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Artykuły w czasopismach na temat „MU mmWave MIMO communications”

Autor: Grafiati

Data publikacji: 6 września 2023

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1

Dilli, Ravilla. "Performance analysis of multi user massive MIMO hybrid beamforming systems at millimeter wave frequency bands." Wireless Networks 27, no. 3 (2021): 1925–39. http://dx.doi.org/10.1007/s11276-021-02546-w.

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AbstractMillimeter-wave (mmWave) and massive multi-input–multi-output (mMIMO) communications are the most key enabling technologies for next generation wireless networks to have large available spectrum and throughput. mMIMO is a promising technique for increasing the spectral efficiency of wireless networks, by deploying large antenna arrays at the base station (BS) and perform coherent transceiver processing. Implementation of mMIMO systems at mmWave frequencies resolve the issue of high path-loss by providing higher antenna gains. The motivation for this research work is that mmWave and mMI

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2

Shim, Seong-Joon, Seulgi Lee, Won-Seok Lee, Jae-Hyun Ro, Jung-In Baik, and Hyoung-Kyu Song. "Advanced Hybrid Beamforming Technique in MU-MIMO Systems." Applied Sciences 10, no. 17 (2020): 5961. http://dx.doi.org/10.3390/app10175961.

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This paper proposes a high performance wireless commmunication technology in MU-MIMO systems. The millimeter wave (mmWave) communication technology was considered for the future wireless communication systems such as the fifth-generation new radio (5G NR). In 5G NR, the mmWave communication technology was studied to increase the use of wide bandwidth and the data rate. Therefore, MU-MIMO systems can be used in mmWave. To decrease the complexity of conventional digital beamforming system, the hybrid beamforming system was studied. In particular, the proposed hybrid beamforming system improves t

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3

Khan, Imran, Mohammed H. Alsharif, Mohammad Haseeb Zafar, et al. "An Efficient Algorithm for mmWave MIMO Systems." Symmetry 11, no. 6 (2019): 786. http://dx.doi.org/10.3390/sym11060786.

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Efficient and Symmetry based precoding plays a key role in wireless communications. In order to improve the transmission performance of multi-user millimeter wave Multiple-Input Multiple-Output (MIMO) (MU-mmWave MIMO) systems, this paper proposes an analog precoding scheme for the receiver of mmWave MIMO with split sub-array hybrid analog and digital architecture. Then, we propose a hybrid analog and digital precoding algorithm based on channel reciprocity (APoCR) to maximize the spectral efficiency by utilizing the triple joint optimization problem, which can be divided into the analog and di

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4

Zhang, Ding, Panneer Selvam Santhalingam, Parth Pathak, and Zizhan Zheng. "CoBF: Coordinated Beamforming in Dense mmWave Networks." ACM SIGMETRICS Performance Evaluation Review 51, no. 1 (2023): 105–6. http://dx.doi.org/10.1145/3606376.3593531.

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With MIMO and enhanced beamforming features, IEEE 802.11ay is poised to create the next generation of mmWave WLANs that can provide over 100 Gbps data rate. However, beamforming between densely deployed APs and clients incurs unacceptable overhead. On the other hand, the absence of up-to-date beamforming information restricts the diversity gains available through MIMO and multi-users, reducing the overall network capacity. This paper presents a novel approach of "coordinated beamforming" (called CoBF) where only a small subset of APs are selected for beamforming in the 802.11ay mmWave WLANs. B

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5

Zhang, Ding, Panneer Selvam Santhalingam, Parth Pathak, and Zizhan Zheng. "CoBF: Coordinated Beamforming in Dense mmWave Networks." Proceedings of the ACM on Measurement and Analysis of Computing Systems 7, no. 2 (2023): 1–26. http://dx.doi.org/10.1145/3589975.

