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Journal articles on the topic 'Wireless MIMO Communications'

Author: Grafiati

Published: 6 September 2023

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1

Dr.Raad.H., Thaher. "Environmental Analysis of MIMO Channel Capacity Under Variable." مجلة جامعة الملكة أروى العلمية المحكمة 1, no. 7 (2011): 24. http://dx.doi.org/10.58963/qausrj.v1i7.45.

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Digital communication using MIMO has been one of the most promising research areas in wireless communictions nowadays as it offers a lot of promises for future wireless communications .MIMO seems to be the only technology that is advancing the wireless industry from 3Gto 4G systems .I n this work MIMO system has been studied in great detail and simulated for different cases and it was concentrated on the performance of its capacity under several environmental conditions . MIMO system offer significant gains in performance over traditional wireless communication systems . Spatial multiplexing i

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2

Stuber, G. L., J. R. Barry, S. W. McLaughlin, Ye Li, M. A. Ingram, and T. G. Pratt. "Broadband MIMO-OFDM wireless communications." Proceedings of the IEEE 92, no. 2 (2004): 271–94. http://dx.doi.org/10.1109/jproc.2003.821912.

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3

Haykin, S., M. Sellathurai, Y. de Jong, and T. Willink. "Turbo-MIMO for wireless communications." IEEE Communications Magazine 42, no. 10 (2004): 48–53. http://dx.doi.org/10.1109/mcom.2004.1341260.

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4

Sejan, Mohammad Abrar Shakil, Md Habibur Rahman, Md Abdul Aziz, Dong-Sun Kim, Young-Hwan You, and Hyoung-Kyu Song. "A Comprehensive Survey on MIMO Visible Light Communication: Current Research, Machine Learning and Future Trends." Sensors 23, no. 2 (2023): 739. http://dx.doi.org/10.3390/s23020739.

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Visible light communication (VLC) has contributed new unused spectrum in addition to the traditional radio frequency communication and can play a significant role in wireless communication. The adaptation of VLC technology enhances wireless connectivity both in indoor and outdoor environments. Multiple-input multiple-output (MIMO) communication has been an efficient technique for increasing wireless communications system capacity and performance. With the advantages of MIMO techniques, VLC can achieve an additional degree of freedom. In this paper, we systematically perform a survey of the exi

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5

Nguyen, Hoang, Johnson I. Agbinya, and John Devlin. "Channel Characterisation and Link Budget of MIMO Configuration in Near Field Magnetic Communication." International Journal of Electronics and Telecommunications 59, no. 3 (2013): 255–62. http://dx.doi.org/10.2478/eletel-2013-0030.

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Abstract Traditional radio communication has gained significantly from using multiple input and multiple output (MIMO) architecture in the system. Many wireless applications, such as wireless LAN and cellular network, have adopted this technology to improve their system performance. However, the effect of MIMO systems has not been investigated in the case of inductive near field short range communications. The purpose of this paper is to explore a new method for increasing the magnetic communication range using MIMO. Three system models includingMISO, SIMO and MIMO are proposed to characterize

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6

Sun, Y. "Editorial: MIMO wireless and mobile communications." IEE Proceedings - Communications 153, no. 4 (2006): 475. http://dx.doi.org/10.1049/ip-com:20069019.

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7

Gu, X., X. H. Peng, and G. C. Zhang. "MIMO systems for broadband wireless communications." BT Technology Journal 24, no. 2 (2006): 90–96. http://dx.doi.org/10.1007/s10550-006-0044-7.

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8

Bhatt, Maharshi K., Bhavin S. Sedani, and Komal Borisagar. "Performance analysis of massive multiple input multiple output for high speed railway." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 6 (2021): 5180. http://dx.doi.org/10.11591/ijece.v11i6.pp5180-5188.

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This paper analytically reviews the performance of massive multiple input multiple output (MIMO) system for communication in highly mobility scenarios like high speed Railways. As popularity of high speed train increasing day by day, high data rate wireless communication system for high speed train is extremely required. 5G wireless communication systems must be designed to meet the requirement of high speed broadband services at speed of around 500 km/h, which is the expected speed achievable by HSR systems, at a data rate of 180 Mbps or higher. Significant challenges of high mobility communi

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Wang, Qian, Ning Mu, LingLi Wang, Safieddin Safavi-Naeini, and JingPing Liu. "5G MIMO Conformal Microstrip Antenna Design." Wireless Communications and Mobile Computing 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/7616825.

