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Publications (10 of 81) Show all publications
Chu, T. M. & Zepernick, H.-J. (2024). Hybrid Orthogonal-Nonorthogonal Multiple Access for CR-Assisted Cooperative UAV Systems. In: Jeong S.H., Loc H.D., Fdida S., Le-Ngoc T. (Ed.), ICCE 2024 - 2024 IEEE 10th International Conference on Communications and Electronics: . Paper presented at 10th IEEE International Conference on Communications and Electronics, ICCE 2024, Da Nang City, July 31- Aug 02 2024 (pp. 54-59). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Hybrid Orthogonal-Nonorthogonal Multiple Access for CR-Assisted Cooperative UAV Systems
2024 (English)In: ICCE 2024 - 2024 IEEE 10th International Conference on Communications and Electronics / [ed] Jeong S.H., Loc H.D., Fdida S., Le-Ngoc T., Institute of Electrical and Electronics Engineers (IEEE), 2024, p. 54-59Conference paper, Published paper (Refereed)
Abstract [en]

Non-terrestrial networks based on unmanned aerial vehicles (UAVs) are considered for integration with 6G mobile networks to provide ubiquitous communication through heterogeneous networks. UAVs offer benefits such as flexible deployment, mobility control, and strong line-of-sight links. In this paper, orthogonal multiple access (OMA) and nonorthogonal multiple access (NOMA) are combined to form a hybrid OMA-NOMA cognitive radio (CR) assisted cooperative UAV system. The selection of either the OMA or NOMA mode is carried out such that the best link quality is offered to the user equipments (UEs) compared to the individual modes. In this system, the base station uses the NOMA mode for the transmission to the UAVs which act as decode-and-forward relays each serving a cluster of UEs. The CR paradigm is used for the NOMA mode of the hybrid system to reduce the interference caused by the UAVs to adjacent clusters of UEs. Analytical expressions of the outage probability and sum rate of the OMA, NOMA, and hybrid OMA-NOMA systems are derived. Numerical results are provided to reveal the performance advantages of the proposed hybrid OMA-NOMA CR-assisted cooperative UAV system over Nakagami-m fading. Further, design options and tradeoffs between the OMA, NOMA, and hybrid OMA-NOMA systems are illustrated. © 2024 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2024
Keywords
Cognitive Radio, Cooperative Communications, NOMA, OMA, Outage Probability, Sum Rate, UAV, Aircraft communication, Cooperative communication, Fading (radio), Health risks, Mobile telecommunication systems, Radio communication, Risk assessment, Aerial vehicle, Multiple access, Non-orthogonal, Nonorthogonal multiple access, Orthogonal multiple access, Sum-rate, Unmanned aerial vehicle, Unmanned aerial vehicle systems, Unmanned aerial vehicles (UAV)
National Category
Telecommunications
Identifiers
urn:nbn:se:bth-26913 (URN)10.1109/ICCE62051.2024.10634673 (DOI)2-s2.0-85203001679 (Scopus ID)9798350379785 (ISBN)
Conference
10th IEEE International Conference on Communications and Electronics, ICCE 2024, Da Nang City, July 31- Aug 02 2024
Funder
Vinnova, 2023-01949
Available from: 2024-09-16 Created: 2024-09-16 Last updated: 2024-09-20Bibliographically approved
Elwardy, M., Zepernick, H.-J., Chu, T. M. & Hu, Y. (2024). On the Consistency of 360° Video Quality Assessment in Repeated Subjective Tests: A Pilot Study. EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 11(1), 1-22
Open this publication in new window or tab >>On the Consistency of 360° Video Quality Assessment in Repeated Subjective Tests: A Pilot Study
2024 (English)In: EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, E-ISSN 2410-0218, Vol. 11, no 1, p. 1-22Article in journal (Refereed) Published
Abstract [en]

