A Precoding Algorithm Based on Max-SNR in Massive MIMO System by Yuhua Wu

“…In order to obtain higher data transmission speed and greater array gain，a precoding algorithm based on max-SNR in massive MIMO system was proposed.The basic method of this algorithm was following.Firstly，the base station obtained MMSE channel estimation by received uplink pilot sequences，then the base station transmited downlink data to users after precoding.Terminal users derived the optimal precoding matrix by resolving a Rayleigh entropy optimization problem based on the received SNR.Simulation results show that the performance of the proposed algorithm is better than SVD algorithm，especially when the number of transmit antennas is large，the proposed algorithm is valuable in massive MIMO systems in the future.…”
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Differential detection scheme for distributed MIMO systems in fast fading channel by Dong-dong DOU, Jun-bo LIU, Da-ming WANG, Zhao-xun LI

“…In the fast fading distributed MIMO system,it is difficult to keep the channel fading coefficient unchanged in adjacent space-time blocks due to the rapid changed state information,which leads to the traditional distributed MIMO differential detection scheme is not suitable any.Aiming at this matter,an improved differential detection scheme was proposed.By recombining space-time codes which were differential modulated by phase,this differential detection scheme reduced the influence from fast fading channels at the cost of larger processing delay and additional transmission power.Theoretical analysis and some computer simulation results show that this scheme can improve the BER performance remarkably in fast fading channels compared with the existing the conventional differential space time detection.…”
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Pilot allocation based on user location information in massive MIMO systems by Jia-liang DU, Lin YANG, Xin-lei SONG

Subjects: “…massive MIMO…”
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Property Analysis of MIMO-Based Missile-Borne Forward-Looking SAR by Yachao Li, Ziqiang Meng, Shengqi Zhu, Yinghui Quan, Mengdao Xing, Zheng Bao

“…As a special multiple-input multiple-output (MIMO) radar networking mode, missile-borne forward-looking synthetic aperture radar (MFL-SAR) has many potential applications. …”
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Outdoor Massive MIMO Testbed With Directional Beams: Design, Implementation, and Validation by Spandan Bisoyi, Pasupuleti Muralimohan, Harish Kumar Dureppagari, Pavan Reddy Manne, Kiran Kuchi

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Dynamic pilot assignment in massive MIMO system based on user classification by Jinyan ZHANG, Feng JIN, Lixin YIN

Subjects: “…massive MIMO…”
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An Improved Multicell MMSE Channel Estimation in a Massive MIMO System by Ke Li, Xiaoqin Song, M. Omair Ahmad, M. N. S. Swamy

“…Massive MIMO is a promising technology to improve both the spectrum efficiency and the energy efficiency. …”
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Performance Analysis on MU-MIMO Field Test in TD-LTE System by Jinghua Kuang, Ziwei Long, Wei Deng

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Metrics and Methods for Evaluation of Over-The-Air Performance of MIMO User Equipment by Yifei Feng, Werner L. Schroeder, Christoph von Gagern, Adam Tankielun, Thomas Kaiser

“…Commercial User Equipment (UE) testing and certification has become more complex for state-of-the-art mobile communication standards such as 3rd Generation Partnership Project (3GPP) Long-Term Evolution (LTE) due to the extensive use of Multiple Input-Multiple Output (MIMO) transmission techniques. The variety of different MIMO operating modes and the almost unlimited choice of possible multipath channel conditions under which UE performance may be evaluated are not accounted for by established Single Input-Single Output (SISO) Over-The-Air (OTA) performance metrics like Total Isotropic Sensitivity (TIS) and Total Radiated Power (TRP). …”
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Correction of Channel Imbalance for MIMO SAR Using Stepped-Frequency Chirps by Xiulian Luo, Yunkai Deng, Robert Wang, Lei Guo, Mingjiang Wang

“…To simultaneously achieve two-dimensional high resolution and wide swath in synthetic aperture radar (SAR), azimuth MIMO structure combined with stepped-frequency chirp signals was developed via splitting the antenna into N subapertures. …”
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Tangential Human Posture Recognition with Sequential Images Based on MIMO Radar by Chuanwei DING, Zhilin LIU, Li ZHANG, Heng ZHAO, Qing ZHOU, Hong HONG, Xiaohua ZHU

