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Journal articles on the topic 'Multiple-Input Multiple-Output (MIMO) Systems'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 September 2023

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1

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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Smallwood, David. "Minimum Input Trace for Multiple Input Multiple Output Linear Systems." Journal of the IEST 56, no. 2 (2013): 57–67. http://dx.doi.org/10.17764/jiet.56.2.41344333010617q6.

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Specification of the cross spectra for a multiple-input/multiple-output (MIMO) vibration test is challenging. This paper presents a method for tests where the specifications of the output (the control points) autospectra are available. The autospectra of the outputs are specified and cross spectra between the outputs are derived that will minimize the trace of the autospectra of the inputs (the drive signals) with the constraint that the input spectral density matrix is positive definite. The hypothesis is that nature likes a minimum energy solution.

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Ibrahim, Sarmad Khaleel, and Saif A. Abdulhussien. "Performance evaluation of precoding system for massive multiple-input multiple-output." Bulletin of Electrical Engineering and Informatics 11, no. 4 (2022): 2054–61. http://dx.doi.org/10.11591/eei.v11i4.3877.

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Low latency, high data speeds, and a higher degree of perceived service quality for consumers and base station capacity are only some of the advantages of fifth generation (5G) mobile communications. This paper focuses on the design of a precoding system for downlink transmission of multi-user multiple-input multiple-output (MU-MIMO). For MU-MIMO systems, the traditional precoding techniques investigated are difficult since the transmitter precoding matrices created by singular value decomposition (SVD) are calculated twice. This paper implements different techniques of precoding with channel

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Heath, Robert W., Erik G. Larsson, Ross Murch, Arye Nehorai, and Murat Uysal. "Special Issue: Multiple-Input Multiple-Output (MIMO) Communications." Wireless Communications and Mobile Computing 4, no. 7 (2004): 693–96. http://dx.doi.org/10.1002/wcm.247.

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Smallwood, David O. "Multiple-Input Multiple-Output (MIMO) Linear Systems Extreme Inputs/Outputs." Shock and Vibration 14, no. 2 (2007): 107–31. http://dx.doi.org/10.1155/2007/701837.

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A linear structure is excited at multiple points with a stationary normal random process. The response of the structure is measured at multiple outputs. If the autospectral densities of the inputs are specified, the phase relationships between the inputs are derived that will minimize or maximize the trace of the autospectral density matrix of the outputs. If the autospectral densities of the outputs are specified, the phase relationships between the outputs that will minimize or maximize the trace of the input autospectral density matrix are derived. It is shown that other phase relationships

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Lai, I.-Wei, Jhih-Wei Shih, Che-Wei Lee, et al. "Spatial Permutation Modulation for Multiple-Input Multiple-Output (MIMO) Systems." IEEE Access 7 (2019): 68206–18. http://dx.doi.org/10.1109/access.2019.2918710.

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Singhwal, Sumer Singh. "Novel Flower-Shaped Multiple Input Multiple Output Dielectric Resonator Antenna." Acta Marisiensis. Seria Technologica 19, no. 1 (2022): 9–12. http://dx.doi.org/10.2478/amset-2022-0002.

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Abstract In modern communication systems, dielectric resonator antennas (DRA) play an important role due to its several advantages over contemporary antennas. In this paper, novel flower-shaped multiple input multiple output (MIMO) DRA is proposed for wireless applications in X- band. The proposed antenna with four ports displays more than -15 dB isolation between ports with defected ground technique. The antenna exhibits 7.2-7.5 GHZ impedance bandwidth and 4.66 dBi gain at 7.3 GHz. MIMO performance parameters: Envelope Correlation Coefficient (ECC) and Diversity Gain (DG) of the proposed ante

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Naeem, Muddasar, Giuseppe De Pietro, and Antonio Coronato. "Application of Reinforcement Learning and Deep Learning in Multiple-Input and Multiple-Output (MIMO) Systems." Sensors 22, no. 1 (2021): 309. http://dx.doi.org/10.3390/s22010309.

