Related Experiment Video
Updated: Oct 30, 2025
10:00
Calibration of Vector Network Analyzer for Measurements in Radio Frequency Propagation Channels
Published on: June 2, 2020
21.8K
Dynamic Spectrum Sharing for Future LTE-NR Networks
Gordana Barb1, Florin Alexa1, Marius Otesteanu1
1Department of Communications, Politehnica University Timișoara, 300006 Timișoara, Romania.
Sensors (Basel, Switzerland)
|July 2, 2021
Summary
Dynamic spectrum sharing allows mobile operators to use existing LTE bands for 5G New Radio services, improving spectrum efficiency. This approach offers 5G deployment with a manageable throughput reduction, reducing costs.
Area of Science:
- Telecommunications Engineering
- Wireless Communication Systems
Background:
- 5G deployment necessitates efficient spectrum utilization due to its limited and costly nature.
- Dynamic spectrum sharing (DSS) enables operators to share spectrum between different technologies, enhancing efficiency.
Purpose of the Study:
- To investigate the feasibility and performance of dynamic spectrum sharing between LTE and 5G New Radio.
- To evaluate the impact of DSS on system throughput and spectrum efficiency.
Main Methods:
- A solution for interleaved dynamic spectrum sharing between LTE and 5G New Radio was presented.
- Performance evaluation focused on system throughput under DSS conditions.
Main Results:
- Dynamic spectrum sharing resulted in a maximum throughput loss of 25%.
- The throughput decrease is considered acceptable given the benefits.
Conclusions:
- Dynamic spectrum sharing enables 5G services using existing LTE bandwidth, avoiding the need for additional spectrum.
- This method significantly reduces costs for mobile network operators and increases overall spectrum efficiency.
Related Concept Videos
01:08IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
1.4K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.4K
01:04¹³C NMR: ¹H–¹³C Decoupling
1.3K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.3K
01:12Two-Dimensional (2D) NMR: Overview
1.0K
The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
1.0K
01:24The Electromagnetic Spectrum
31.9K
Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
31.9K
02:37The Electromagnetic Spectrum
61.4K
The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
61.4K
01:24IR Frequency Region: X–H Stretching
1.2K
In IR spectroscopy, signals produced by the X−H bonds (such as C−H, O−H, or N−H) can be observed in the frequency range of 2700–4000 cm–1. The C−H stretching vibration forms sharp bands in the region 2850–3000 cm–1. The presence of the O−H stretching vibration leads to the forming of an absorption band in the frequency range 3650–3200 cm−1. At the same time, N−H stretching can be confirmed by absorption bands in...
1.2K