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With MIMO and enhanced beamforming features, IEEE 802.11ay is poised to create the next generation of mmWave WLANs that can provide over 100 Gbps data rate. However, beamforming between densely deployed APs and clients incurs unacceptable overhead. On the other hand, the absence of up-to-date beamforming information restricts the diversity gains available through MIMO and multi-users, reducing the overall network capacity. This paper presents a novel approach of "coordinated beamforming" (called CoBF) where only a small subset of APs are selected for beamforming in the 802.11ay mmWave WLANs. B

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6

Castaneda, Oscar, Sven Jacobsson, Giuseppe Durisi, Tom Goldstein, and Christoph Studer. "Finite-Alphabet MMSE Equalization for All-Digital Massive MU-MIMO mmWave Communication." IEEE Journal on Selected Areas in Communications 38, no. 9 (2020): 2128–41. http://dx.doi.org/10.1109/jsac.2020.3000840.

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7

Kassam, Joumana, Manar Miri, Roberto Magueta, et al. "Two-Step Multiuser Equalization for Hybrid mmWave Massive MIMO GFDM Systems." Electronics 9, no. 8 (2020): 1220. http://dx.doi.org/10.3390/electronics9081220.

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Although millimeter-wave (mmWave) and massive multiple input multiple output (mMIMO) can be considered as promising technologies for future mobile communications (beyond 5G or 6G), some hardware limitations limit their applicability. The hybrid analog-digital architecture has been introduced as a possible solution to avoid such issues. In this paper, we propose a two-step hybrid multi-user (MU) equalizer combined with low complexity hybrid precoder for wideband mmWave mMIMO systems, as well as a semi-analytical approach to evaluate its performance. The new digital non-orthogonal multi carrier

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8

Zhai, Xiongfei, Yunlong Cai, Qingjiang Shi, Minjian Zhao, Geoffrey Ye Li, and Benoit Champagne. "Joint Transceiver Design With Antenna Selection for Large-Scale MU-MIMO mmWave Systems." IEEE Journal on Selected Areas in Communications 35, no. 9 (2017): 2085–96. http://dx.doi.org/10.1109/jsac.2017.2720197.

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9

Pavia, João Pedro, Vasco Velez, Nuno Souto, Marco Ribeiro, Pedro Sebastião, and Américo Correia. "System-Level Assessment of Low Complexity Hybrid Precoding Designs for Massive MIMO Downlink Transmissions in Beyond 5G Networks." Applied Sciences 12, no. 6 (2022): 2812. http://dx.doi.org/10.3390/app12062812.

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The fast growth experienced by the telecommunications field during the last few decades has been motivating the academy and the industry to invest in the design, testing and deployment of new evolutions of wireless communication systems. Terahertz (THz) communication represents one of the possible technologies to explore in order to achieve the desired achievable rates above 100 Gbps and the extremely low latency required in many envisioned applications. Despite the potentialities, it requires proper system design, since working in the THz band brings a set of challenges, such as the reflectio

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10

Abdo, Adam Mohamed Ahmed, Xiongwen Zhao, Rui Zhang, et al. "MU-MIMO Downlink Capacity Analysis and Optimum Code Weight Vector Design for 5G Big Data Massive Antenna Millimeter Wave Communication." Wireless Communications and Mobile Computing 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/7138232.

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Multiuser multiple input multiple output (MU-MIMO) wireless communication system provides substantial downlink throughput in millimeter wave (mmWave) communication by allowing multiple users to communicate at the same frequency and time slots. However, the design of the optimum beam-vector for each user to minimise interference from other users is challenging. In this paper, based on the concept of signal-to-leakage plus noise ratio (SLNR), we analyze the ergodic sum-rate capacity using statistical Eigen-mode (SE) and zero-forcing (ZF) models with Ricean fading channel. In the analysis, the or

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11

Sadique, Joarder Jafor, Shaikh Enayet Ullah, Raad Raad, et al. "Gyre Precoding and T-Transformation-Based GFDM System for UAV-Aided mMTC Network." Electronics 10, no. 23 (2021): 2915. http://dx.doi.org/10.3390/electronics10232915.