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The current wireless communication infrastructure has to face exponential development in mobile traffic size, which demands high data rate, reliability, and low latency. MIMO systems and their variants (i.e., Multi-User MIMO and Massive MIMO) are the most promising 5G wireless communication systems technology due to their high system throughput and data rate. However, the most significant challenges in MIMO communication are substantial problems in exploiting the multiple-antenna and computational complexity. The recent success of RL and DL introduces novel and powerful tools that mitigate iss

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Zhao, Yongdong, and Suhada Jayasuriya. "A New Formulation of Multiple-Input Multiple-Output Quantitative Feedback Theory." Journal of Dynamic Systems, Measurement, and Control 118, no. 4 (1996): 748–52. http://dx.doi.org/10.1115/1.2802352.

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The QFT robust performance problem in its entirety may be reduced to an H∞ problem by casting each specification as a frequency domain constraint on the nominal sensitivity function and the complementary sensitivity function. It is shown that the existence of a solution to a standard Ha. problem guarantees a solution to the QFT problem whereas the existence of a QFT solution does not necessarily guarantee an H∞ solution. A solution obtained via this formulation for the QFT problem is in general more conservative when compared to what may be obtained from classical QFT loopshaping. However, one

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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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Swapna, Sonti. "Channel Estimation for MIMO Systems." International Journal for Research in Applied Science and Engineering Technology 10, no. 1 (2022): 201–4. http://dx.doi.org/10.22214/ijraset.2022.39776.

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Abstract: A combination of multiple-input multiple-output (MIMO) systems and orthogonal frequency division multiplexing (OFDM) technologies can be employed in modern wireless communication systems to achieve high data rates and improved spectrum efficiency. For multiple input multiple output (MIMO) systems, this paper provides a Rayleigh fading channel estimation technique based on pilot carriers. The channel is estimated using traditional Least Square (LS) and Minimum Mean Square (MMSE) estimation techniques. The MIMO-OFDM system's performance is measured using the Bit Error Rate (BER) and Me

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Eissa, M., and D. Y. Sukhanov. "Design and analysis of multiple-input multiple output (MIMO) system for research purposes." Proceedings of Tomsk State University of Control Systems and Radioelectronics 25, no. 2 (2022): 22–28. http://dx.doi.org/10.21293/1818-0442-2022-25-2-22-28.

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Systems with multiple input and multiple output (MIMO) play a key role in modern wireless communication devices. MIMO are used in wireless networks to increase channel throughput and transmission reliability. The implementation of the MIMO system will speed up research in the field of improving communication systems. In this article, we present a system-level analysis of a block level analog RF receiver in a MIMO system in accordance with the performance requirements described in the 3GPP Long-Term Evolution standard. An analytical study of the analog receiving part was carried out. The result

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Lee, Woon-Sang, Jae-Hyun Ro, Young-Hwan You, Duckdong Hwang, and Hyoung-Kyu Song. "An Enhanced Precoder for Multi User Multiple-Input Multiple-Output Downlink Systems." Applied Sciences 10, no. 13 (2020): 4547. http://dx.doi.org/10.3390/app10134547.

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Recently, as the demand for data rate of users has increased, wireless communication systems have aimed to offer high throughput. For this reason, various techniques which guarantee high performance have been invented, such as massive multiple-input multiple-output (MIMO). However, the implementation of huge base station (BS) antenna array and decrease of reliability as the number of users increases are chief obstacles. In order to mitigate these problems, this paper proposes an adaptive precoder which provides high throughput and bit error rate (BER) performances to achieve the desired data r

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Mo, Hongbo, Wei Xu, and Zhimin Zeng. "Investigation on Beamspace Multiple-Input Multiple-Output Synthetic Aperture Radar Data Imaging." International Journal of Antennas and Propagation 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/2706836.

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The multiple-input multiple-output (MIMO) technique can improve the high-resolution wide-swath imaging capacity of synthetic aperture radar (SAR) systems. Beamspace MIMO-SAR utilizes multiple subpulses transmitted with different time delays by different transmit beams to obtain more spatial diversities based on the relationship between the time delay and the elevation angle in the side-looking radar imaging geometry. This paper presents a beamspace MIMO-SAR imaging approach, which takes advantage of real time digital beamforming (DBF) with null steering in elevation and azimuth multichannel ra

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Almeida, Alexandre Marques de, Marcelo Kaminski Lenzi, and Ervin Kaminski Lenzi. "A Survey of Fractional Order Calculus Applications of Multiple-Input, Multiple-Output (MIMO) Process Control." Fractal and Fractional 4, no. 2 (2020): 22. http://dx.doi.org/10.3390/fractalfract4020022.

