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5G Explained: About the Series

From the series: 5G Tutorial

This is the introduction to the series "5G Explained." It outlines the series and goes over the main goals and basic configuration of 5G New Radio.

Welcome. This is the introduction to our series “5G Explained.” In this video, we provide motivation for the series and go over the main goals and basic configuration of 5G New Radio.

5G NR introduces a new numerology for the OFDM resource grid and a new frame and slot structure, as well as new processing for downlink and uplink data, downlink and uplink control. An important new concept in 5G NR is CORESETs or Control Resource Sets, which are used to assign resources for control information on the downlink.

Beamforming is a critical part of 5G NR, and it requires demodulation reference symbols or DMRS to accompany each and every piece of information transmitted both on the downlink and the uplink. DMRS are much more flexible in 5G NR than they are in LTE.

A good example of newly beamformed channel is the broadcast channel, which is part of the synchronization signal block or SSB. The SSB plays the same role as the primary and secondary synchronization signals and physical broadcast channel in LTE, but its structure is quite different.

Cell Search and RACH procedures are similar to their equivalent in LTE, but there are significant differences, in particular linked to beamforming and the initial establishment of a connection.

Finally, channel estimation is more critical and more difficult than ever, as it also enables beamforming, which is the concentration of energy in the direction of the receiver. At mmW, propagation loss is higher and antenna arrays are needed to establish a high enough SNR for a link to be possible. To help with channel sounding, specific signals were designed. They include the channel state information reference symbols or CSI-RS and the sounding reference signals or SRS.

The goal of this “5G Explained” series is to explain the main features of 5G NR. To that end, we use screenshots or short interactive examples taken from or built with MathWorks 5G Toolbox. You can find more information about 5G Toolbox at www.mathworks.com/products/5g

5G Toolbox offers MATLAB models for 5G NR, including waveform generation, end-to-end link level simulation, and measurements.

5G Toolbox includes full source code, which means that you can view and modify any part of the toolbox. In addition, the source code supports MATLAB Coder, which lets you automatically generate standalone C code from the MATLAB code.

This concludes this introduction to the “5G Explained” video series.

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Learn about use cases, requirements, some of the main differences between 5G New Radio (NR) and LTE, and deployment scenarios for 5G NR. You’ll also learn about frequency ranges for 5G NR, FR1 and FR2.
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