Immersive media such as virtual reality, augmented reality, and 360° video have seen tremendous technological developments in recent years. Furthermore, the advances in head-mounted displays (HMDs) offer the users increased immersive experiences compared to conventional displays. To develop novel immersive media systems and services that satisfy the expectations of the users, it is essential to conduct subjective tests revealing users’ perceived quality of immersive media. However, due to the new viewing dimensions provided by HMDs and the potential of interacting with the content, a wide range of subjective tests are required to understand the many aspects of user behavior in and quality perception of immersive media. The ground truth obtained by such subjective tests enable the development of optimized immersive media systems that fulfill the expectations of the users. This article focuses on the consistency of 360° video quality assessment to reveal whether users’ subjective quality assessment of such immersive visual stimuli changes fundamentally over time or is kept consistent for each user. A pilot study was conducted under pandemic conditions with participants given the task of rating the quality of 360° video stimuli on an HMD in standing and seated viewing. The choice of conducting a pilot study is motivated by the fact that immersive media impose high cognitive load on the participants and the need to keep the number of participants under pandemic conditions as low as possible. To gain insight into the consistency of the participants’ 360° video assessment over time, three sessions were held for each participant and each viewing condition with long and short breaks between sessions. In particular, the opinion scores and head movements were recorded for each participant and each session in standing and seated viewing. The statistical analysis of this data leads to the conjecture that the quality rating stays consistent throughout these sessions with each participant having their own quality assessment signature. The head movements, indicating the participants’ scene exploration during the quality assessment task, also remain consistent for each participant according their individual narrower or wider scene exploration signature. These findings are more pronounced for standing viewing than for seated viewing. This work supports the role of pilot studies being a useful approach of conducting pre-tests on immersive media quality under opportunity-limited conditions and for the planning of subsequent full subjective tests with a large panel of participants. The annotated RQA360 dataset containing the data recorded in the repeated subjective tests is made publicly available to the research community. © 2024. M. Elwardy et al., licensed to EAI. This is an open access article distributed under the terms of the CC BY-NC-SA 4.0, which permits copying, redistributing, remixing, transformation, and building upon the material in any medium so long as the original work is properly cited. doi:10.4108/eetinis.v11i1.4323. All Rights Reserved.

Place, publisher, year, edition, pages
European Alliance for Innovation, 2024
Keywords
360° video, annotated dataset, opportunity-limited conditions, pilot study, quality assessment, quality of experience, seated viewing, standing viewing, subjective tests, Behavioral research, Helmet mounted displays, Quality control, Quality of service, Subjective testing, Virtual reality, 360° video, Annotated datasets, Condition, Opportunity-limited condition, Pilot studies, Subjective test, Augmented reality
National Category
Telecommunications
Identifiers
urn:nbn:se:bth-26064 (URN)10.4108/eetinis.v11i1.4323 (DOI)2-s2.0-85187234575 (Scopus ID)
Funder
Knowledge Foundation, 20170056Knowledge Foundation, 20220068
Available from: 2024-03-27 Created: 2024-03-27 Last updated: 2024-03-27Bibliographically approved
Chu, T. M. & Zepernick, H.-J. (2024). Performance Analysis of a Cognitive Radio Assisted Cooperative NOMA UAV System. In: Proceedings - 2024 IEEE 25th International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024: . Paper presented at 25th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024, Perth, June 4-7 2024 (pp. 51-56). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Performance Analysis of a Cognitive Radio Assisted Cooperative NOMA UAV System
2024 (English)In: Proceedings - 2024 IEEE 25th International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024, Institute of Electrical and Electronics Engineers (IEEE), 2024, p. 51-56Conference paper, Published paper (Refereed)
Abstract [en]