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Multiple-input multiple-output (MIMO) systems are usually present in process systems engineering. Due to the interaction among the variables and loops in the MIMO system, designing efficient control systems for both servo and regulatory scenarios remains a challenging task. The literature reports the use of several techniques mainly based on classical approaches, such as the proportional-integral-derivative (PID) controller, for single-input single-output (SISO) systems control. Furthermore, control system design approaches based on derivatives and integrals of non-integer order, also known as

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Mao, Yun, Ying Guo, Jun Peng, Xueqin Jiang, and Moon Ho Lee. "Double-Layer Low-Density Parity-Check Codes over Multiple-Input Multiple-Output Channels." International Journal of Antennas and Propagation 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/716313.

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We introduce a double-layer code based on the combination of a low-density parity-check (LDPC) code with the multiple-input multiple-output (MIMO) system, where the decoding can be done in both inner-iteration and outer-iteration manners. The present code, called low-density MIMO code (LDMC), has a double-layer structure, that is, one layer defines subcodes that are embedded in each transmission vector and another glues these subcodes together. It supports inner iterations inside the LDPC decoder and outeriterations between detectors and decoders, simultaneously. It can also achieve the desire

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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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Nursal, Firdaus, Rahmadi Kurnia, and Ikhwana Elfitri. "Ultra Wideband (UWB) Multiple Input and Multiple Output (MIMO) Antenna Design : A Review." Andalas Journal of Electrical and Electronic Engineering Technology 3, no. 1 (2023): 35–43. http://dx.doi.org/10.25077/ajeeet.v3i1.33.

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Since the Federal Communication Commission (FCC) issued a license for the 3.1 – 10.6 GHz frequency spectrum for unlicensed radio applications, many papers have been published regarding ultrawideband (UWB) antenna design. The issue of UWB antenna design is determining how to create an antenna with a wide bandwidth, capable of rejecting communication systems that coexist with UWB bands, and capable of designing UWB antennas for multiple input multiple output (MIMO) communication system applications. This study examines the design of UWB antennas with monopole and slot types based on evaluations

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Zhang, Q. "Adaptive observer for multiple-input-multiple-output (MIMO) linear time-varying systems." IEEE Transactions on Automatic Control 47, no. 3 (2002): 525–29. http://dx.doi.org/10.1109/9.989154.

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Raheja, Dinesh Kumar, Sachin Kumar, Shubhro Chakrabartty, and Binod Kumar Kanaujia. "Design and Development of a Triple-Band Multiple-Input–Multiple-Output Antenna for Sensing Applications." Micromachines 13, no. 12 (2022): 2240. http://dx.doi.org/10.3390/mi13122240.

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In this article, a triple-band quad-element stacked multiple-input–multiple-output (MIMO) antenna is proposed for sensing applications. Each radiating element of the presented MIMO antenna consists of a diagonally truncated square patch, which is proximity coupled to the elliptical radiating patch. The proposed MIMO antenna is designed to resonate for three frequencies (4.2, 4.8, and 5.8 GHz) in the C-band range. The antenna shows circular polarization characteristics at 4.2 and 4.8 GHz frequencies. Each stacked element of the proposed antenna is excited independently through a 50 Ω coaxial fe

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Häring, L., and A. Czylwik. "Synchronization in MIMO OFDM systems." Advances in Radio Science 2 (May 27, 2005): 147–53. http://dx.doi.org/10.5194/ars-2-147-2004.

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Abstract. In this paper, an overview of carrier frequency offset (CFO) estimation algorithms for Orthogonal Frequency Division Multiplexing (OFDM) systems is presented. It is well-known that multicarrier systems suffer from their high sensitivity to mismatches of transmitter and receiver oscillator frequencies. The performance degrades since the CFO destroys the orthogonality of the subcarriers. Hence, extensive research has been done on the estimation and correction of the CFO in Single-Input Single-Output (SISO) systems. Mainly, the proposed algorithms can be categorized into data-aided and

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Khan, Imran, Mohammad Zafar, Majid Ashraf, and Sunghwan Kim. "Computationally Efficient Channel Estimation in 5G Massive Multiple-Input Multiple-output Systems." Electronics 7, no. 12 (2018): 382. http://dx.doi.org/10.3390/electronics7120382.

