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Electronics
Special Issues
Waveform Design for 5G and beyond Systems
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Waveform Design for 5G and beyond 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 June 2021) | Viewed by 17633

Printed Edition Available!
A printed edition of this Special Issue is available here.

Special Issue Editor

Prof. Dr. Kwonhue Choi

E-Mail Website
Guest Editor
Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 712-749, Korea
Interests: waveform design; modulation and coding; multiple access techniques; diversity techniques; in-band full duplex radio; multicarrier transmission algorithms

Special Issue Information

Dear Colleagues,

5G traffic has very diverse requirements with respect to data rate, delay, and reliability. The concept of using multiple OFDM numerologies adopted in 5G NR standard will likely meet these multiple requirements to some extent. However, the traffic is radically accruing more different characteristics and requirements when compared with the initial stage of 5G, which focused mainly on high-speed multimedia data application. For instance, applications such as vehicular communications and robotics control require highly reliable and ultra-low delay. In addition, various emerging M2M applications have sparse traffic with a small amount of data to be delivered. The state-of-the-art OFDM technique has some limitations when addressing the aforementioned requirements at the same time. Meanwhile, numerous waveform alternatives, such as FBMC, GFDM, and UFMC, have been explored. They also have their own pros and cons due to their intrinsic waveform properties. Hence, it is very timely to come up with modification/variations/combinations to the aforementioned techniques or a new waveform design for 5G systems and beyond. The aim of this Special Issue is to provide the latest research and advances in the field of waveform design for 5G systems and beyond.

All papers will be peer-reviewed as soon as submitted. The editorial decision will be made about 35 days after submission, on average. The accepted papers will be published continuously in this Special Issue as soon as accepted, irrespective of the submission deadline, and will be listed together on the Special Issue website.

Prof. Dr. Kwonhue Choi
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

  • Waveform design for vehicular, device-to-device (D2D), and machine-to-machine (M2M) communications
  • Machine learning-based waveform design
  • Low latency and low complexity waveforms
  • Energy and spectral efficient waveforms
  • Synchronization error-resilient waveform design
  • Hardware impairments-resilient waveform design
  • Hardware implementations of beyond 5G waveforms
  • Field testing of the waveforms for 5G and beyond in real wireless channels
  • Waveform design for massive multiple access
  • Waveform design for multiple-input multiple-output (MIMO) systems
  • Waveform design for cognitive radios
  • Non-orthogonal waveform design
  • Joint coding and modulation for 5G and beyond
  • Waveform design for physical layer security
  • Index modulation-based waveforms
  • Millimeter-wave waveform design

Published Papers (6 papers)

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Editorial

Jump to: Research, Review

3 pages, 153 KiB  
Editorial
Waveform Design for 5G and beyond Systems
by Kwonhue Choi
Electronics 2021, 10(17), 2124; https://doi.org/10.3390/electronics10172124 - 01 Sep 2021
Cited by 1 | Viewed by 1345
Abstract
Currently, 5G communication systems are being commercially deployed in many countries [...] Full article
(This article belongs to the Special Issue Waveform Design for 5G and beyond Systems)