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In this paper, an unmanned aerial vehicle (UAV)-aided multi-antenna configured downlink mmWave cooperative generalized frequency division multiplexing (GFDM) system is proposed. To provide physical layer security (PLS), a 3D controlled Lorenz mapping system is introduced. Furthermore, the combination of T-transformation spreading codes, walsh Hadamard transform, and discrete Fourier transform (DFT) techniques are integrated with a novel linear multi-user multiple-input multiple-output (MU-MIMO) gyre precoding (GP) for multi-user interference reduction. Furthermore, concatenated channel-coding

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12

Jiang, Jing, and Deting Kong. "Joint User Scheduling and MU-MIMO Hybrid Beamforming Algorithm for mmWave FDMA Massive MIMO System." International Journal of Antennas and Propagation 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/4341068.

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The large bandwidth and multipath in millimeter wave (mmWave) cellular system assure the existence of frequency selective channels; it is necessary that mmWave system remains with frequency division multiple access (FDMA) and user scheduling. But for the hybrid beamforming system, the analog beamforming is implemented by the same phase shifts in the entire frequency band, and the wideband phase shifts may not be harmonious with all users scheduled in frequency resources. This paper proposes a joint user scheduling and multiuser hybrid beamforming algorithm for downlink massive multiple input m

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13

Hassan, Ahmad Kamal, Ziaul Haq Abbas, Ghulam Abbas, and Thar Baker. "Simultaneous Diagonalization Using Baseband Beamforming in mmWave MU-MIMO Systems." Electronics 9, no. 11 (2020): 1944. http://dx.doi.org/10.3390/electronics9111944.

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We consider the problem of simultaneous diagonalization of Hermitian matrices for the desired and co-channel interference terms of millimeter-wave (mmWave) multi-user multiple-input multiple-output systems. The joint unitary eigenvectors and the corresponding eigenvalues are known to assist in the mathematical tractability of key performance metrics, such as outage probability, ergodic capacity, and spectral efficiency. We formulate the signal-to-interference-plus-noise ratio in a canonical quadratic form and subsume the digital baseband beamforming vectors in the weight matrices of channels a

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14

Kei Sakaguchi, Takumi Yoneda, Masashi Iwabuchi, and Tomoki Murakami. "mmWave massive analog relay MIMO." ITU Journal on Future and Evolving Technologies 2, no. 6 (2021): 43–55. http://dx.doi.org/10.52953/wzof2275.

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Millimeter-Wave (mmWave) communications are a key technology to realize ultra-high data rate and ultra-low latency wireless communications. Compared with conventional communication systems in the microwave band such as 4G/LTE, mmWave communications employ a higher frequency band which allows a wider bandwidth and is suitable for large capacity communications. It is expected to be applied to various use cases such as mmWave cellular networks and vehicular networks. However, due to the strong diffraction loss and the path loss in the mmWave band, it is difficult or even impossible to achieve hig

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15

Song, Xiaoshen, Thomas Kuhne, and Giuseppe Caire. "Fully-/Partially-Connected Hybrid Beamforming Architectures for mmWave MU-MIMO." IEEE Transactions on Wireless Communications 19, no. 3 (2020): 1754–69. http://dx.doi.org/10.1109/twc.2019.2957227.

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16

Nariman Torkzaban, Mohammad A. (Amir) Khojastepour, Mohammad Farajzadeh-Tehrani, and John S. Baras. "RIS-aided mmWave beam-forming for two-way communications of multiple pairs." ITU Journal on Future and Evolving Technologies 4, no. 1 (2023): 87–101. http://dx.doi.org/10.52953/vbex2484.