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Traditional channel estimation algorithms such as minimum mean square error (MMSE) are widely used in massive multiple-input multiple-output (MIMO) systems, but require a matrix inversion operation and an enormous amount of computations, which result in high computational complexity and make them impractical to implement. To overcome the matrix inversion problem, we propose a computationally efficient hybrid steepest descent Gauss–Seidel (SDGS) joint detection, which directly estimates the user’s transmitted symbol vector, and can quickly converge to obtain an ideal estimation value with a few

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Keun Chul Hwang and Kwang Bok Lee. "Joint transmit and receive filters design for multiple-input multiple-output (MIMO) systems." IEEE Transactions on Wireless Communications 4, no. 4 (2005): 1635–49. http://dx.doi.org/10.1109/twc.2005.846999.

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Cao, Junjun, Junliang Cao, Zheng Zeng, and Lian Lian. "Nonlinear multiple-input-multiple-output adaptive backstepping control of underwater glider systems." International Journal of Advanced Robotic Systems 13, no. 6 (2016): 172988141666948. http://dx.doi.org/10.1177/1729881416669484.

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In this article, an adaptive backstepping control is proposed for multi-input and multi-output nonlinear underwater glider systems. The developed method is established on the basis of the state-space equations, which are simplified from the full glider dynamics through reasonable assumptions. The roll angle, pitch angle, and velocity of the vehicle are considered as control objects, a Lyapunov function consisting of the tracking error of the state vectors is established. According to Lyapunov stability theory, the adaptive control laws are derived to ensure the tracking errors asymptotically c

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Abdul-Hadi, Alaa M., Marwah Abdulrazzaq Naser, Muntadher Alsabah, Sadiq H. Abdulhussain, and Basheera M. Mahmmod. "Performance evaluation of frequency division duplex (FDD) massive multiple input multiple output (MIMO) under different correlation models." PeerJ Computer Science 8 (June 21, 2022): e1017. http://dx.doi.org/10.7717/peerj-cs.1017.

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Massive multiple-input multiple-output (massive-MIMO) is considered as the key technology to meet the huge demands of data rates in the future wireless communications networks. However, for massive-MIMO systems to realize their maximum potential gain, sufficiently accurate downlink (DL) channel state information (CSI) with low overhead to meet the short coherence time (CT) is required. Therefore, this article aims to overcome the technical challenge of DL CSI estimation in a frequency-division-duplex (FDD) massive-MIMO with short CT considering five different physical correlation models. To th

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Solyman, Ahmad AA, Hani Attar, Mohammad R. Khosravi, and Baki Koyuncu. "MIMO-OFDM/OCDM low-complexity equalization under a doubly dispersive channel in wireless sensor networks." International Journal of Distributed Sensor Networks 16, no. 6 (2020): 155014772091295. http://dx.doi.org/10.1177/1550147720912950.

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In this article, three novel systems for wireless sensor networks based on Alamouti decoding were investigated and then compared, which are Alamouti space–time block coding multiple-input single-output/multiple-input multiple-output multicarrier modulation (MCM) system, extended orthogonal space–time block coding multiple-input single-output MCM system, and multiple-input multiple-output system. Moreover, the proposed work is applied over multiple-input multiple-output systems rather than the conventional single-antenna orthogonal chirp division multiplexing systems, based on the discrete frac

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Nilofer, Shaik. "A Review of Massive Multiple Input Multiple Output for 5G Communication: Benefits and Challenges." International Journal of Intelligent Communication, Computing and Networks 1, no. 1 (2020): 22–26. http://dx.doi.org/10.51735/ijiccn/001/09.

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Massive MIMO (mMIMO) systems become a primary advantage to overcome the problem of bandwidth restrictions. It improves the channel capacity of remote systems.The paper reviews about mMIMO systems. mMIMO consists of several number of antennas at base station (BS) which improves spectrum efficacy. The extra benefit of the mMIMO system is that the components cost is low because of utilization of less power components. The paper also discusses about the channel estimation at the BS and generally time division mode (TDD) is assumed for mMIMO systems. The paper also discusses system model, benefits

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Shao, Yuehjen E., and Yu-Ting Hu. "Using Machine Learning Classifiers to Recognize the Mixture Control Chart Patterns for a Multiple-Input Multiple-Output Process." Mathematics 8, no. 1 (2020): 102. http://dx.doi.org/10.3390/math8010102.

