scholarly journals Survey on Massive MIMO: Technology, Challenges, Opportunities and Benefits

YMER Digital ◽  
2021 ◽  
Vol 20 (11) ◽  
pp. 271-282
Author(s):  
Karthik Kumar Vaigandla ◽  
◽  
Dr.N Venu ◽  
Keyword(s):  
Mobile Communication ◽  
Massive Mimo ◽  
Mimo System ◽  
Communication Technologies ◽  
Wireless Access ◽  
Beam Forming ◽  
Spectrum Utilization ◽  
Simple Processing ◽  
Linear Algorithms ◽  
Mimo Technology

Wireless communication technologies have been studied and explored in response to the global shortage of bandwidth in the field of wireless access. Next-generation networks will be enabled by massive MIMO. Using relatively simple processing, it provides high spectral and energy efficiency by combining antennas at the receiver and transmitter. This paper discusses enabling technologies, benefits, and opportunities associated with massive MIMO, and all the fundamental challenges. Global enterprises, research institutions, and universities have focused on researching the 5G mobile communication network. Massive MIMO technologies will utilize simpler and linear algorithms for beam forming and decoding. As part of future 5G, massive MIMO technology will be used to increase the efficiency of spectrum utilization and channel capacity. The paper then summarizes the technologies that are used in massive MIMO system, including channel estimation, pre-coding, and signal detection.

scholarly journals Analysis of the massive MIMO technology

2021 ◽  
Vol 2061 (1) ◽  
pp. 012094
Author(s):  
N S Druzhinina ◽  
I M Daudov
Keyword(s):  
Antenna Array ◽  
Massive Mimo ◽  
Significant Contribution ◽  
Mimo System ◽  
Mimo Technology

Abstract The article discusses the features of the Massive MIMO technology, the structure of the antenna array, as well as the advantages and example of using the massive MIMO system. The use of Massive MIMO opens up new opportunities and makes a significant contribution to achieving the stated requirements for the further evolution of LTE and 5G.

scholarly journals Guided MAC to Enhance Quality of Experience of Video Data Transmission over Massive MIMO

2021 ◽  
Author(s):  
Diwakar Bhardwaj ◽  
Keyword(s):  
Massive Mimo ◽  
High Speed ◽  
Quality Of Experience ◽  
Mimo System ◽  
Video Data ◽  
Mac Layer ◽  
Mimo Channels ◽  
Noisy Channels ◽  
Mimo Technology

Massive MIMO (M-MIMO) system comprises of multiple number of antennas to achieve energy- efficiency and large gains in spectral-efficiency in comparison to existing MIMO technology. High speed and Quality of Experience (QoE) of video data over wireless communication has always been a challenge for the researchers due to scarcity of the bandwidth, fading and interference. The channels with high noise corrupt the transmitted video and results in poor QoE of at the receiver. Therefore, to maintain the quality of transmitted video, it is highly desirable to identify noisy channels and avoid transmission over them. This paper deals with QoE of the transmitted video over Massive MIMO channels. The channels are categorized into two categories: good and bad depending upon the value of Signal to Interference and Noise Ratio (SINR). A channel above the minimum acceptable value (threshold) of SINR is categorized as good channel otherwise bad channel. A Guided MAC layer (GMAC) protocol is designed to transmit the video data over good channels only and to discard the transmission over bad channels.

scholarly journals Massive MIMO Systems for 5G

2020 ◽  
Author(s):  
Robin Chataut ◽  
Robert Akl
Keyword(s):  
Energy Efficiency ◽  
Massive Mimo ◽  
Mimo Systems ◽  
Mimo System ◽  
Multiple Input Multiple Output ◽  
Visible Light Communication ◽  
User Scheduling ◽  
Access Technology ◽  
Input Multiple Output ◽  
Simple Processing

The global bandwidth shortage in the wireless communication sector has motivated the study and exploration of wireless access technology known as massive Multiple-Input Multiple-Output (MIMO). Massive MIMO is one of the key enabling technology for next-generation networks, which groups together antennas at both transmitter and the receiver to provide high spectral and energy efficiency using relatively simple processing. Obtaining a better understating of the massive MIMO system to overcome the fundamental issues such as pilot contamination, channel estimation, precoding, user scheduling, energy efficiency, and signal detection is vital for the successful deployment of 5G and beyond networks. Some of the recent trends in massive MIMO are terahertz communication, ultra massive MIMO (UM-MIMO), visible light communication (VLC), machine learning, and deep learning. 

scholarly journals A Survey on Multi-Layer Mimo for Lte/Lte-Advanced

2018 ◽  
Vol 7 (3.34) ◽  
pp. 234
Author(s):  
Anjana Devi.J ◽  
Dr R. Dhaya ◽  
Dr R. Kanthavel
Keyword(s):  
System Performance ◽  
Massive Mimo ◽  
Mimo System ◽  
Spatial Diversity ◽  
Multiple Streams ◽  
Key Technology ◽  
Main Design ◽  
Lte Advanced ◽  
Lower Complexity ◽  
Mimo Technology

The primary intention of the paper is to explore on various Multi-Layer MIMO approaches for the higher system performance. MIMO technique is said to be the key technology in LTE-A to achieve the spatial diversity in the system. Multi-Layer MIMO is the enhancement to the MIMO technology where multiple streams of data could be transferred to different layers for optimization with increased capacity in the network in high SNR condition. In a massive MIMO system, the cell interference hinders the system performance due to high channel dimensionality. The main design objective of the Multi-Layer MIMO techniques studied is to reduce the Cell Interference with lower complexity.  

Research on 5G Video Security Communication Technology Based on Massive MIMO

2021 ◽  
Vol 14 ◽  
Author(s):  
Guozheng Li ◽  
Heling Jiang ◽  
Mohammad Asif Ikbal
Keyword(s):  
Mobile Communication ◽  
Massive Mimo ◽  
Large Scale ◽  
Multipath Fading ◽  
Wireless Channel ◽  
Accurate Estimation ◽  
Security Level ◽  
5G Mobile Communication ◽  
Mimo Technology ◽  
Directional Modulation

Background: To study a large number of classified and sensitive information transmission security issues brought by 5G mobile communication system. Methods: In this paper, the principle of beamforming and its shortcomings are introduced by combining the large-scale MIMO technology and directional modulation technology. The directional modulation technology based on antenna subset selection and a hybrid array is introduced to realize the safe transmission target. The results show that large-scale MIMO technology has become a key technology of 5G mobile communication. Still the factors such as multipath fading in the actual wireless channel have not been fully considered, and the accurate estimation error of channel state information (CSI) will affect the ideal security level it can achieve. Results: The combined application of massive MIMO technology and directional modulation technology in the 5G system brings security to its communication. Conclusion : Directional modulation technology based on signal modulation has become an important research point of the 5G system because it does not need to consider the eavesdropper's computing power and can achieve the purpose of safe transmission by disturbing the signal constellation in an unexpected direction.

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