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Millimeter-wave (mmWave) communications is a key enabler towards realizing enhanced Mobile Broadband (eMBB) as a key promise of 5G and beyond, due to the abundance of bandwidth available at mmWave bands. An mmWave coverage map consists of blind spots due to shadowing and fading especially in dense urban environments. Beam-forming employing massive MIMO is primarily used to address high attenuation in the mmWave channel. Due to their ability in manipulating the impinging electromagnetic waves in an energy-efficient fashion, Reconfigurable Intelligent Surfaces (RISs) are considered a great match

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17

Ahn, Yongjin, Taeyoung Kim, and Chungyong Lee. "A Beam Steering Based Hybrid Precoding for MU-MIMO mmWave Systems." IEEE Communications Letters 21, no. 12 (2017): 2726–29. http://dx.doi.org/10.1109/lcomm.2017.2747551.

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18

Ribeiro, Lucas N., Stefan Schwarz, and Andre L. F. De Almeida. "Double-Sided Massive MIMO Transceivers for mmWave Communications." IEEE Access 7 (2019): 157667–79. http://dx.doi.org/10.1109/access.2019.2949945.

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19

Lu, Conghui, and Peng Chen. "Robust Channel Estimation Scheme for Multi-UAV MmWave MIMO Communication with Jittering." Electronics 12, no. 9 (2023): 2102. http://dx.doi.org/10.3390/electronics12092102.

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In unmanned aerial vehicle (UAV)-assisted millimeter-wave (mmWave) communications, the communication performance is significantly degraded by UAV jitter. We formulate a UAV-assisted mmWave channel model with hybrid beamforming for the impacts of UAV jitter. Then, we derive the distribution of angle of arrivals/departures (AOAs/AODs) with random fluctuation of the UAV attitude angle. We develop an iterative reweight-based robust scheme as the super-resolution AOAs/AODs estimation method. Specifically, we introduce the partially adaptive momentum (Padam) estimation method to optimize the objecti

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20

Ortega, Alvaro Javier. "Hierarchical optimization: A hybrid processing for downlink massive MU‐MIMO mmWave systems." IET Communications 15, no. 20 (2021): 2526–36. http://dx.doi.org/10.1049/cmu2.12292.

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21

Marti, Gian, Oscar Castaneda, and Christoph Studer. "Jammer Mitigation via Beam-Slicing for Low-Resolution mmWave Massive MU-MIMO." IEEE Open Journal of Circuits and Systems 2 (2021): 820–32. http://dx.doi.org/10.1109/ojcas.2021.3105228.

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22

Wang, Gengshan, Zhijia Yang, and Tierui Gong. "Hybrid Beamforming Design for Self-Interference Cancellation in Full-Duplex Millimeter-Wave MIMO Systems with Dynamic Subarrays." Entropy 24, no. 11 (2022): 1687. http://dx.doi.org/10.3390/e24111687.

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Full-duplex (FD) millimeter-wave (mmWave) multiple-input multiple-output (MIMO) communication is a promising solution for the extremely high-throughput requirements in future cellular systems. The hybrid beamforming structure is preferable for its low hardware complexity and low power consumption with acceptable performance. In this paper, we introduce the hardware efficient dynamic subarrays to the FD mmWave MIMO systems and propose an effective hybrid beamforming design to cancel the self-interference (SI) in the considered system. First, assuming no SI, we obtain the optimal fully digital b

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23

He, Jiguang, Henk Wymeersch, and Markku Juntti. "Leveraging Location Information for RIS-Aided mmWave MIMO Communications." IEEE Wireless Communications Letters 10, no. 7 (2021): 1380–84. http://dx.doi.org/10.1109/lwc.2021.3067474.

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24

Shareef, Faez Fawwaz, and Manal Jamil Al-Kindi. "Wideband hybrid precoder for mmWave multiuser MIMO OFDM communications." Bulletin of Electrical Engineering and Informatics 11, no. 3 (2022): 1409–17. http://dx.doi.org/10.11591/eei.v11i3.3551.