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A statistical process control (SPC) chart is one of the most important techniques for monitoring a process. Typically, a certain root cause or a disturbance in a process would result in the presence of a systematic control chart pattern (CCP). Consequently, the effective recognition of CCPs has received considerable attention in recent years for their potential use in improving process quality. However, most studies have focused on the recognition of CCPs for SPC applications alone. Specifically, even though numerous studies have addressed the increased use of the SPC and engineering process c

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Wajeeh Abdullah, Laith, Qasim Hadi Kareem, and Adheed Hasan Sallomi. "A quad-port multiple-input-multiple-output system for underlay or interweave cognitive radio." Indonesian Journal of Electrical Engineering and Computer Science 29, no. 3 (2023): 1480. http://dx.doi.org/10.11591/ijeecs.v29.i3.pp1480-1495.

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<span lang="EN-US">This paper presents a four-element frequency reconfigurable antenna system that is novel in terms of gathering both underlay and interweave cognitive radio in a single multiple input, multiple output (MIMO) design. Built on a 50×38×0.8 mm3 Rogers RT/Duroid 5880 substrate, this system is constructed of two scanning elements to sense ultra-wide band (UWB) with controllable band notching capabilities and two elements act as communication antennas. Eighteen MIMO modes can be provided depending on the state of the five positive-intrinsic-negative (PIN) diodes in each sensin

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Meyer, E., D. Kruglov, M. Krivic, et al. "The state of the art in beyond 5G distributed massive multiple-input multiple-output communication system solutions." Open Research Europe 2 (September 2, 2022): 106. http://dx.doi.org/10.12688/openreseurope.14501.1.

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Beyond fifth generation (5G) communication systems aim towards data rates in the tera bits per second range, with improved and flexible coverage options, introducing many new technological challenges in the fields of network architecture, signal processing, and radio frequency front-ends. One option is to move towards cell-free, or distributed massive Multiple-Input Multiple-Output (MIMO) network architectures and highly integrated front-end solutions. This paper presents an outlook on beyond 5G distributed massive MIMO communication systems, the signal processing, characterisation and simulat

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Al Ayidh, Abdulrahman, Yusuf Sambo, Sofiat Olaosebikan, Shuja Ansari, and Muhammad Ali Imran. "Antenna Selection Based on Matching Theory for Uplink Cell-Free Millimetre Wave Massive Multiple Input Multiple Output Systems." Telecom 3, no. 3 (2022): 448–66. http://dx.doi.org/10.3390/telecom3030024.

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In this paper, we propose a hybrid beamforming architecture with constant phase shifters (CPSs) for uplink cell-free millimetre-wave (mm-Wave) massive multiple-input multiple-output (MIMO) systems based on exploiting antenna selection to reduce power consumption. However, current antenna selection techniques are applied for conventional massive MIMO, not cell-free massive MIMO systems. Therefore, the enormous computational complexity of these techniques to optimally select antennas for cell-free massive MIMO networks is caused by numerous randomly distributed access points (APs) in the service

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Mohd Basir, Shafinaz, Idnin Pasya, Tajmalludin Yaakob, Nur Emileen Abd Rashid, and Takehiko Kobayashi. "Improvement of Doppler measurement using multiple-input multiple-output (MIMO) concept in radar-based automotive sensor detecting pedestrians." Sensor Review 38, no. 2 (2018): 239–47. http://dx.doi.org/10.1108/sr-04-2017-0060.

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Purpose This paper aims to present an approach of utilizing multiple-input multiple-output (MIMO) radar concept to enhance pedestrian classification in automotive sensors. In a practical environment, radar signals reflected from pedestrians and slow-moving vehicles are similar in terms of reflecting angle and Doppler returns, inducing difficulty for target discrimination. An efficient discrimination between the two targets depends on the ability of the sensor to extract unique characteristics from each target, for example, by exploiting Doppler signatures. This study describes the utilization

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Cvetkovski, Darko, Thomas Schlegel, and Eckhard Grass. "Experimental evaluation of line-of-sight multiple input multiple output (MIMO) transmission for sub-6 GHz carrier frequencies." Frequenz 75, no. 5-6 (2021): 165–75. http://dx.doi.org/10.1515/freq-2020-0135.