Research

Jump to: Editorial, Review

8 pages, 601 KiB  
Article
Improved Pair-Wise Detections of Differential Quasi-Orthogonal Space-Time Modulation with Four Transmit Antennas
by Hojun Kim, Yulong Shang, Seunghyeon Kim and Taejin Jung
Electronics 2021, 10(14), 1675; https://doi.org/10.3390/electronics10141675 - 13 Jul 2021
Cited by 1 | Viewed by 1314
Abstract
In this paper, we propose new complex and real pair-wise detection for conventional differential space–time modulations based on quasi-orthogonal design with four transmit antennas for general QAM. Since the new complex and real pair-wise detections allow the independent joint ML detection of two [...] Read more.
In this paper, we propose new complex and real pair-wise detection for conventional differential space–time modulations based on quasi-orthogonal design with four transmit antennas for general QAM. Since the new complex and real pair-wise detections allow the independent joint ML detection of two complex and real symbol pairs, respectively, the decoding complexity is the same as or lower than conventional differential detections. Simulation results show that the proposed detections exhibit almost identical performance with an optimum maximum-likelihood receiver, as well as improved performance compared with conventional pair-wise detections, especially for higher modulation order. Full article
(This article belongs to the Special Issue Waveform Design for 5G and beyond Systems)
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15 pages, 4351 KiB  
Article
Field Trials of SC-FDMA, FBMC and LP-FBMC in Indoor Sub-3.5 GHz Bands
by Dongjun Na, Sangmin Jang, Won-Gi Seo and Kwonhue Choi
Electronics 2021, 10(5), 573; https://doi.org/10.3390/electronics10050573 - 01 Mar 2021
Cited by 3 | Viewed by 2018
Abstract
LP-FBMC (low peak-to-average power ratio filter bank multicarrier) was recently proposed to ameliorate the high peak-to-average power ratio (PAPR) issue of filter bank multicarrier (FBMC). The previous simulation study showed that LP-FBMC achieves a similar PAPR as that of single carrier frequency division [...] Read more.
LP-FBMC (low peak-to-average power ratio filter bank multicarrier) was recently proposed to ameliorate the high peak-to-average power ratio (PAPR) issue of filter bank multicarrier (FBMC). The previous simulation study showed that LP-FBMC achieves a similar PAPR as that of single carrier frequency division multiple access (SC-FDMA) while being very robust to inter-user timing/frequency offsets. However, the simulation results that were obtained assuming the stereotyped channel model and the simple nonlinearity model of analog circuits substantially differ from the performance results in a real channel with a real transceiver. To address this, the main purpose of this work is to compare the performances of three waveforms, i.e., SC-FDMA, FBMC, and LP-FBMC, in a real uplink indoor channel. We investigate how the bit error rate (BER) performance gaps of three waveforms in the indoor channels change by the system parameters, such as the carrier frequency within sub-3.5 GHz band and the number of sub-carriers or the sub-carrier spacing, which was not found in the previous simulation study. Our investigation confirms that LP-FBMC is a suitable waveform for real indoor applications. Full article
(This article belongs to the Special Issue Waveform Design for 5G and beyond Systems)
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11 pages, 502 KiB  
Article
Waveform Design for Space–Time Coded MIMO Systems with High Secrecy Protection
by Pingping Shang, Hyein Lee and Sooyoung Kim
Electronics 2020, 9(12), 2003; https://doi.org/10.3390/electronics9122003 - 25 Nov 2020
Cited by 4 | Viewed by 1771
Abstract
In this paper, we present a new secrecy-enhancing scheme for multi-input-multi-output (MIMO) systems using a space–time coding scheme. We adopt a quasi-orthogonal space–time block coding (QO-STBC) scheme that was originally designed to improve the performance of the MIMO system, and propose an efficient [...] Read more.
In this paper, we present a new secrecy-enhancing scheme for multi-input-multi-output (MIMO) systems using a space–time coding scheme. We adopt a quasi-orthogonal space–time block coding (QO-STBC) scheme that was originally designed to improve the performance of the MIMO system, and propose an efficient waveform design that can enhance the secrecy, as well as improve the error rate performance. Channel- and signal-dependent artificial interference (AI) is added to the proposed waveform, so that only a legitimate receiver can successfully retrieve information. We investigate the secrecy capacity of the proposed scheme, and demonstrate that the proposed scheme provides highly enhanced secrecy performance, compared to the conventional schemes. The performance simulation results reveal that the transmitted information can be properly extracted only at the legitimate receiver. Full article
(This article belongs to the Special Issue Waveform Design for 5G and beyond Systems)
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15 pages, 513 KiB  
Article
Performance Analysis of LDS Multi Access Technique and New 5G Waveforms for V2X Communication
by Imane Khelouani, Fouzia Elbahhar, Raja Elassali and Noureddine Idboufker
Electronics 2020, 9(7), 1094; https://doi.org/10.3390/electronics9071094 - 04 Jul 2020
Cited by 6 | Viewed by 2508
Abstract
Low Density Signature (LDS) is an emerging non-orthogonal multiple access (NOMA) technique that has never been evaluated under a vehicular channel in order to simulate the environment of a vehicle to everything (V2X) communication. Moreover, the LDS structure has been combined with only [...] Read more.
Low Density Signature (LDS) is an emerging non-orthogonal multiple access (NOMA) technique that has never been evaluated under a vehicular channel in order to simulate the environment of a vehicle to everything (V2X) communication. Moreover, the LDS structure has been combined with only Orthogonal Frequency Division Multiplexing (OFDM) and Filter-Bank Multi-Carrier (FBMC) waveforms to improve its performances. In this paper, we propose new schemes where the LDS structure is combined with Universal Filtered Multi-Carrier (UFMC) and Filtered-OFDM waveforms and the Bit Error Rate (BER) is analysed over a frequency selective channel as a reference and over a vehicular channel to analyse the effect of the Doppler shift on the overall performance. Full article
(This article belongs to the Special Issue Waveform Design for 5G and beyond Systems)
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Review

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34 pages, 1320 KiB  
Review
An Overview of FIR Filter Design in Future Multicarrier Communication Systems
by Lei Jiang, Haijian Zhang, Shuai Cheng, Hengwei Lv and Pandong Li
Electronics 2020, 9(4), 599; https://doi.org/10.3390/electronics9040599 - 31 Mar 2020
Cited by 17 | Viewed by 7542
Abstract
Future wireless communication systems are facing with many challenges due to their complexity and diversification. Orthogonal frequency division multiplexing (OFDM) in 4G cannot meet the requirements in future scenarios, thus alternative multicarrier modulation (MCM) candidates for future physical layer have been extensively studied [...] Read more.
Future wireless communication systems are facing with many challenges due to their complexity and diversification. Orthogonal frequency division multiplexing (OFDM) in 4G cannot meet the requirements in future scenarios, thus alternative multicarrier modulation (MCM) candidates for future physical layer have been extensively studied in the academic field, for example, filter bank multicarrier (FBMC), generalized frequency division multiplexing (GFDM), universal filtered multicarrier (UFMC), filtered OFDM (F-OFDM), and so forth, wherein the prototype filter design is an essential component based on which the synthesis and analysis filters are derived. This paper presents a comprehensive survey on the recent advances of finite impulse response (FIR) filter design methods in MCM based communication systems. Firstly, the fundamental aspects are examined, including the introduction of existing waveform candidates and the principle of FIR filter design. Then the methods of FIR filter design are summarized in details and we focus on the following three categories—frequency sampling methods, windowing based methods and optimization based methods. Finally, the performances of various FIR design methods are evaluated and quantified by power spectral density (PSD) and bit error rate (BER), and different MCM schemes as well as their potential prototype filters are discussed. Full article
(This article belongs to the Special Issue Waveform Design for 5G and beyond Systems)
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