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Using millimeter wave (mmWave) transmission for massive multiple input multiple output (MIMO) system can improve system performance and effectively reduce the size of the massive antennas array. However, A wideband beamformer design is needed to take advantage of this wideband channel. In this paper, a downlink multi-user massive MIMO orthogonal frequency division multiplexing (MIMO OFDM) system for mmWave communications is proposed. Each subcarrier channel can be approximated as a narrowband clustered channel, so a narrowband precoder can be applied for each subchannel. The hybrid precoder is

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25

Kabalci, Yasin, and Muhammad Ali. "Improved Hybrid Precoder Design for Secure mmWave MIMO Communications." Elektronika ir Elektrotechnika 26, no. 4 (2020): 72–77. http://dx.doi.org/10.5755/j01.eie.26.4.25857.

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Key challenges of emerging mobile communication systems are to provide higher data rates, diverse device connectivity, low latency, higher system capacity, and low energy consumption. The communication systems exploiting the millimeter-wave (mmWave) band are realized to resolve thereof inevitable issues. However, security is considered as one of the challenging issues in mmWave communication in addition to unavoidable problems (e.g., propagation loss, penetration loss, and fading). This study aims to construct efficient secure hybrid precoder with low-resolution phase shifters that can protect

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26

Shen, Ye-Shun, Fang-Biau Ueng, and Chin-Yang Kung. "Novel Detectors for Massive MU-MIMO Communications." IETE Journal of Research 66, no. 6 (2019): 823–40. http://dx.doi.org/10.1080/03772063.2019.1615390.

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27

Meng, Fan, Shengheng Liu, Yongming Huang, and Zhaohua Lu. "Learning-Aided Beam Prediction in mmWave MU-MIMO Systems for High-Speed Railway." IEEE Transactions on Communications 70, no. 1 (2022): 693–706. http://dx.doi.org/10.1109/tcomm.2021.3124963.

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28

Castaneda, Oscar, Sven Jacobsson, Giuseppe Durisi, Tom Goldstein, and Christoph Studer. "High-Bandwidth Spatial Equalization for mmWave Massive MU-MIMO With Processing-in-Memory." IEEE Transactions on Circuits and Systems II: Express Briefs 67, no. 5 (2020): 891–95. http://dx.doi.org/10.1109/tcsii.2020.2983999.

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29

Li, Jianguo, Xiangming Li, Aihua Wang, and Neng Ye. "Performance Analysis for Downlink MIMO-NOMA in Millimeter Wave Cellular Network with D2D Communications." Wireless Communications and Mobile Computing 2019 (June 19, 2019): 1–11. http://dx.doi.org/10.1155/2019/1914762.

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Enabling nonorthogonal multiple access (NOMA) in device-to-device (D2D) communications under the millimeter wave (mmWave) multiple-input multiple-output (MIMO) cellular network is of critical importance for 5G wireless systems to support low latency, high reliability, and high throughput radio access. In this paper, the closed-form expressions for the outage probability and the ergodic capacity in downlink MIMO-NOMA mmWave cellular network with D2D communications are considered, which indicates that NOMA outperforms TDMA. The influencing factors of performance, such as transmission power and a

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30

Chen, Na, Songlin Sun, Michel Kadoch, and Bo Rong. "SDN Controlled mmWave Massive MIMO Hybrid Precoding for 5G Heterogeneous Mobile Systems." Mobile Information Systems 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/9767065.

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In 5G mobile network, millimeter wave (mmWave) and heterogeneous networks (Hetnets) are significant techniques to sustain coverage and spectral efficiency. In this paper, we utilize the hybrid precoding to overcome hardware constraints on the analog-only beamforming in mmWave systems. Particularly, we identify the complicated antenna coordination and vast spatial domain information as the outstanding challenges in mmWave Hetnets. In our work, we employ software defined network (SDN) to accomplish radio resource management (RRM) and achieve flexible spacial coordination in mmWave Hetnets. In ou

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31

Özbek, Berna, Oğulcan Erdoğan, Sherif A. Busari, and Jonathan Gonzalez. "Hybrid beamforming strategies for secure multicell multiuser mmWave MIMO communications." Physical Communication 46 (June 2021): 101319. http://dx.doi.org/10.1016/j.phycom.2021.101319.