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Abstract For the next generation wireless networks, backhaul links with data rates of several Gbit/s are required. Line-of-Sight-MIMO with optimally arranged antennas can exploit the full multiplexing gain of orthogonal MIMO streams to achieve high throughput, as shown in recent works utilizing the 60 GHz mm wave band. In contrast, conventional MIMO systems operating at sub-6 GHz carrier frequencies, as utilized in modern WLAN networks, rely on rich scattering channels to enable reliable transmissions. In this work, we explore the feasibility of applying the LoS-MIMO concept to wireless single

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Fan, Jin Hong. "Transmission Scheme of MIMO Two-Way Relaying Systems Based on Symmetric Channel." Applied Mechanics and Materials 325-326 (June 2013): 452–55. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.452.

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There are fading and noise in MIMO two-way relaying system. A novel transmission scheme was proposed. The scheme performs equivalent to a 2×2 V-BLAST MIMO(Multiple-Input Multiple-Output) and a two 2×1 AlAMOUTI MISO(Multiple-Input Single-Output) in multiple-access phase and broadcast phase respectively. Network coding and minimum mean square error detection are employed at the relay. Binary phase shift keying and 8 phase shift keying modulation is used. The performance is analyzed under the assumption of a symmetric relay channel model. Simulation results show that the proposed transmission sch

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Jian Yang and S. Roy. "On joint transmitter and receiver optimization for multiple-input-multiple-output (MIMO) transmission systems." IEEE Transactions on Communications 42, no. 12 (1994): 3221–31. http://dx.doi.org/10.1109/26.339844.

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Recioui, A. "Application of Multiple Input Multiple Output Power Line Communication (MIMO-PLC) to Power Systems." Acta Physica Polonica A 132, no. 3 (2017): 496–99. http://dx.doi.org/10.12693/aphyspola.132.496.

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Shatti, Ahmed Hussein, and Ehab Abdul Razzaq Hussein. "Massive multiple-input multiple-output channel estimation under hardware and channel impairments." Bulletin of Electrical Engineering and Informatics 12, no. 1 (2023): 215–23. http://dx.doi.org/10.11591/eei.v12i1.4025.

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Hardware problems are the most detrimental issues to channel estimates in wireless communication systems. Because of the enormous number of antennas at the base station (BS) in cellular massive multiple-input multiple-output (MIMO) systems and because one radio frequency (RF) chain per antenna is required, hardware impairments in such systems will be quite severe. Many research publications have used a quality-cost tradeoff to adjust for RF unit hardware issues. In this study, we have taken a different approach by reducing the error floor caused by impairments in the predicted channels. Here a

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Nawaf, Shahir Fleyeh, Lujain Sabah Abdula, and Abdulmutalib A.-Wahab Husein. "Reliability Achievement of MIMO-OFDM Communication Systems." International Conference on Applied Engineering and Natural Sciences 1, no. 1 (2023): 634–40. http://dx.doi.org/10.59287/icaens.1070.

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Wireless communication must have high spectral efficacy and the ability to resist fading channel in an environment of channel multipath, and it is difficult to achieve these requirements with traditional modulation techniques, but the Multiple system Input Multiple Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) It can fulfill these requirements. Research offers a way to improve the performance of OFDM- MIMO system by decreasing the Bit Error Rate (BER) using both (DWT) Discrete Wavelet Transform and Convolutional Coding (CC). The OFDM system is modeled with a single antenna at t

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Munir, Mehr E., Saad Hassan Kiani, Huseyin Serif Savci, et al. "mmWave Polarization Diversity Wideband Multiple-Input/Multiple-Output Antenna System with Symmetrical Geometry for Future Compact Devices." Symmetry 15, no. 9 (2023): 1641. http://dx.doi.org/10.3390/sym15091641.

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The fifth generation (5G) of mobile networks is a significant technological advancement in telecommunications that provides faster data speeds, lower latency, and greater network capacity. One of the key technologies that enables 5G is multiple-input/multiple-output (MIMO) antenna systems, which allow for the transmission and reception of multiple data streams simultaneously, improving network performance and efficiency. MIMO is essential to meeting the demand for higher data rates and improved network performance in 5G networks. This work presents a four-element MIMO antenna system dedicated

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Hoang Son, Vu Tran, and Dang Le Khoa. "BER Analysis for Downlink MIMO-NOMA Systems over Rayleigh Fading Channels." International journal of Computer Networks & Communications 13, no. 6 (2021): 93–108. http://dx.doi.org/10.5121/ijcnc.2021.13606.

