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 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 A CQI based Novel Shared Channel Downlink Scheduler for LTE Networks

2019 ◽  
Vol 8 (6) ◽  
pp. 4422-4426
Keyword(s):  
High Speed ◽  
Quality Of Experience ◽  
Multimedia Content ◽  
Video Content ◽  
Lte Networks ◽  
Downlink Scheduling ◽  
High Data ◽  
Shared Channel ◽  
New Generation

Long Terrn Evolution (LTE) can be called as the new generation of High Speed Cellular Communication. LTE networks serves as back bone for 4G networks delivering high data transmission speeds and support for Qualisty of Service (QoS). It also ensures the availability of high speed connection, HD Calling, more security and extended support for streaming of HD multimedia content which includes audio and video content. With this much development in the field of mobile communication, another term was coined QoE (Quality of experience) which refers to the overall degree of acceptability of the multimedia content as perceived by the end users. In this paper we introduce a CQI based algorithm to improve the overall QoE while it is being applied on downlink scheduling. Simulation runs proves that CQI has better results as compared to other algorithms based upon parameters such as throughput, SnR and fairness.

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.  

scholarly journals Optimization of Massive MIMO-OFDM Systems for PAPR Reduction

2020 ◽  
Vol 2 (2) ◽  
pp. 29-35
Author(s):  
Sivasankari J ◽  
Sridevi B ◽  
Mahima L
Keyword(s):  
Massive Mimo ◽  
Firefly Algorithm ◽  
Ofdm Systems ◽  
Ofdm System ◽  
High Data ◽  
Recent Approach ◽  
Current Scenario ◽  
Mimo Ofdm ◽  
Mimo Technology

Of late there has been an increase in use of wireless communication system. The recent approach used is Massive-MIMO technology. But in the current scenario where spectrum is limited, the demand for high data degrades the quality of services. Therefore, OFDM system was proposed. Though coupling OFDM system with MIMO can further improve the performance of next generation wireless systems, there are certain issues like antenna design, channel estimation, PAPR etc. which requires due consideration. Amongst them, PAPR is the major problem that contributes high in performance degradation. To overcome this issue, Modified Firefly algorithm is used which was inspired the behaviour of fireflies. With the firefly algorithm, PAPR is highly reduced leading to better performance.

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.

APPLICATION OF THE EARLY DAMAGE DIAGNOSTICS TECHNIQUE TO EXAMINATION OF THE AVIATION PANEL

2019 ◽  
Vol 85 (6) ◽  
pp. 53-63 ◽  
Author(s):  
I. E. Vasil’ev ◽  
Yu. G. Matvienko ◽  
A. V. Pankov ◽  
A. G. Kalinin
Keyword(s):  
Acoustic Emission ◽  
Damage Detection ◽  
High Speed ◽  
Early Stage ◽  
Video Data ◽  
High Speed Video ◽  
Damage Diagnostics ◽  
Subsurface Defect ◽  
Sensitive Coating ◽  
Early Damage

The results of using early damage diagnostics technique (developed in the Mechanical Engineering Research Institute of the Russian Academy of Sciences (IMASH RAN) for detecting the latent damage of an aviation panel made of composite material upon bench tensile tests are presented. We have assessed the capabilities of the developed technique and software regarding damage detection at the early stage of panel loading in conditions of elastic strain of the material using brittle strain-sensitive coating and simultaneous crack detection in the coating with a high-speed video camera “Video-print” and acoustic emission system “A-Line 32D.” When revealing a subsurface defect (a notch of the middle stringer) of the aviation panel, the general concept of damage detection at the early stage of loading in conditions of elastic behavior of the material was also tested in the course of the experiment, as well as the software specially developed for cluster analysis and classification of detected location pulses along with the equipment and software for simultaneous recording of video data flows and arrays of acoustic emission (AE) data. Synchronous recording of video images and AE pulses ensured precise control of the cracking process in the brittle strain-sensitive coating (tensocoating)at all stages of the experiment, whereas the use of structural-phenomenological approach kept track of the main trends in damage accumulation at different structural levels and identify the sources of their origin when classifying recorded AE data arrays. The combined use of oxide tensocoatings and high-speed video recording synchronized with the AE control system, provide the possibility of definite determination of the subsurface defect, reveal the maximum principal strains in the area of crack formation, quantify them and identify the main sources of AE signals upon monitoring the state of the aviation panel under loading P = 90 kN, which is about 12% of the critical load.

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