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Yang, Ping, Yue Xiao, Yong Liang Guan, Zilong Liu, Shaoqian Li, and Wei Xiang. "Adaptive SM-MIMO for mmWave Communications With Reduced RF Chains." IEEE Journal on Selected Areas in Communications 35, no. 7 (2017): 1472–85. http://dx.doi.org/10.1109/jsac.2017.2698899.

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Li, Xiang, Yang Huang, Wei Heng, and Jing Wu. "Machine Learning-Inspired Hybrid Precoding for mmWave MU-MIMO Systems with Domestic Switch Network." Sensors 21, no. 9 (2021): 3019. http://dx.doi.org/10.3390/s21093019.

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Hybrid precoding is an attractive technique in MU-MIMO systems with significantly reduced hardware costs. However, it still requires a complex analog network to connect the RF chains and antennas. In this paper, we develop a novel hybrid precoding structure for the downlink transmission with a compact RF structure. Specifically, the proposed structure relies on domestic connections instead of global connections to link RF chains and antennas. Fixed-degree phase shifters provide candidate signals, and simple on-off switches are used to route the signal to antennas, thus RF adders are no longer

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FANG, Shu, Li-hua LI, and Ping ZHANG. "Grassmannian precoding MU-MIMO scheme." Journal of China Universities of Posts and Telecommunications 15, no. 3 (2008): 105–17. http://dx.doi.org/10.1016/s1005-8885(08)60116-8.

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Hemrungrote, Sirichai, Toshikazu Hori, Mitoshi Fujimoto, and Kentaro Nishimori. "Channel Capacity Evaluation for Urban MIMO Systems Using Path Visibility." ECTI Transactions on Electrical Engineering, Electronics, and Communications 9, no. 1 (2010): 121–32. http://dx.doi.org/10.37936/ecti-eec.201191.172335.

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Multiple-Input Multiple-Output (MIMO) and Multi-User MIMO (MU-MIMO) systems are expected to improve the channel capacity over the limited bandwidth of existing wireless communication networks. The effects on the channel capacity characteristics of Single-User MIMO (SU-MIMO) systems in urban scenarios have been previously studied. In this paper, we first clarify that the larger number of antennas cannot contribute the improvement in the channel capacity in urban SU-MIMO scenarios due to the very high spatial correlation. Next, we focus on the MU-MIMO transmission because it can discriminate mul

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Liu, Fan, Christos Masouros, Ang Li, Huafei Sun, and Lajos Hanzo. "MU-MIMO Communications With MIMO Radar: From Co-Existence to Joint Transmission." IEEE Transactions on Wireless Communications 17, no. 4 (2018): 2755–70. http://dx.doi.org/10.1109/twc.2018.2803045.

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Assiimwe, Eva, and Yihenew Wondie Marye. "A Stochastic Confocal Elliptic-Cylinder Channel Model for 3D MIMO in Millimeter-Wave High-Speed Train Communication System." Electronics 11, no. 13 (2022): 1948. http://dx.doi.org/10.3390/electronics11131948.

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Massive MIMO technology is among the most promising solutions for achieving higher gain in 5G millimeter-wave (mmWave) channel models for high-speed train (HST) communication systems. Based on stochastic geometry methods, it is fundamental to accurately develop the associated MIMO channel model to access system performance. These MIMO channel models could be extended to massive MIMO with antenna arrays in more than one plane. In this paper, the proposed MIMO 3D geometry-based stochastic model (GBSM) is composed of the line of sight component (LOS), one sphere, and multiple confocal elliptic cy

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38

Guo, Shuaishuai, Haixia Zhang, Peng Zhang, Shuping Dang, Chengcheng Xu, and Mohamed-Slim Alouini. "Signal Shaping for Non-Uniform Beamspace Modulated mmWave Hybrid MIMO Communications." IEEE Transactions on Wireless Communications 19, no. 10 (2020): 6660–74. http://dx.doi.org/10.1109/twc.2020.3004497.