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The Multiple-input multiple-output (MIMO) technique combined with non-orthogonal multiple access (NOMA) has been considered to enhance total system performance. This paper studies the bit error rate of two-user power-domain NOMA systems using successive interference cancellation receivers, with zeroforcing equalization over quasi-static Rayleigh fading channels. Successive interference cancellation technique at NOMA receivers has been the popular research topic due to its simple implementation, despite its vulnerability to error propagation. Closed-form expressions are derived for downlink NOM

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Hamid, Shahid, Shakti Raj Chopra, Akhil Gupta, et al. "Hybrid Beamforming in Massive MIMO for Next-Generation Communication Technology." Sensors 23, no. 16 (2023): 7294. http://dx.doi.org/10.3390/s23167294.

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Hybrid beamforming is a viable method for lowering the complexity and expense of massive multiple-input multiple-output systems while achieving high data rates on track with digital beamforming. To this end, the purpose of the research reported in this paper is to assess the effectiveness of the three architectural beamforming techniques (Analog, Digital, and Hybrid beamforming) in massive multiple-input multiple-output systems, especially hybrid beamforming. In hybrid beamforming, the antennas are connected to a single radio frequency chain, unlike digital beamforming, where each antenna has

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Kumar Sarangi, Ashish, Amrit Mukherjee, and Amlan Datta. "Capacity comparison of MIMO and cooperative MIMO." International Journal of Engineering & Technology 7, no. 1.1 (2017): 638. http://dx.doi.org/10.14419/ijet.v7i1.1.10794.

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To achieve high capacity and high data rates is the main requirement for today’s generation. This paper studies about the performance and capacity comparison of MIMO and cooperative MIMO systems. The comparison of capacity between multiple- input- multiple- output (MIMO) and cooperative MIMO systems helps us to know that which system have better performance and better capacity. The simulation results shows that among SISO, SIMO, MISO and MIMO system the capacity of MIMO will be better but in between MIMO and cooperative MIMO, Cooperative MIMO system have high capacity than MIMO systems.

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Therambath Rajanbabu, Delson, and Iven Jose. "Analysis and optimization of uplink spectral efficiency in massive multiple-input and multiple-output." Indonesian Journal of Electrical Engineering and Computer Science 28, no. 2 (2022): 830. http://dx.doi.org/10.11591/ijeecs.v28.i2.pp830-839.

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Fifth Generation (5G) specifications aims for data rate of 1 Gbps in high mobility and 10 Gbps in low mobility conditions, 15-30 bps/Hz of spectral efficiency with less than 1 milli second (ms) latency reduction. Massive multiple-input and multiple-output (Massive MIMO) is one of the promising technologies in 5G standard which offers a high spectral efficiency improvement. This work focus on the uplink scenario spectral efficiency in a Massive MIMO simulation network based on third generation partnership project (3GPP) and long term evolution (LTE) document of 5G. This work analyzes the spectr

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Sreesudha, P., T. Charitha, A. Vineela, K. Karishma, and K. Bhargavi. "Performance Analysis of Spatially Multiplexed MIMO System." International Journal for Research in Applied Science and Engineering Technology 11, no. 7 (2023): 781–85. http://dx.doi.org/10.22214/ijraset.2023.54656.

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Abstract: In SISO (single input and single output) system, refers to have only one input and one output. Here only one antenna is used at receiver and transmitter side. SISO are relatively simple to design and implement. They are of low cost and used in wide range of applications. However, SISO systems are poor in performance and deliver low data rate. So we’ll prefer MIMO (multiple input and multiple output) over SISO as it gives better spectral efficiency, improved reliability and good coverage. In MIMO we use multiple antennas at transmitter and receiver side which is known as Spatial Multi

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Hossain, Saddam, Md Izaz Arefin Mrida, Pradip Chandra Das, Abu Sayed, Nahid Rahman, and Md Mamunur Rashid. "Mimo Channel and Performance Analysis using OFDM System for Reduced Bit Error Rate." ABC Research Alert 3, no. 3 (2015): Bangladesh. http://dx.doi.org/10.18034/ra.v3i3.299.

