Abstract
The growing demand for broadband Internet services is forcing scientists around the world to seek and develop new telecommunication technologies. With the transition from the fourth generation to the fifth generation wireless communication systems, one of these technologies is beamforming. The need for this technology was caused by the use of millimeter waves in data transmission. This frequency range is characterized by heavy path loss. The beamforming technology could compensate for this significant drawback. This paper discusses basic beamforming schemes and proposes a model implemented on the basis of QuaDRiGa. The model implements a MIMO channel using symmetrical antenna arrays. In addition, the methods for calculating the antenna weight coefficients based on the channel matrix are compared. The first well-known method is based on the addition of cluster responses to calculate the coefficients. The proposed one uses the singular value decomposition of the channel matrix into clusters to take into account the most correlated information between all clusters when calculating the antenna coefficients. According to the research results, the proposed method for calculating the antenna coefficients allows an increase in the SNR/SINR level by 8–10 dB on the receiving side in the case of analog beamforming with a known channel matrix.
Highlights
Symmetry is an international peer-reviewed journal, one of the areas of which is devoted to the study of information technology and electronics
The results presented below were obtained when implementing the MIMO 8 × 8 model using symmetrical antenna arrays in which antenna elements are located at the vertices of regular polygons [14]
Beamforming technology is an important part of 5G systems since they use higher frequency signals
Summary
Symmetry is an international peer-reviewed journal, one of the areas of which is devoted to the study of information technology and electronics This direction addresses the problems of telecommunications and next-generation communication systems. Behind a simple change in the name lie big changes in the wireless telecommunications industry and the years of scientific and engineering work These changes affected all the qualitative and quantitative features of the new systems. It is possible to connect more devices to the Internet This takes a step towards the ideas of “Smart Home”, “Smart Manufacturing” and others. There is one problem with this move This is a significant signal attenuation when the distance and frequency increase. Without compensating for this disadvantage, most of 5G benefits would be unrealizable.
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