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Zhao, Jianwei, Feifei Gao, Linling Kuang, Qihui Wu, and Weimin Jia. "Channel Tracking With Flight Control System for UAV mmWave MIMO Communications." IEEE Communications Letters 22, no. 6 (2018): 1224–27. http://dx.doi.org/10.1109/lcomm.2018.2824800.

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Jiang, Ting, Maozhong Song, Xiaorong Zhu, and Xu Liu. "Channel Estimation for Broadband Millimeter Wave MIMO Systems Based on High-Order PARALIND Model." Wireless Communications and Mobile Computing 2021 (November 23, 2021): 1–12. http://dx.doi.org/10.1155/2021/6408442.

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Channel state information (CSI) is important to improve the performance of wireless transmission. However, the problems of high propagation path loss, multipath, and frequency selective fading make it difficult to obtain the CSI in broadband millimeter-wave (mmWave) system. Based on the inherent multidimensional structure of mmWave multipath channels and the correlation between channel dimensions, mmWave multiple input multiple output (MIMO) channels are modelled as high-order parallel profiles with linear dependence (PARALIND) model in this paper, and a new PARALIND-based channel estimation a

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41

Ngoc, Nguyen Dinh, and Kien Truong. "Phase Impairment Estimation for mmWave MIMO Systems with Low Resolutions ADC and Imperfect CSI." EAI Endorsed Transactions on Industrial Networks and Intelligent Systems 9, no. 4 (2022): e3. http://dx.doi.org/10.4108/eetinis.v9i4.2467.

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Multiple-Input Multiple-Output systems operating at millimeter wave band (mmWave MIMO) are a promising technology next generations of mobile networks. In practice, the non-ideal hardware is a challenge for commercially viable mmWave MIMO transceivers and come from non-linearities of the amplifier, phase noise, quantization errors, mutual coupling between antenna ports, and In-phase/Quadrature (I/Q) imbalance. As a result, the received signals are affected by non-ideal transceiver hardware components, thus reduce the performance of such systems, especially phase impairment caused by phase noise

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NISHIMORI, Kentaro, Riichi KUDO, Naoki HONMA, Yasushi TAKATORI, and Masato MIZOGUCHI. "16 × 16 MIMO Testbed for MU-MIMO Downlink Transmission." IEICE Transactions on Communications E93-B, no. 2 (2010): 345–52. http://dx.doi.org/10.1587/transcom.e93.b.345.

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Khan, Muhammad Imran, Sarmadullah Khan, Saad Hassan Kiani, et al. "A Compact mmWave MIMO Antenna for Future Wireless Networks." Electronics 11, no. 15 (2022): 2450. http://dx.doi.org/10.3390/electronics11152450.

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This article presents a four-element multiple-input multiple-output (MIMO) antenna design for next-generation millimeter-wave (mmWave) communication systems. The single antenna element of the MIMO systems consists of a T-shaped and plow-shaped patch radiator designed on an ultra-thin Rogers RT/Duroid 5880 substrate. The dimensions of the single antenna are 10 × 12 mm2. The MIMO system is designed by placing four elements in a polarization diversity configuration whose overall dimensions are 24 × 24 mm2. From the measured results, it is observed that the MIMO antenna provides 9.23 GHz impedance

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Uwaechia, Anthony Ngozichukwuka, and Nor Muzlifah Mahyuddin. "A novel committee machine hybrid precoding and combining algorithm for mmWave massive MU-MIMO systems." Physical Communication 46 (June 2021): 101326. http://dx.doi.org/10.1016/j.phycom.2021.101326.