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Multiple-input Multiple-output (MIMO) systems use multiple antennas at the transmitter and receiver end, are a key technology to meet the growing demand for high data rate wireless systems. The aim of this thesis is to investigate MIMO system capacity with the aim of achieving optimum Bit Error Rate (BER) while increasing the system capacity using multicarrier delay diversity modulation (MDDM), proposed for fifth generation systems. In principle, the capacity of MIMO system can increase linearly with the number of antennas. Multiple antennas at the transmitter and receiver provide diversity in

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Kadhim, Dheyaa Jasim, Muna Hadi Saleh, and Sadiq Jassim Abou-Loukh. "Evaluation of massive multiple-input multiple-output communication performance under a proposed improved minimum mean squared error precoding." IAES International Journal of Artificial Intelligence (IJ-AI) 12, no. 2 (2023): 984. http://dx.doi.org/10.11591/ijai.v12.i2.pp984-994.

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<span lang="EN-US">The fundamental of a downlink massive multiple-input multiple-output (MIMO) energy- issue efficiency strategy is known as minimum mean squared error (MMSE) implementation degrades the performance of a downlink massive MIMO energy-efficiency scheme, so some improvements are adding for this precoding scheme to improve its workthat is called our proposal solution as a proposed improved MMSE precoder (PIMP). The energy efficiency (EE) study has also taken into mind drastically lowering radiated power while maintaining high throughput and minimizing interference issues. We

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Remlein, Piotr. "Multiuser cpm transmission for mimo systems." Image Processing & Communications 18, no. 4 (2013): 59–65. http://dx.doi.org/10.2478/v10248-012-0093-0.

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Abstract Frequency-Division Multiplexed Continuous Phase Modulation (FDM-CPM) systems with Multiple Input Multiple Output (MIMO) transmission are investigated. In this paper, a multiuser reception scheme for CPM MIMO transmission is presented. The analyzed system is designed to achieve high spectral efficiency by exploiting the multiplexing gain of MIMO techniques. To take advantage of the multiplexing gain of MIMO systems, a Zero Forcing (ZF) MIMO detector and a low-complexity iterative algorithm for Inter- Carrier Interference (ICI) cancellation are considered. Numerical simulations have bee

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Hai, Han, Caiyan Li, Jun Li, Yuyang Peng, Jia Hou, and Xue-Qin Jiang. "Space-Time Block Coded Cooperative MIMO Systems." Sensors 21, no. 1 (2020): 109. http://dx.doi.org/10.3390/s21010109.

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The main objective of a Cooperative Multiple-Input Multiple-Output (CMIMO) system is to improve network throughput and network coverage and save energy. By grouping wireless devices as virtual multi-antenna nodes, it can thus simulate the functions of multi-antenna systems. A Space-Time Block Code (STBC) was proposed to utilize the spatial diversity of MIMO systems to improve the diversity gain and coding gain. In this paper, we proposed a cooperative strategy based on STBC and CMIMO, which is referred to as Space-Time Block Coded Cooperative Multiple-Input Multiple-Output (STBC-CMIMO) to inhe

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Parveen, Nagma, Khaizuran Abdullah, Md Rafiqul Islam, and Muhammad Aashed Khan Abbasi. "Performance Analysis Antenna Diversity Technique with Wavelet Transform Using Array Gain for Millimeter Wave Communication System." Electronics 11, no. 16 (2022): 2626. http://dx.doi.org/10.3390/electronics11162626.

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Utilizing antenna diversity techniques has become a well-known approach to improve the performance of wireless communication systems. Multiple antenna arrays with half-length spacing, such as a uniform linear array (ULA), have been taken into consideration. Since 60 GHz is an unlicensed frequency band and ideal for local propagation, it is where the technology is being used. The transmitter and receiver both accomplish QAM modulation and demodulation. The performance in terms of bit error rate (BER) was tested in MATLAB simulation software for all antenna diversity scenarios: the single input

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Mbarek, Abdelkader, and Kais Bouzrara. "Fault Tolerant Control for MIMO Nonlinear Systems via MPC Based on MIMO ARX-Laguerre Multiple Models." Mathematical Problems in Engineering 2019 (October 3, 2019): 1–26. http://dx.doi.org/10.1155/2019/9012182.

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In this article, we propose a fault tolerant control for multiple-input multiple-output (MIMO) nonlinear systems via model predictive control. The MIMO nonlinear systems are approximated by MIMO ARX-Laguerre multiple models. The latter is obtained by expanding a discrete-time MIMO ARX multiple model parameters on Laguerre orthonormal bases. The resulting model ensures an efficient complexity reduction with respect to the classical MIMO ARX multiple models. This parametric complexity reduction still subjects to an optimal choice of the Laguerre poles defining Laguerre bases. The parameter and s

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