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With the development of wireless communication technology, 5G will develop into a new generation of wireless mobile communication systems. MIMO (multiple-input multiple-output) technology is expected to be one of the key technologies in the field of 5G wireless communications. In this paper, 4 pairs of microstrip MIMO conformal antennas of 35 GHz have been designed. Eight-element microstrip Taylor antenna array with series-feeding not only achieves the deviation of the main lobe of the pattern but also increases the bandwidth of the antenna array and reduces sidelobe. MIMO antennas have been f

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10

Saini, Mehak, and Surender K. Grewal. "Transmit Antenna Selection Methods For Mimo Systems In Wireless Communications." Journal of University of Shanghai for Science and Technology 23, no. 08 (2021): 523–31. http://dx.doi.org/10.51201/jusst/21/08424.

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Though MIMO systems improve performance of a wireless communication network by the usage of multiple antennas, demand of distinct set of RF chain (i.e., electronic components required for antenna transmission and reception, in wireless communication) for all the antennas leads to an increase in complexity and cost. Antenna selection technique of MIMO has proved to be a good means to solve this issue. Antenna Selection methods find optimal number of antennas required out of the total antennas present in the MIMO (Multiple Input Multiple Output) system. The selection of antenna can be performed

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11

Abouda, A. A., and N. G. Tarhuni. "MIMO Channel Gain Mechanisms Relative to SISO Channel." Journal of Engineering Research [TJER] 7, no. 2 (2010): 40. http://dx.doi.org/10.24200/tjer.vol7iss2pp40-47.

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In contrast to the rest of wireless communication technologies, multiple-input multiple-output (MIMO) technology enjoys different gain mechanisms that make it very attractive for reliable high data rate wireless communications. This paper presents a study on these gain mechanisms with particular emphasis on the case of high average received signal to noise ratio (SNR) where the MIMO system deployment is most promising. We write the MIMO channel capacity in terms of gains relative to a single- input single-output (SISO) wireless channel. Doing so, spatial multiplexing gain and power gain of MIM

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12

Behna, Shuja, and Neetu Sikarwar. "MIMO-OFDMs BER and Design Performance for Wireless Broadband Communications." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (2018): 4–7. http://dx.doi.org/10.31142/ijtsrd10768.

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13

Chae, Chan-Byoun, Antonio Forenza, Robert Heath, Matthew McKay, and Iain Collings. "Adaptive MIMO transmission techniques for broadband wireless communication systems [Topics in Wireless Communications." IEEE Communications Magazine 48, no. 5 (2010): 112–18. http://dx.doi.org/10.1109/mcom.2010.5458371.

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14

Bhandari, Renuka, and Sangeeta Jadhav. "Spectral Efficient Blind Channel Estimation Technique for MIMO-OFDM Communications." International Journal of Advances in Applied Sciences 7, no. 3 (2018): 286. http://dx.doi.org/10.11591/ijaas.v7.i3.pp286-297.

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<p><em>With emerge of increasing research in the domain of future wireless communications, massive MIMO (multiple inputs multiple outputs) attracted most of researchers interests. Massive MIMO is high-speed wireless communication standards. A channel estimation technology plays the essential role in the MIMO systems. Efficient channel estimation leads to spectral efficient wireless communications. The critics of Inter-Symbol Interference (ISI) are the challenging tasks while designing the channel estimation methods. To mitigate the challenges of ISI, we proposed the novel blind cha

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15

Huo, Yiming, Xingqin Lin, Boya Di, et al. "Technology Trends for Massive MIMO towards 6G." Sensors 23, no. 13 (2023): 6062. http://dx.doi.org/10.3390/s23136062.

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At the dawn of the next-generation wireless systems and networks, massive multiple-input multiple-output (MIMO) in combination with leading-edge technologies, methodologies, and architectures are poised to be a cornerstone technology. Capitalizing on its successful integration and scalability within 5G and beyond, massive MIMO has proven its merits and adaptability. Notably, a series of evolutionary advancements and revolutionary trends have begun to materialize in recent years, envisioned to redefine the landscape of future 6G wireless systems and networks. In particular, the capabilities and

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16

Madeira, João, João Guerreiro, Rui Dinis, Paulo Montezuma, and Luís Miguel Campos. "On the Physical Layer Security Characteristics for MIMO-SVD Techniques for SC-FDE Schemes." Sensors 19, no. 21 (2019): 4757. http://dx.doi.org/10.3390/s19214757.

