Advanced Simulation Methods of Antennas and Radio Propagation for 5G and Beyond Communications Systems.

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Date: July 31, 2020
Publisher: Hindawi Limited
Document Type: Article
Length: 2,471 words
Lexile Measure: 1580L

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Nowadays, high data rates can be provided by optical fibres as defined in the IEEE 802.3ba-2010 standard. The question is how to bring such a data rate over a wireless link between an indoor base station and a mobile device where 1000-fold growth data transfer is expected till 2020 [1] and 5000-fold growth by the year 2030 [2]. The IEEE 802.11.n standard for wireless local area networks (WLANs) can provide data rates up to 600 MBit/s, whereas the IEEE 802.11ac D standard defines data rates up to 7 GBit/s. For future wireless communications systems (5G and beyond), more than 100 GBit/ s data rates are desired, giving huge challenges for the systems' design. These kinds of data speeds have been so far demonstrated only in laboratory conditions [3].

Wireless networks beyond 5G (fifth-generation) and 6G (sixth-generation) are expected to provide a performance targeting up to Tbps data rates. It is supporting a large scale of novel usage scenarios and applications with high reliability, almost zero response time, and higher frequencies. Virtual presence, 3D printing, cyber physical systems, intelligent transport, and Industry 4.0 are only a few examples of several possible use cases in order to enhance scalability, flexibility, and efficient resource allocation. These approaches do not tackle the fundamental performance limitations such as the available bandwidth, transmission and processing delay, cost, and energy consumption. To break these barriers in networks beyond 5G, resources, technologies, and research towards new technological concepts, components, architectures, and systems concepts are needed. Hence, innovative joint-investigation, assessment, and design of theoretical models, aligned and supported by experimental parameter evaluation/estimation and validation, are required.

In the future, the access to high-speed Internet is a crucial advantage in the global competition for industry sites and highly qualified human resources. Terahertz (THz) links, as a wireless backhaul extension of the optical fiber [4], are important to guarantee high-speed Internet access everywhere. Moreover, the increasing number of mobile and fixed users in the private, industrial, and service sectors will require hundreds of Gbps communications between cell towers (backhaul) or between cell towers and remote radio heads (fronthaul).

As the application scenarios and requirements are more diverse in the 5G and beyond communications than before, not only the sub-6 GHz spectrum but also higher frequency bands including millimetre wave (mm-Wave) and THz bands are key enablers to satisfy the increasing data rate demands. Therefore, tremendous funding has been and will be investigating in this area. Researchers are active in sharing their knowledge to push the related technologies forward.

Accurate channel characterization and modelling are fundamental to evaluate the designed technologies and system performance. The evaluation of multiple-input multiple-output (MIMO) technology, various mobilities, propagation environments, and frequency bands are making this work more and more challenging [5]. The researchers are making efforts on both deterministic and stochastic channel models that support spatial consistency, dual mobility, and various propagation mechanisms. Ray tracing(RT-) based deterministic modelling approach has demonstrated the advantage in predicting time-varying channel and MIMO channel for various frequency bands. The computational...

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Gale Document Number: GALE|A637027671