Future 6G mobile networks are expected to provide ubiquitous communication to a wide range of mobile devices through heterogeneous networks including non-terrestrial networks (NTNs). As an important complement to terrestrial networks, unmanned aerial vehicles (UAVs) based NTNs offer benefits such as flexible deployment, mobility control, and strong line-of-sight links. In this paper, a cognitive radio (CR) assisted cooperative non-orthogonal multiple access (NOMA) UAV system is proposed and its performance is analysed. In this system, the base station uses power-domain NOMA regarding the UAVs. The UAVs act as decode-and-forward relays serving clusters of user equipments (UEs). The CR concept is applied to reduce the interference caused by the UAVs to adjacent clusters of UEs. Analytical expressions of the outage probability and sum rate of this system are derived for the case of Nakagami-m fading. Numerical results are provided to reveal the impact of system parameters on the outage probability and sum rate. Further, design options and trade-offs between orthogonal multiple access and CR assisted cooperative NOMA UAV systems are illustrated. © 2024 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2024
Keywords
cognitive radio, cooperative communications, non-orthogonal multiple access, outage probability, sum rate, Unmanned aerial vehicles, 5G mobile communication systems, Antennas, Cooperative communication, Economic and social effects, Fading (radio), Fading channels, Heterogeneous networks, Radio links, Unmanned aerial vehicles (UAV), Aerial vehicle, Multiple access, Non-orthogonal, Sum-rate, Terrestrial networks, Unmanned aerial vehicle, Unmanned aerial vehicle systems, User equipments
National Category
Telecommunications
Identifiers
urn:nbn:se:bth-26781 (URN)10.1109/WoWMoM60985.2024.00020 (DOI)001289070500009 ()2-s2.0-85198902311 (Scopus ID)9798350394665 (ISBN)
Conference
25th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024, Perth, June 4-7 2024
Projects
Directed COM & EW by Digital multichannel AESA
Funder
Vinnova, 2023-01949
Available from: 2024-08-08 Created: 2024-08-08 Last updated: 2024-10-04Bibliographically approved
Chu, T. M. & Zepernick, H.-J. (2024). Queueing Theoretical Performance Assessment of Mobile Virtual Reality Video Streaming. In: Proceedings - 2024 IEEE 25th International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024: . Paper presented at 25th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024, Perth, June 4-7, 2024 (pp. 363-369). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Queueing Theoretical Performance Assessment of Mobile Virtual Reality Video Streaming
2024 (English)In: Proceedings - 2024 IEEE 25th International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024, Institute of Electrical and Electronics Engineers (IEEE), 2024, p. 363-369Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, a mobile virtual reality (VR) video streaming system is considered and assessed. The system comprises of a VR server, a VR center offering mobile edge computing along with a buffer, and a mobile head-mounted display (HMD). Markov-modulated processes are used to model the arrival and departure traffic at the VR center and the time-varying link quality of the wireless channel to the mobile HMD. As the Markovian arrival process at the VR center is independent of the link quality variations of the wireless channel, the VR center controls the delivery of VR video packets to the mobile HMD subject to the link quality of the wireless channel. The Markov models are used to derive expressions of queueing theoretical performance measures, i.e., throughput, queueing delay, and packet loss probability. Numerical results are provided to investigate performance trade-offs for real data traces. © 2024 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2024
Keywords
Economic and social effects, Helmet mounted displays, Markov processes, Mobile edge computing, Packet networks, Queueing theory, Video streaming, Head-mounted-displays, Link quality, Markov modulated process, Markovian arrival process, Performance assessment, Streaming systems, Theoretical performance, Time varying, Video-streaming, Wireless channel, Virtual reality
National Category
Telecommunications
Identifiers
urn:nbn:se:bth-26780 (URN)10.1109/WoWMoM60985.2024.00064 (DOI)001289070500053 ()2-s2.0-85198907301 (Scopus ID)9798350394665 (ISBN)
Conference
25th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2024, Perth, June 4-7, 2024
Funder
Knowledge Foundation, 20170056Knowledge Foundation, 20220068
Available from: 2024-08-08 Created: 2024-08-08 Last updated: 2024-10-04Bibliographically approved
Elwardy, M., Zepernick, H.-J., Hu, Y. & Chu, T. M. (2023). ACR360: A Dataset on Subjective 360° Video Quality Assessment Using ACR Methods. In: Wysocki B.J., Wysocki T.A. (Ed.), 2023 16th International Conference on Signal Processing and Communication System, ICSPCS 2023 - Proceedings: . Paper presented at 16th International Conference on Signal Processing and Communication System, ICSPCS 2023, Bydgoszcz, 6 Sept - 8 Sept 2023. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>ACR360: A Dataset on Subjective 360° Video Quality Assessment Using ACR Methods
2023 (English)In: 2023 16th International Conference on Signal Processing and Communication System, ICSPCS 2023 - Proceedings / [ed] Wysocki B.J., Wysocki T.A., Institute of Electrical and Electronics Engineers (IEEE), 2023Conference paper, Published paper (Refereed)
Abstract [en]