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Multi-Input, Multi-Output (MIMO) techniques are seeing widespread usage in wireless communication systems due to their large capacity gains. On the other hand, security is a concern of any wireless system, which can make schemes that implement physical layer security key in assuring secure communications. In this paper, we study the physical layer security issues of MIMO with Singular Value Decomposition (SVD) schemes, employed along with Single-Carrier with Frequency-Domain Equalization (SC-FDE) techniques. More concretely. the security potential against an unintended eavesdropper is analysed

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17

Gursoy, Mustafa Cenk. "MIMO Wireless Communications Under Statistical Queueing Constraints." IEEE Transactions on Information Theory 57, no. 9 (2011): 5897–917. http://dx.doi.org/10.1109/tit.2011.2162168.

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18

Lawton, G. "Is MIMO the future of wireless communications?" Computer 37, no. 7 (2004): 20–22. http://dx.doi.org/10.1109/mc.2004.57.

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19

Wang, Zhaocheng, and Jiaxuan Chen. "Networked multiple-input-multiple-output for optical wireless communication systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190189. http://dx.doi.org/10.1098/rsta.2019.0189.

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With the escalation of heterogeneous data traffic, the research on optical wireless communication (OWC) has attracted much attention, owing to its advantages such as wide spectrum, low power consumption and high security. Ubiquitous optical devices, e.g. light-emitting diodes (LEDs) and cameras, are employed to support optical wireless links. Since the distribution of these optical devices is usually dense, multiple-input-multiple-output (MIMO) can be naturally adopted to attain spatial diversity gain or spatial multiplexing gain. As the scale of OWC networks enlarges, optical MIMO can also co

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20

Lee, Doohwan, Hirofumi Sasaki, Hiroyuki Fukumoto, Yasunori Yagi, and Takashi Shimizu. "An Evaluation of Orbital Angular Momentum Multiplexing Technology." Applied Sciences 9, no. 9 (2019): 1729. http://dx.doi.org/10.3390/app9091729.

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This paper reports our investigation of wireless communication performance obtained using orbital angular momentum (OAM) multiplexing, from theoretical evaluation to experimental study. First, we show how we performed a basic theoretical study on wireless OAM multiplexing performance regarding modulation, demodulation, multiplexing, and demultiplexing. This provided a clear picture of the effects of mode attenuation and gave us insight into the potential and limitations of OAM wireless communications. Then, we expanded our study to experimental evaluation of a dielectric lens and end-to-end wi

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21

Imoize, Agbotiname Lucky, Augustus Ehiremen Ibhaze, Aderemi A. Atayero, and K. V. N. Kavitha. "Standard Propagation Channel Models for MIMO Communication Systems." Wireless Communications and Mobile Computing 2021 (February 15, 2021): 1–36. http://dx.doi.org/10.1155/2021/8838792.

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The field of wireless communication networks has witnessed a dramatic change over the last decade due to sophisticated technologies deployed to satisfy various demands peculiar to different data-intensive wireless applications. Consequently, this has led to the aggressive use of the available propagation channels to fulfill the minimum quality of service (QoS) requirement. A major barometer used to gauge the performance of a wireless communication system is the spectral efficiency (SE) of its communication channels. A key technology used to improve SE substantially is the multiple input multip

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22

Chien-Hsiang Wu, Chien-Hsiang Wu, and Chin-Feng Lai Chien-Hsiang Wu. "Data-driven Diversity Antenna Selection for MIMO Communication using Machine Learning." 網際網路技術學刊 23, no. 1 (2022): 001–9. http://dx.doi.org/10.53106/160792642022012301001.

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<p>With the popularity of wireless application environments, smart antenna technology has completely changed the communication system. In order to improve the quality of wireless transmission, smart antennas have been widely used in wireless devices. Wireless signal modeling and prediction machine learning gradually replaced the traditional smart antenna selection method in the antenna selection solution. This article utilizes mobile devices to adjust the diversity antenna pattern for test verification in a MIMO wireless communication environment. The proposed method manipulates signal p

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Guerreiro, João, Rui Dinis, and Luís Campos. "On the Achievable Capacity of MIMO-OFDM Systems in the CathLab Environment." Sensors 20, no. 3 (2020): 938. http://dx.doi.org/10.3390/s20030938.