Subjects: “…mimo radar…”
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Optimal Tracking Performance of MIMO Discrete-Time Systems with Network Parameters by Chao-Yang Chen, Weihua Gui, Zhi-Hong Guan, Shaowu Zhou, Cailun Huang

“…The optimal regulation properties of multi-input and multioutput (MIMO) discrete-time networked control systems (NCSs), over additive white Gaussian noise (AWGN) fading channels, based on state space representation, are investigated. …”
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An Investigation of Self-Interference Reduction Strategy in a Spatially Correlated MIMO Channel by Rosdiadee Nordin

“…One of the efficient ways to transmit high data rate is by employing a multiple-input multiple-output (MIMO) transmission. One of the MIMO schemes, known as spatial multiplexing (SM), relies on the linear independence data streams from different transmit antennas to exploit the capacity from the fading channels. …”
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MIMO Channel Model with Propagation Mechanism and the Properties of Correlation and Eigenvalue in Mobile Environments by Yuuki Kanemiyo, Youhei Tsukamoto, Hiroaki Nakabayashi, Shigeru Kozono

“…This paper described a spatial correlation and eigenvalue in a multiple-input multiple-output (MIMO) channel. A MIMO channel model with a multipath propagation mechanism was proposed and showed the channel matrix. …”
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Hybrid precoding based on distributed partially-connected structure for multiuser massive MIMO by Lei ZHANG, Qin WANG

Subjects: “…massive MIMO…”
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The key technologies of millimeter wave MIMO communication system in space information network by Xin-ying MA, Zhi CHEN, Si MA, Jun FANG

“…With the rapid development of space information network and the increasing expansion of mankind activity,the requirements of communication quality become higher between mobile satellites and earth stations.In order to meet the demands of high data rate,large capacity and broadband real-time communication,applying millimeter wave frequency band to mobile satellite communication system has attracted great attention.Beamforming,tracking and channel estimation were introduced in millimeter wave MIMO system to fully understand the challenges of space information network which will face in the future.…”
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Progressive linear precoder design for MIMO ARQ retransmissions with channel estimation error by SHI Zhi-hua, ZHAO Chun-ming, YANG Yi-jin, ZHOU Peng

Subjects: “…MIMO…”
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Res-DNN based signal detection algorithm for end-to-end MIMO systems by Guoquan LI, Yonghai XU, Jinzhao LIN, Zhengwen HUANG

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Robust angle estimation method for noncircular targets in MIMO radar with mutual coupling by Xianpeng WANG, Yuehao GUO, Mengxing HUANG, Chong SHEN, Chunjie CAO, Wenlong FENG

“…A robust angle estimation method for noncircular targets based on unitary tensor decomposition with mutual coupling in multiple-input multiple-output (MIMO) radar was proposed.Firstly,utilizing the banded symmetric Toeplitz structure of the mutual coupling matrix to eliminate the influence of unknown mutual coupling in tensor field.Then a special augmented tensor was constructed to capture the no circularity and its inherent tensor multidimensional structure of noncircular signals.And taking advantage of the centro-Hermitian characteristic of the augmented tensor to transform the sub-tensor into real-values tensor by the unitary transformation.Finally,the signal subspace estimation based on tensor was obtained by taking advantage of the higher-order singular value decomposition (HOSVD) technology,and then the direction-of-departure (DoD) and direction-of-arrival (DoA) estimation was obtained by utilizing the real-values subspace technology.Due to the consideration of both the noncircularity and multidimensional structure,the proposed algorithm has better recognition performance than the existing angle estimation methods.At the same time,the proposed algorithm only requires real-valued operations and has lower computational complexity.Simulation experiments verify the effectiveness and superiority of the proposed algorithm.…”
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Dynamic Conjugate Gradient Unfolding for Symbol Detection in Time-Varying Massive MIMO by Toluwaleke Olutayo, Benoit Champagne

Subjects: “…Massive MIMO (M-MIMO)…”
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