The recent advances in immersive technologies have been essential in the development of a wide range of novel standalone and networked immersive media applications. The concepts of virtual reality, augmented reality, and mixed reality relate to different compositions of real and computer-generated virtual objects. In this context, 360° video streaming has become increasingly popular offering improved immersive experiences when viewed on a head-mounted display (HMD). An important component in the development of novel immersive media systems are subjective tests in which participants assess the quality of experience of representative test stimuli. In this paper, the annotated ACR360 dataset is presented which is publicly available on GitHub. The ACR360 dataset contains a wide range of psychophysical and psychophysiological data that was collected in Subjective tests on 360° video quality. The test stimuli were shown on an HMD and rated according to the absolute category rating (ACR) and modified ACR (MACR) methods. To support an easy exploration and utilization of the ACR360 dataset by the research community, its structure on GitHub is described and a comprehensive illustration of analysis options are provided for each data category. The ACR360 dataset may be used for conducting meta-analysis in combination with other datasets to improve precision and to pursue research questions that cannot be answered by an individual study. © 2023 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2023
Keywords
360° video, absolute category rating, annotated dataset, Immersive media, quality assessment, Subjective test, Helmet mounted displays, Image quality, Mixed reality, Quality of service, Statistical tests, Subjective testing, Video streaming, Absolute category ratings, Annotated datasets, Head-mounted-displays, Immersive technologies, Media application, Video quality, Augmented reality
National Category
Telecommunications
Identifiers
urn:nbn:se:bth-25548 (URN)10.1109/ICSPCS58109.2023.10261151 (DOI)2-s2.0-85174510305 (Scopus ID)9798350333510 (ISBN)
Conference
16th International Conference on Signal Processing and Communication System, ICSPCS 2023, Bydgoszcz, 6 Sept - 8 Sept 2023
Funder
Knowledge Foundation, 20220068Knowledge Foundation, 20170056
Note

  

Available from: 2023-11-07 Created: 2023-11-07 Last updated: 2023-11-08Bibliographically approved
Chu, T. M., Zepernick, H.-J. & Duong, T. Q. (2023). Full-Duplex Cooperative NOMA Short-Packet Communications with K-Means Clustering. In: IEEE Workshop on Statistical Signal Processing Proceedings: . Paper presented at 22nd IEEE Statistical Signal Processing Workshop, SSP 2023, Hanoi,July 2-5, 2023. (pp. 576-580). IEEE Computer Society
Open this publication in new window or tab >>Full-Duplex Cooperative NOMA Short-Packet Communications with K-Means Clustering
2023 (English)In: IEEE Workshop on Statistical Signal Processing Proceedings, IEEE Computer Society, 2023, p. 576-580Conference paper, Published paper (Refereed)
Abstract [en]

Fifth-generation (5G) and future sixth-generation (6G) mobile networks aim at offering ultra-reliable, low-latency, and massive machine-type communications. In this context, this paper studies full-duplex (FD) cooperative non-orthogonal multiple access (C-NOMA) short-packet communications (SPC) with K-means clustering of user equipment regarding block error rate (BLER) and sum rate. Analytical expressions are derived for the BLER and sum rate allowing to assess the performance of the considered system. The numerical results reveal the benefits of the FD C-NOMA SPC system, illustrate trade-offs between BLER and sum rate, and show the impact of the transmit signal-to-noise ratio and number of channel uses on the performance. © 2023 IEEE.

Place, publisher, year, edition, pages
IEEE Computer Society, 2023
Series
IEEE Statistical Signal Processing Workshop (SSP), ISSN 2373-0803, E-ISSN 2693-3551
Keywords
cooperative NOMA, Full-duplex relaying, K-means clustering, short-packet communications, 5G mobile communication systems, Cooperative communication, Economic and social effects, Finite difference method, Signal to noise ratio, Block error rates, Full-duplex, K-means++ clustering, Multiple access, Non-orthogonal, Performance, Short packet communication, Sum-rate
National Category
Telecommunications
Identifiers
urn:nbn:se:bth-25406 (URN)10.1109/SSP53291.2023.10208051 (DOI)001051091700117 ()2-s2.0-85168910823 (Scopus ID)9781665452458 (ISBN)
Conference
22nd IEEE Statistical Signal Processing Workshop, SSP 2023, Hanoi,July 2-5, 2023.
Available from: 2023-09-20 Created: 2023-09-20 Last updated: 2023-10-26Bibliographically approved
Sundstedt, V., Boeva, V., Zepernick, H.-J., Goswami, P., Cheddad, A., Tutschku, K., . . . Arlos, P. (2023). HINTS: Human-Centered Intelligent Realities. In: Håkan Grahn, Anton Borg and Martin Boldt (Ed.), 35th Annual Workshop of the Swedish Artificial Intelligence Society SAIS 2023: . Paper presented at 35th Annual Workshop of the Swedish Artificial Intelligence Society SAIS 2023, Karlskrona, June 12-13, 2023 (pp. 9-17). Linköping University Electronic Press
Open this publication in new window or tab >>HINTS: Human-Centered Intelligent Realities
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2023 (English)In: 35th Annual Workshop of the Swedish Artificial Intelligence Society SAIS 2023 / [ed] Håkan Grahn, Anton Borg and Martin Boldt, Linköping University Electronic Press, 2023, p. 9-17Conference paper, Published paper (Refereed)
Abstract [en]