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In the last years, the evolution of digital communications has been harnessed by medical applications. In that context, wireless communications are preferable over wired communications, as they facilitate the work of health technicians by reducing cabling on the stretchers. However, the use of wireless communications is challenging, especially when high data rates and low latencies are required. In those scenarios, multiple-input multiple-output (MIMO) techniques might have an important role, thanks to the high capacity gains that they can exhibit, which ideally increase with the MIMO size. In

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24

Nguyen, Hieu Trung, and Phu Huu Bui. "FPGA Implementation of Mimo E-SDM for future communications wireless networks." Science and Technology Development Journal 17, no. 1 (2014): 81–91. http://dx.doi.org/10.32508/stdj.v17i1.1296.

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Multiple-input multiple-output (MIMO) systems applying the Eigenbeam-Space Division Multiplexing (E-SDM) technique can be considered as optimal MIMO systems because of providing the highest channel capacity and good communications reliability. In the systems, orthogonal transmission beams are formed between transmit and receive sides; and also optimal transmit input data are adaptively allocated. In addition, a simple detection can be used at receiver to totally eliminate sub-stream interference. Therefore, MIMO E-SDM systems have been considered as a good potential technology for future high

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Ding, Jupeng, Chih-Lin I, Jintao Wang, Hui Yang, and Lili Wang. "Performance Comparison of Repetition Coding MIMO Optical Wireless Communications with Distinct Light Beams." Sensors 22, no. 3 (2022): 1256. http://dx.doi.org/10.3390/s22031256.

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In current optical wireless communications (OWC) oriented research works, the various multiple input multiple output (MIMO) techniques are introduced and utilized to enhance the coverage performance. Objectively, this Lambertian light beam based MIMO research paradigm neglects the light beam diversity and the potential performance gains. In this work, the distinct non-Lambertian light beams of commercially available light emitting diodes (LEDs) were adopted to configure MIMO OWC links. Specifically, the homogenous and heterogeneous non-Lambertian MIMO configurations were constituted in typical

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Salam, Abdul. "Subsurface MIMO: A Beamforming Design in Internet of Underground Things for Digital Agriculture Applications." Journal of Sensor and Actuator Networks 8, no. 3 (2019): 41. http://dx.doi.org/10.3390/jsan8030041.

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In underground (UG) multiple-input and multiple-output (MIMO), transmit beamforming is used to focus energy in the desired direction. There are three different paths in the underground soil medium through which the waves propagate to reach the receiver. When the UG receiver receives a desired data stream only from the desired path, then the UG MIMO channel becomes a three-path (lateral, direct, and reflected) interference channel. Accordingly, the capacity region of the UG MIMO three-path interference channel, and the degrees of freedom (multiplexing gain of this MIMO channel) requires careful

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El Ghzaoui, M., A. Hmamou, J. Foshi, and J. Mestoui. "Compensation of Non-linear Distortion Effects in MIMO-OFDM Systems Using Constant Envelope OFDM for 5G Applications." Journal of Circuits, Systems and Computers 29, no. 16 (2020): 2050257. http://dx.doi.org/10.1142/s0218126620502576.

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Orthogonal frequency division multiplexing (OFDM) is a multicarrier transmission system that can achieve high data rate over wireless channels. At the same time, multiple input multiple output OFDM (MIMO-OFDM) in wireless communication systems has been exposed to offer significant improvement over wireless technology by providing transmit diversity. It has become a promising technique for high-performance 5G broadband wireless communications. However, the main problem associated with MIMO-OFDM is that its signal exhibits high peak-to-average power ratio (PAPR), which causes nonlinear distortio

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Jit Singh, Mandeep Singh, Wan Syahrum Wan Saleh, Amer T. Abed, and Muhammad Ashraf Fauzi. "A Review on Massive MIMO Antennas for 5G Communication Systems on Challenges and Limitations." Jurnal Kejuruteraan 35, no. 1 (2023): 95–103. http://dx.doi.org/10.17576/jkukm-2023-35(1)-09.