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Wang, Dehao, Wenbin Zhang, and Qiuyue Zhu. "Heuristic Search Inspired Beam Selection Algorithms for mmWave MU-MIMO System With Discrete Lens Array." IEEE Access 9 (2021): 61324–33. http://dx.doi.org/10.1109/access.2021.3074128.

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Hong, Tao, Jin Yao, Cong Liu, and Fei Qi. "mmWave Measurement of RF Reflectors for 5G Green Communications." Wireless Communications and Mobile Computing 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/8217839.

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In recent years, with the energy consumption and environmental degradation, science and technology embarked on a path of sustainable development. In this situation, 5G green communication system has been widely used. This paper introduces the application of RF reflectors to 5G mmWave, where line-of-sight (LoS) blockage is a major hindrance for the coverage. In particular, we investigate the lab measurement of RF reflectors, which is a critical step from the theory to the practice. Furthermore, through the lab measurement, a 3D near-field range migration (RM) imaging algorithm for MIMO array co

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Sarker, Md Abdul Latif, Woosung Son, and Dong Seog Han. "RIS-Assisted Hybrid Beamforming and Connected User Vehicle Localization for Millimeter Wave MIMO Systems." Sensors 23, no. 7 (2023): 3713. http://dx.doi.org/10.3390/s23073713.

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A reconfigurable intelligent surface (RIS) is a type of metasurface that can dynamically control the reflection and transmission of electromagnetic waves, such as radio waves, by changing its physical properties. Recently, RISs have played an important role in intelligently reshaping wireless propagation environments to improve the received signal gain as well as spectral efficiency performance. In this paper, we consider a millimeter wave (mmWave) vehicle-to-vehicle (V2V) multiple-input multiple-output (MIMO) system in which, an RIS is deployed to aid downlink V2V data transmission. In partic

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Shahjehan, Waleed, Asad Riaz, Imran Khan, Ali Safaa Sadiq, Suleman Khan, and Muhammad Khurram Khan. "Bat algorithm-based beamforming for mmWave massive MIMO systems." International Journal of Communication Systems 33, no. 2 (2019): e4182. http://dx.doi.org/10.1002/dac.4182.

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Nassim, Aarab Mohamed, and Chakkor Otman. "Millimeter-Wave Channel Estimation using Alternating Direction Method of Multipliers." International Journal of Innovative Technology and Exploring Engineering 10, no. 4 (2021): 239–42. http://dx.doi.org/10.35940/ijitee.d8597.0210421.

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With the explosive growth in demand for mobile data traffic, the contradiction between capacity requirements and spectrum scarcity becomes more and more prominent. The bandwidth is becoming a key issue in 5G mobile networks. However, with the huge bandwidth from 30 GHz to 300 GHz, mmWave communications considered an important part of the 5G mobile network providing multi communication services, where channel state information considers a challenging task for millimeter wave MIMO systems due to the huge number of antennas. Therefore, this paper discusses the channel and signal models of the mmW

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Salehi, Pouria, Naser Parhizgar, and Farshad Pesaran. "A New Cooperative and Distributed Antenna Structure in Massive MIMO-NOMA Based on mmWave Transmission Scheme." Wireless Communications and Mobile Computing 2021 (October 29, 2021): 1–10. http://dx.doi.org/10.1155/2021/6717077.

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In this paper, we propose a new massive multiple-input multiple-output (MIMO) nonorthogonal multiple access (NOMA) system with a cooperative and distributed antenna structure based on a millimeter-wave (mmWave) transmission system. We proposed this method to obtain high energy efficiency (EE) and spectrum efficiency (SE) by using the mmWave transmission scheme. In the proposed system, the user selects a few nearby base stations (BS) to create a virtual cell to own the serving BS antenna set. We concentrate on the mmWave massive MIMO-NOMA scheme. In this scheme, a large number of BS antennas an

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