During the last decade, we have witnessed a rapiddevelopment of extended reality (XR) technologies such asaugmented reality (AR) and virtual reality (VR). Further, therehave been tremendous advancements in artificial intelligence(AI) and machine learning (ML). These two trends will havea significant impact on future digital societies. The vision ofan immersive, ubiquitous, and intelligent virtual space opensup new opportunities for creating an enhanced digital world inwhich the users are at the center of the development process,so-calledintelligent realities(IRs).The “Human-Centered Intelligent Realities” (HINTS) profileproject will develop concepts, principles, methods, algorithms,and tools for human-centered IRs, thus leading the wayfor future immersive, user-aware, and intelligent interactivedigital environments. The HINTS project is centered aroundan ecosystem combining XR and communication paradigms toform novel intelligent digital systems.HINTS will provide users with new ways to understand,collaborate with, and control digital systems. These novelways will be based on visual and data-driven platforms whichenable tangible, immersive cognitive interactions within realand virtual realities. Thus, exploiting digital systems in a moreefficient, effective, engaging, and resource-aware condition.Moreover, the systems will be equipped with cognitive featuresbased on AI and ML, which allow users to engage with digitalrealities and data in novel forms. This paper describes theHINTS profile project and its initial results. ©2023, Copyright held by the authors   

Place, publisher, year, edition, pages
Linköping University Electronic Press, 2023
Series
Linköping Electronic Conference Proceedings, ISSN 1650-3686, E-ISSN 1650-3740 ; 199
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:bth-25413 (URN)10.3384/ecp199001 (DOI)9789180752749 (ISBN)
Conference
35th Annual Workshop of the Swedish Artificial Intelligence Society SAIS 2023, Karlskrona, June 12-13, 2023
Funder
Knowledge Foundation, 20220068
Available from: 2023-09-22 Created: 2023-09-22 Last updated: 2023-12-28Bibliographically approved
Chu, T. M. & Zepernick, H.-J. (2023). Modulation and Detection for High Doppler Channels: An Overview on OTFS Modulation. Blekinge Tekniska Högskola
Open this publication in new window or tab >>Modulation and Detection for High Doppler Channels: An Overview on OTFS Modulation
2023 (English)Report (Other academic)
Place, publisher, year, edition, pages
Blekinge Tekniska Högskola, 2023
National Category
Signal Processing
Research subject
Applied Signal Processing
Identifiers
urn:nbn:se:bth-25285 (URN)
Projects
Directed Air Data Link
Funder
Vinnova, 2019-02769
Available from: 2023-08-17 Created: 2023-08-17 Last updated: 2023-08-22Bibliographically approved
Chu, T. M., Fiedler, M., Kelkkanen, V., Lindero, D. & Zepernick, H.-J. (2023). On the Perception of Frame Stalls in Remote VR for Task and Task-Free Subjective Tests. In: 2023 15th International Conference on Quality of Multimedia Experience, QoMEX 2023: . Paper presented at 15th International Conference on Quality of Multimedia Experience, QoMEX 2023, Ghent, 20-22 June 2023. (pp. 201-204). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>On the Perception of Frame Stalls in Remote VR for Task and Task-Free Subjective Tests
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2023 (English)In: 2023 15th International Conference on Quality of Multimedia Experience, QoMEX 2023, Institute of Electrical and Electronics Engineers (IEEE), 2023, p. 201-204Conference paper, Published paper (Refereed)
Abstract [en]