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High data rate transfers, high-definition streaming, high-speed internet, and the expanding of the infrastructure such as the ultra-broadband communication systems in wireless communication have become a demand to be considered in improving quality of service and increase the capacity supporting gigabytes bitrate. Massive Multiple-Input Multiple-Output (MIMO) systems technology is evolving from MIMO systems and becoming a high demand for fifth-generation (5G) communication systems and keep expanding further. In the near future, massive MIMO systems could be the main wireless systems of communi

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29

Hoffmann, Leah. "Bringing stability to wireless connections." Communications of the ACM 64, no. 2 (2021): 120. http://dx.doi.org/10.1145/3441293.

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30

Pawelec, J., M. Suchański, K. Kosmowski, and T. Szymczyk. "The OSA-MIMO Technologies for Future Wireless Communications." Universal Journal of Communications and Network 1, no. 2 (2013): 56–59. http://dx.doi.org/10.13189/ujcn.2013.010204.

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31

Chen, Hongyang, Fauzia Ahmad, Sergiy Vorobyov, and Fatih Porikli. "Tensor Decompositions in Wireless Communications and MIMO Radar." IEEE Journal of Selected Topics in Signal Processing 15, no. 3 (2021): 438–53. http://dx.doi.org/10.1109/jstsp.2021.3061937.

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32

Haykin, S., K. Huber, and Z. Chen. "Bayesian Sequential State Estimation for MIMO Wireless Communications." Proceedings of the IEEE 92, no. 3 (2004): 439–54. http://dx.doi.org/10.1109/jproc.2003.823143.

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33

Blum, R. S., H. Bolcskei, M. P. Fitz, B. Hughes, and A. J. Paulraj. "Guest editorial special issue on mimo wireless communications." IEEE Transactions on Signal Processing 51, no. 11 (2003): 2709. http://dx.doi.org/10.1109/tsp.2003.818198.

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34

Castillo-Soria, F. R., Joaquin Cortez, C. A. Gutiérrez, M. Luna-Rivera, and A. Garcia-Barrientos. "Extended quadrature spatial modulation for MIMO wireless communications." Physical Communication 32 (February 2019): 88–95. http://dx.doi.org/10.1016/j.phycom.2018.11.006.

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35

Sapenov, Yerzhan, Anas Chaaban, Zouheir Rezki, Mohamed Abdallah, Khalid Qaraqe, and Mohamed-Slim Alouini. "Diversity Order Results for MIMO Optical Wireless Communications." IEEE Wireless Communications Letters 7, no. 1 (2018): 74–77. http://dx.doi.org/10.1109/lwc.2017.2755011.

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36

Hazer Sahlabadi, Mehran, Abdolali Abdipour, and Abbas Mohammadi. "A seven-port receiver for MIMO wireless communications." Analog Integrated Circuits and Signal Processing 101, no. 2 (2019): 243–53. http://dx.doi.org/10.1007/s10470-019-01508-9.

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Agrawal, Anurag Vijay, and Meenakshi Rawat. "Reliable Integrated Satellite Terrestrial Communications using MIMO for Mitigation of Microwave Absorption by Earths Oxygen." Defence Science Journal 69, no. 5 (2019): 458–63. http://dx.doi.org/10.14429/dsj.69.14951.

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Microwaves are used to communicate with satellite and terrestrial communication networks. But as microwaves pass through the Earth’s atmosphere, the oxygen gas absorbs microwave. In this 5G era, when the whole world is moving towards high data-rates and reliable communications, this absorption affects the data transmission in Integrated Satellite/Terrestrial Communication (ISTC) systems, which leads to degradation of the system performance. The multiple-input-multiple-output (MIMO) technology has become a boon for modern wireless communication systems to achieve the necessities of higher data-

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Nej, Sanjukta, Anumoy Ghosh, Sarosh Ahmad, Adnan Ghaffar, and Mousa Hussein. "Compact Quad Band MIMO Antenna Design with Enhanced Gain for Wireless Communications." Sensors 22, no. 19 (2022): 7143. http://dx.doi.org/10.3390/s22197143.

