“…A hybrid precoding algorithm for millimeter wave (mmWave) MIMO systems without knowledge of channel state information at the transmitter was proposed based on the limited feedback.Specifically, the joint optimization problem of analog precoding and digital precoding was firstly separated into two independent optimization problems, which correspond to the analog precoding and digital precoding respectively.Based on this analog precoding codebook, the best precoding matrix was selected by analog precoding in the designed analog precoding codebook.Secondly, according to the obtained analog precoding matrix, the digital precoding matrix was obtained through the least square method, and then, the codeword closest to it in the random vector quantization codebook was selected as the feedback digital precoding matrix.Finally, the receiver feeds the index values of the analog and digital precoding matrices back to the transmitter.Simulation results show that the proposed algorithm can achieve better balance between complexity and performance.…”
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Degrees of freedom of MIMO interference channel with distributed space-time interference alignment by Tengda YING, Wenjiang FENG, Weiheng JIANG, Guoling LIU, Chunan YAO, Taotao BAO

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Pilot Design for Sparse Channel Estimation in Large-Scale MIMO-OFDM System by Chao Xu, Jianhua Zhang, Mengmeng Liu, Changchuan Yin

“…The pilot design problem in large-scale multi-input-multioutput orthogonal frequency division multiplexing (MIMO-OFDM) system is investigated from the perspective of compressed sensing (CS). …”
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Self-Isolated Surface-Mountable MIMO Antenna for FR1 Band Communications by Arpita Patel, Abdulkarem H. M. Almawgani, Trushit Upadhyaya, Vishal Sorathia, Vipul Dabhi, Seif Shebl

“…The proposed surface-mountable self-isolated MIMO antenna covers n78 and n79 5G frequency bands. …”
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Power allocation under per-antenna power constraints in multiuser MIMO systems by Sheng-qian HAN, Chen-yang YANG

Subjects: “…multiuser MIMO systems…”
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Coordinated air-ground scheduling for UAV-assisted cell-free massive MIMO by Danhao DENG, Chaowei WANG, Fan JIANG, Weidong WANG

Subjects: “…cell-free massive MIMO…”
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Hybrid precoding method for mmWave massive MIMO systems based on LFM by Haoyi CHEN, Yifan DING, Ying CHENG

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Approach towards the achievable sum rates capacity of Gaussian MIMO broadcast channels by PAN Cheng-kang1, CAI Yue-ming1, XU You-yun1, ZHANG Hua-ping2

Subjects: “…MIMO…”
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AOA, Delay, and Complex Propagation Factor Estimation for the Monostatic MIMO Radar System by Saleh O. Al-Jazzar, Sami Aldalahmeh

“…These estimates can be used as initializations for other MIMO radar methods, such as the maximum likelihood algorithm. …”
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Switching MIMO System with Adaptive OFDM Modulation for Indoor Visible Light Communication by Xinyue Guo, Keer Zhang, Xufa Huang

“…In this paper, we propose and experimentally demonstrate a switching multiple input and multiple output (MIMO) system combining with adaptive orthogonal frequency division multiplexing (OFDM) modulation for high-speed indoor visible light communications. …”
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On the MIMO Capacity for Distributed System under Composite Rayleigh/Rician Fading and Shadowing by Santiago González-Aurioles, J. L. Padilla, P. Padilla, Juan F. Valenzuela-Valdés, Juan C. Gonzalez-Macias

“…This type of fading is proposed for massive MIMO by others and our results open the door to emulate massive MIMO on a reverberation chamber.…”
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Joint estimation method of target number and orientation parameters for FDA-MIMO radar by Helin SUN, Hongyuan GAO, Yanan DU, Jianhua CHENG, Yapeng LIU

“…To address the problem that the frequency diverse array MIMO (FDA-MIMO) radar requires a priori information on the target number when locating multiple targets and the multidimensional parameter estimation consumes a large amount of computation, a joint estimation method was proposed.The angle and distance dependence of the FDA-MIMO were utilized to transform the estimation of target number and orientation parameters into a multimodal optimization problem on the spatial spectrum, and a density-based multimodal differential evolution algorithm was designed to solve it, which reduced the computational load and did not require a separate target number estimation algorithm.Simulation results show that the proposed method outperformed the existing methods in estimating the target number and orientation parameters.It overcomes the application limitations of the existing orientation parameter estimation methods and can obtain optimal estimation results without quantization error.…”
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