The performance of remotely rendered Virtual Reality (VR) is sensitive to temporal disturbances in communication channels. An earlier Quality of Experience (QoE) study of temporal impacts in the form of frame stalls has revealed difficulties with subjective disturbance ratings while performing a task in an interactive 6-degrees-of-freedom (DOF) VR environment. This study follows up on above observation by comparing QoE ratings in the presence and absence of a task. The exploratory findings show that the task-free subjective tests yield lower ratings compared to the subjective tests with task. This indicates that the participants became more sensitive to temporal impairments in the absence of a task. Also, the positive impact of reprojection on the QoE ratings decreased in the task-free environment. The simulator sickness results for individual symptoms were on similar low levels in both settings. The total score (TS) of sickness severity was higher after than before the subjective tests with task while the difference between the TS before and after the task-free subjective tests was insignificant, © 2023 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2023
Series
International Workshop on Quality of Multimedia Experience (QoMEX), ISSN 2372-7179, E-ISSN 2472-7814
Keywords
Diseases, Subjective testing, Virtual reality, 6 degree of freedom, Communications channels, Follow up, Performance, Re-projection, Simulator sickness, Quality of service
National Category
Computer Sciences Other Medical Sciences not elsewhere specified
Identifiers
urn:nbn:se:bth-25320 (URN)10.1109/QoMEX58391.2023.10178492 (DOI)001037196100040 ()2-s2.0-85167358478 (Scopus ID)9798350311730 (ISBN)
Conference
15th International Conference on Quality of Multimedia Experience, QoMEX 2023, Ghent, 20-22 June 2023.
Funder
Knowledge Foundation, 20170056Knowledge Foundation, 20220068
Available from: 2023-08-24 Created: 2023-08-24 Last updated: 2023-09-15Bibliographically approved
Chu, T. M., Zepernick, H.-J., Hook, A., Westerhagen, A. & Granbom, B. (2023). OTFS Modulation for Non-Terrestrial Networks: Concepts, Applications, Benefits, and Challenges. In: Wysocki B.J., Wysocki T.A. (Ed.), 2023 16th International Conference on Signal Processing and Communication System, ICSPCS 2023 - Proceedings: . Paper presented at 2023 16th International Conference on Signal Processing and Communication System, ICSPCS 2023, Bydgoszcz, 6 Sept - 8 Sept 2023. IEEE
Open this publication in new window or tab >>OTFS Modulation for Non-Terrestrial Networks: Concepts, Applications, Benefits, and Challenges
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2023 (English)In: 2023 16th International Conference on Signal Processing and Communication System, ICSPCS 2023 - Proceedings / [ed] Wysocki B.J., Wysocki T.A., IEEE, 2023Conference paper, Published paper (Refereed)
Abstract [en]

Fifth generation (5G), beyond 5G (B5G), and future sixth generation (6G) mobile networks are foreseen to increasingly account for heterogeneous networks toward ubiquitous communications with non-terrestrial networks (NTNs). Furthermore, in 5G mobile networks, massive machine type communications has been introduced for Internet of Things (IoT) applications aiming at low energy consumption, low to medium data rates, burst transmissions, and massive connectivity. It is expected that IoT communications will take an even larger portion in B5G and 6G mobile networks. Robust communications in such high-mobility NTN deployments including unmanned aerial vehicles (UAVs), airborne platforms, and satellite systems, need novel modulation waveforms that can deal with the induced severe Doppler effects. Orthogonal time frequency space (OTFS) modulation has gained tremendous interest in recent years as an effective technology for coping with high Doppler channels. OTFS essentially transforms a time-varying fading channel into a quasi-static channel in the delay-Doppler domain. In this paper, for the first time, an overview on OTFS modulation for NTNs is provided including basic concepts and applications in UAVs, airborne networks, and satellite systems. A case study related to an application in high Doppler airborne communication networks is also provided to illustrate the potential of OTFS modulation in providing robust transmission links in high-mobility scenarios. This survey will be helpful for researchers and practitioners to keep abreast about the potential of OTFS modulation in NTNs. © 2023 IEEE.

Place, publisher, year, edition, pages
IEEE, 2023
Keywords
5G mobile communication systems, Antennas, Communication satellites, Energy utilization, Fading channels, Internet of things, Low power electronics, Vehicle to vehicle communications, Wireless networks, Aerial vehicle, Benefit and challenges, Doppler, High mobility, Low energy consumption, Machinetype communication (MTC), Satellite system, Terrestrial networks, Time-frequency space, Ubiquitous communication, Heterogeneous networks
National Category
Communication Systems
Identifiers
urn:nbn:se:bth-25554 (URN)10.1109/ICSPCS58109.2023.10261131 (DOI)2-s2.0-85174530707 (Scopus ID)9798350333510 (ISBN)
Conference
2023 16th International Conference on Signal Processing and Communication System, ICSPCS 2023, Bydgoszcz, 6 Sept - 8 Sept 2023
Projects
Riktad luftdatalänk
Funder
Vinnova, 2019-02769
Available from: 2023-11-06 Created: 2023-11-06 Last updated: 2023-11-06Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-1730-9026

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