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In this paper, a novel microstrip line-fed meander-line-based four-elements quad band Multiple Input and Multiple Output (MIMO) antenna is proposed with a gain enhancement technique. The proposed structure resonates at four bands simultaneously, that is, 1.23, 2.45, 3.5 and 4.9 GHz, which resemble GPS L2, Wi-Fi, Wi-MAX and WLAN wireless application bands, respectively. The unit element is extended to four elements MIMO antenna structure exhibiting isolation of more than 22 dB between the adjacent elements without disturbing the resonant frequencies. In order to enhance the gain, two orthogonal

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Zaki, Amira I., Mahmoud Nassar, Moustafa H. Aly, and Waleed K. Badawi. "A Generalized Spatial Modulation System Using Massive MIMO Space Time Coding Antenna Grouping." Entropy 22, no. 12 (2020): 1350. http://dx.doi.org/10.3390/e22121350.

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Massive multiple input multiple output (MIMO), also known as a very large-scale MIMO, is an emerging technology in wireless communications that increases capacity compared to MIMO systems. The massive MIMO communication technique is currently forming a major part of ongoing research. The main issue for massive MIMO improvements depends on the number of transmitting antennas to increase the data rate and minimize bit error rate (BER). To enhance the data rate and BER, new coding and modulation techniques are required. In this paper, a generalized spatial modulation (GSM) with antenna grouping s

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Al-Ani, N. M. K., O. A. S. Al-Ani, M. F. Mosleh, and R. A. Abd-Alhameed. "A Design of MIMO Prototype in C-Band Frequency for Future Wireless Communications." Advanced Electromagnetics 9, no. 1 (2020): 78–84. http://dx.doi.org/10.7716/aem.v9i1.1333.

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The main challenges of MIMO design for future wireless communication is size reduction which leads to more mutual coupling. This paper deals with this problem in order to mitigate the impact of mutual coupling by proposing four elements MIMO prototype each one having a dual polarized patch rectangular microstrips. The idea is to insert annular rectangular opened one ribs in front of each microstrip and in corresponding to circular ring slot etched has etched in the ground. The advantage of such slot is to obtain regular radiation pattern distributed around device body. The four elements with e

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P., Karrupusamy. "MIMO BASED HIGH SPEED OPTICAL FIBER COMMUNICATION SYSTEM." December 2019 2019, no. 02 (2019): 107–16. http://dx.doi.org/10.36548/jei.2019.2.006.

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As the telecommunication services totally relies on the optical fiber for extending communications, it necessary that the optical communication system be capable of handling high speed, multiple channels and long haul signal transmission. recently the emergence of the optical coherent 100 GB/s and the digital signal processing has made possible the perfect signal transmission even for the MIMO (multiple input multiple output system) as they are well reformed to permit multiple wireless signal that holds different carrier frequencies. So the optical fiber system has become prominent among the a

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42

Ahmed, Md Firoz, Md Tahidul Islam, and Abu Zafor Md. Touhidul Islam. "Performance of Convolution and CRC Channel Encoded V-Blast 4x4 MIMO MC-CDMA Wireless Communication System." International Journal of Ambient Systems and Applications 9, no. 2 (2021): 1–6. http://dx.doi.org/10.5121/ijasa.2021.9201.

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Wireless communications are among the rapidly growing fields in our current life and have a massive effect on every aspect of our everyday life. In this paper, the performance of the various digital modulation techniques (BPSK, DPSK, QPSK, and QAM) based wireless communication system on the audio signal transmission through the additive Gaussian Noise (AWGN) channel is assessed on the basis of bit error rate (BER) as a function of the signal-to-noise ratio (SNR). Based on the results of this study, BPSK modulation outperforms the DPSK, QPSK, and QAM modulation strategies in the MIMO MC-CDMA VB

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Khaleel, Sherif A., Ehab K. I. Hamad, Naser Ojaroudi Parchin, and Mohamed B. Saleh. "MTM-Inspired Graphene-Based THz MIMO Antenna Configurations Using Characteristic Mode Analysis for 6G/IoT Applications." Electronics 11, no. 14 (2022): 2152. http://dx.doi.org/10.3390/electronics11142152.

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6G wireless communications will be immersed in the future with different applications. It is expected to support all IoT services and satellite communications, and it is expected to support artificial intelligence (AI) and machine learning (ML). The THz frequency band has a vital role in 6G communication. In this study, a new graphene plasmonic two-port Terahertz (THz) MIMO antenna is analyzed by the characteristic mode theory (CMA), which gives a better insight into the physical behavior of the MIMO configurations. The proposed MIMO antenna is compact and designed on a Teflon substrate of 130

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Markiewicz, Tomasz G., and Krzysztof W. Wesołowski. "Cryogenic Cooling in Wireless Communications." Entropy 21, no. 9 (2019): 832. http://dx.doi.org/10.3390/e21090832.

