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Electronics
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Problems and Challenges of Physical Layer in 5G Systems
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Problems and Challenges of Physical Layer in 5G Systems

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 6149

Special Issue Editor

Prof. Dr. Krzysztof Wesolowski

E-Mail Website
Guest Editor
Faculty of Computing and Telecommunications, Poznan University of Technology, 60-965 Poznań, Poland
Interests: digital wireline and wireless communication systems; information and coding theory and DSP applications in digital communications

Special Issue Information

Dear Colleagues

We strongly encourage you to submit papers to the Special Issue of Electronics (MDPI) journal devoted to the problems and challenges of the physical layer in 5G systems. Although a lot has been already done in the development of 5G systems, scientists and engineers still face many problems associated with the main scenarios of future 5G communications. 3GPP Release 15 has already standardized a transmission system in the eMBB (enhanced Mobile Broadband) scenario and there are intensive works on the standardization of communication systems in two other scenarios, namely, URLLC (ultra-reliable low-latency communications) and mMTC (massive machine-type communications). There is space for research results and their rapid publication related to all three main 5G types of communications. Our issue opens such possibilities. Therefore, we expect papers devoted (but not limited) to the following topics:

  • Implementation issues of eMBB transceivers, including efficient realization of applied channel (LDPC and polar) codes, energy efficiency of transceiver design, powerful synchronization methods for large FFT size OFDM and DFT-spread-OFDM signals
  • Investigation of ultra-reliable transmission methods for V2X and remote robot control communication systems, including effective channel coding, reliable access to radio resources and transceiver design
  • Consideration of specific problems of transceiver implementation in the mmWave range of communications
  • Massive MIMO structures and algorithms
  • Energy-efficient transmission, synchronization and multiple access methods for mMTC (e.g., Internet of Things)
  • Modulation and coding for mMTC
  • Application of cognitive radio in 5G.

Regular papers should describe novel, unpublished results of practical significance. Selected overview and tutorial papers can be considered as well. All submitted papers will undergo a careful selection process based on peer-review. 

Prof. Dr. Krzysztof Wesolowski
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • 5G transceiver design
  • modulation
  • coding
  • synchronization
  • multiple access
  • massive MIMO
  • millimeter-wave communications

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Published Papers (2 papers)

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Research

20 pages, 1517 KiB  
Article
C-V2X Centralized Resource Allocation with Spectrum Re-Partitioning in Highway Scenario
by Saif Sabeeh, Krzysztof Wesołowski and Paweł Sroka
Electronics 2022, 11(2), 279; https://doi.org/10.3390/electronics11020279 - 16 Jan 2022
Cited by 13 | Viewed by 2731
Abstract
Cellular Vehicle-to-Everything communication is an important scenario of 5G technologies. Modes 3 and 4 of the wireless systems introduced in Release 14 of 3GPP standards are intended to support vehicular communication with and without cellular infrastructure. In the case of Mode 3, dynamic [...] Read more.
Cellular Vehicle-to-Everything communication is an important scenario of 5G technologies. Modes 3 and 4 of the wireless systems introduced in Release 14 of 3GPP standards are intended to support vehicular communication with and without cellular infrastructure. In the case of Mode 3, dynamic resource selection and semi-persistent resource scheduling algorithms result in a signalling cost problem between vehicles and infrastructure, therefore, we propose a means to decrease it. This paper employs Re-selection Counter in centralized resource allocation as a decremental counter of new resource requests. Furthermore, two new spectrum re-partitioning and frequency reuse techniques in Roadside Units (RSUs) are considered to avoid resource collisions and diminish high interference impact via increasing the frequency reuse distance. The two techniques, full and partial frequency reuse, partition the bandwidth into two sub-bands. Two adjacent RSUs apply these sub-bands with the Full Frequency Reuse (FFR) technique. In the Partial Frequency Reuse (PFR) technique, the sub-bands are further re-partitioned among vehicles located in the central and edge parts of the RSU coverage. The sub-bands assignment in the nearest RSUs using the same sub-bands is inverted concerning the current RSU to increase the frequency reuse distance. The PFR technique shows promising results compared with the FFR technique. Both techniques are compared with the single band system for different vehicle densities. Full article
(This article belongs to the Special Issue Problems and Challenges of Physical Layer in 5G Systems)
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17 pages, 3115 KiB  
Article
Application of an Interference Cancellation Detector in a Two-Way Relaying System with Physical Network Coding
by Hind Salim Ghazi and Krzysztof Wesołowski
Electronics 2021, 10(11), 1294; https://doi.org/10.3390/electronics10111294 - 28 May 2021
Cited by 2 | Viewed by 2232
Abstract
In this paper, we investigate the performance of a detector recently proposed by us that is applied in the relay station receiving signals from two terminals concurrently exchanging data in the two-way relaying system. This is one of the potential configurations to save [...] Read more.
In this paper, we investigate the performance of a detector recently proposed by us that is applied in the relay station receiving signals from two terminals concurrently exchanging data in the two-way relaying system. This is one of the potential configurations to save resources in fifth-generation systems, similar to non-orthogonal multiple access, which is also considered for such systems. Two-way relaying can be implemented using physical network coding. This technique originates from the network coding idea, in which network nodes can perform some mathematical operations. The idea of the investigated detector lies in the application of tentative decisions about weaker signals in the detection of stronger ones and then, after improved detection of stronger user signals, achieving more reliable decisions about the weaker ones. We compare the performance of the proposed detector with the performance of a detector in which the relay makes decisions on the data symbols received from the stations participating in two-way relaying on a symbol-by-symbol basis. Simulation results performed for two-way relaying with physical network coding reported in this paper confirm the superiority of the proposed detector when compared with the standard physical network coding solution applied in the relay node. Full article
(This article belongs to the Special Issue Problems and Challenges of Physical Layer in 5G Systems)
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