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Improving the capacity and performance of communication systems is typically achieved by either using more bandwidth or enhancing the effective signal-to-noise ratio (SNR). Both approaches have led to the invention of various transmission techniques, such as forward error correction (FEC), multiple-input multiple-output (MIMO), non-orthogonal multiple access (NOMA), and many, many others. This paper, however, focuses on the idea that should be immediately apparent when looking at Shannon’s channel capacity formula, but that somehow remained less explored for decades, despite its (unfortunately

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Shi, Yan, Lu Zhang, and Chang-Hong Liang. "Dual Zeroth-Order Resonant USB Dongle Antennas for 4G MIMO Wireless Communications." International Journal of Antennas and Propagation 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/816051.

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A multiband multiple-input multiple-output (MIMO) antenna system consisting of two antenna elements has been proposed for 4G USB dongle application. The designed MIMO antenna system with a compact volume of 25 mm × 30 mm × 3.5 mm operates in two zeroth-order resonance (ZOR) modes to cover the LTE band 13 (746–787 MHz), GSM850/900 (824–960 MHz), and LTE band 7 (2500–2690 MHz) simultaneously. A pair of L-shaped parasitic strips and an etching slot on the ground are employed to achieve good isolation between two elements. Measurement results show that proposed MIMO antenna system has total effici

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Hikmat Abd, Reem, and Hussein Ali Abdulnabi. "Design of graphene-based multi-input multi-output antenna for 6G/IoT applications." Indonesian Journal of Electrical Engineering and Computer Science 31, no. 1 (2023): 212. http://dx.doi.org/10.11591/ijeecs.v31.i1.pp212-221.

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In the future, 6G wireless communications will be integrated into various applications. It is expected that it will handle all Internet of Things services as well as satellite communications. Additionally, it is predicted to support machine learning (ML) and artificial intelligence (AI). So this work investigated four orthogonal ports graphene-based multiple-input and multiple-output (MIMO) antenna in the terahertz frequency regime. With wide-band (7.1-13) THz, minimum return loss close to -30 dB and a good isolation value. That was designed over silicon dioxide (Sio2) 100×100 substrate with a

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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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Lee, Sang-Hoon, Ahmed Al Amin, and Soo-Young Shin. "Orbital Angular Momentum-Based Multiple-Input-Multiple- Output with Receive Antenna Shift Keying for 6G." Electronics 10, no. 13 (2021): 1567. http://dx.doi.org/10.3390/electronics10131567.

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Spectral efficiency is a major concern for future 6G wireless communication systems. Thus, an appropriate scheme is needed to provide channel capacity improvement for multiple transmitters and receiver-based wireless communication systems without consuming extra resource for communication (e.g., frequency/time/code) or causing interference. Therefore, to fulfill the mentioned requirements for the future 6G wireless network, orbital angular momentum-based multiple-input-multiple-output (OAM-MIMO) multiplexing technique is incorporated with the receive antenna shift keying (RASK) technique in th

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Ding, Mingjun, Xiaodong Yang, Rui Hu, Zhitao Xiao, Jun Tong, and Jiangtao Xi. "On Matrix Completion-Based Channel Estimators for Massive MIMO Systems." Symmetry 11, no. 11 (2019): 1377. http://dx.doi.org/10.3390/sym11111377.

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Large-scale symmetric arrays such as uniform linear arrays (ULA) have been widely used in wireless communications for improving spectrum efficiency and reliability. Channel state information (CSI) is critical for optimizing massive multiple-input multiple-output(MIMO)-based wireless communication systems. The acquisition of CSI for massive MIMO faces challenges such as training shortage and high computational complexity. For millimeter wave MIMO systems, the low-rankness of the channel can be utilized to address the challenge of training shortage. In this paper, we compared several channel est

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Ghayoula, E., A. Bouallegue, R. Ghayoula, and J.-Y. Chouinard. "Capacity and Performance of MIMO systems for Wireless Communications." Journal of Engineering Science and Technology Review 7, no. 3 (2014): 108–11. http://dx.doi.org/10.25103/jestr.073.17.

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