Pub Date : 2021-12-03DOI: 10.3389/frcmn.2021.794311
Shuping Dang, M. Di Renzo, Miaowen Wen, Marwa Chafii, Y. Ko, B. Uchôa-Filho, Abdelhamid Younis
Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom, Université Paris-Saclay, CNRS, CentraleSupélec, Laboratoire des Signaux et Systèmes, Gif-sur-Yvette, France, The School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China, The Division of Engineering, New York University (NYU) Abu Dhabi, Abu Dhabi, United Arab Emirates, The Department of Electronic Engineering, University of York, York, United Kingdom, The Department of Electrical Engineering, Federal University of Santa Catarina, Florianópolis, Brazil, Electrical and Electronics Engineering Department, Faculty of Engineering, University of Benghazi, Benghazi, Libya
{"title":"Editorial: Index Modulation for 6G Communications","authors":"Shuping Dang, M. Di Renzo, Miaowen Wen, Marwa Chafii, Y. Ko, B. Uchôa-Filho, Abdelhamid Younis","doi":"10.3389/frcmn.2021.794311","DOIUrl":"https://doi.org/10.3389/frcmn.2021.794311","url":null,"abstract":"Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom, Université Paris-Saclay, CNRS, CentraleSupélec, Laboratoire des Signaux et Systèmes, Gif-sur-Yvette, France, The School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China, The Division of Engineering, New York University (NYU) Abu Dhabi, Abu Dhabi, United Arab Emirates, The Department of Electronic Engineering, University of York, York, United Kingdom, The Department of Electrical Engineering, Federal University of Santa Catarina, Florianópolis, Brazil, Electrical and Electronics Engineering Department, Faculty of Engineering, University of Benghazi, Benghazi, Libya","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131880245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-30DOI: 10.3389/frcmn.2021.710781
H. Saarnisaari, A. Chaoub, Marjo Heikkilä, Amit Singhal, V. Bhatia
Despite developments in communication systems over the last few decades, a digital divide exists in the unconnected part of the world. The latter is characterized by large distances to internet access points, underdeveloped infrastructure, sparse populations, and low incomes. This concern of digital divide is raised in the sixth generation’s (6G) initial vision as an extremely important topic. However, it is important to understand affiliated challenges and potential solutions to achieve this vision. Motivated by the recent backhaul link forecasts that expect a dominance of the microwave technology within the backhauling market, this paper studies the potential of a low-power terrestrial microwave backhaul from the sufficient-data-rate and solar powering perspective. Competing technologies (e.g., fiber) may not be energy efficient and commercially viable for global connectivity. Since rural and remote areas may not have grid power, we look at the viability of alternative sustainable sources, in particular solar power, to power the wireless backhaul in 6G. In addition, we also explore services for the operators and users to use the system efficiently. Since the access points are connected to backhaul, we also compare the two prominent solutions based on low-power small-radius cells and a mega-cell that covers a large area and show insights on the power autonomy of the systems. In the end, we propose directions for research and deployment for an inclusive connectivity as a part of future 6G networks.
{"title":"Wireless Terrestrial Backhaul for 6G Remote Access: Challenges and Low Power Solutions","authors":"H. Saarnisaari, A. Chaoub, Marjo Heikkilä, Amit Singhal, V. Bhatia","doi":"10.3389/frcmn.2021.710781","DOIUrl":"https://doi.org/10.3389/frcmn.2021.710781","url":null,"abstract":"Despite developments in communication systems over the last few decades, a digital divide exists in the unconnected part of the world. The latter is characterized by large distances to internet access points, underdeveloped infrastructure, sparse populations, and low incomes. This concern of digital divide is raised in the sixth generation’s (6G) initial vision as an extremely important topic. However, it is important to understand affiliated challenges and potential solutions to achieve this vision. Motivated by the recent backhaul link forecasts that expect a dominance of the microwave technology within the backhauling market, this paper studies the potential of a low-power terrestrial microwave backhaul from the sufficient-data-rate and solar powering perspective. Competing technologies (e.g., fiber) may not be energy efficient and commercially viable for global connectivity. Since rural and remote areas may not have grid power, we look at the viability of alternative sustainable sources, in particular solar power, to power the wireless backhaul in 6G. In addition, we also explore services for the operators and users to use the system efficiently. Since the access points are connected to backhaul, we also compare the two prominent solutions based on low-power small-radius cells and a mega-cell that covers a large area and show insights on the power autonomy of the systems. In the end, we propose directions for research and deployment for an inclusive connectivity as a part of future 6G networks.","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128986095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-19DOI: 10.3389/frcmn.2021.793084
H. Dahrouj, Ahmed Douik, M. El-Hajjar, Megumi Kaneko, Yonghui Li, D. T. Ngo, M. Saad, Kaiming Shen, Jun Zhang
King Abdullah University of Science and Technology, Thuwal, Saudi Arabia, California Institute of Technology, Pasadena, CA, United States, University of Southampton, Southampton, United Kingdom, National Institute of Informatics, Chiyoda-ku, Japan, The University of Sydney, Darlington, NSW, Australia, The University of Newcastle, Callaghan, NSW, Australia, University of Sharjah, Sharjah, United Arab Emirates, The Chinese University of Hong Kong, Shenzhen, China, Hong Kong University of Science and Technology, Hong Kong, China
{"title":"Editorial: Resource Allocation in Cloud-Radio Access Networks and Fog-Radio Access Networks for B5G Systems","authors":"H. Dahrouj, Ahmed Douik, M. El-Hajjar, Megumi Kaneko, Yonghui Li, D. T. Ngo, M. Saad, Kaiming Shen, Jun Zhang","doi":"10.3389/frcmn.2021.793084","DOIUrl":"https://doi.org/10.3389/frcmn.2021.793084","url":null,"abstract":"King Abdullah University of Science and Technology, Thuwal, Saudi Arabia, California Institute of Technology, Pasadena, CA, United States, University of Southampton, Southampton, United Kingdom, National Institute of Informatics, Chiyoda-ku, Japan, The University of Sydney, Darlington, NSW, Australia, The University of Newcastle, Callaghan, NSW, Australia, University of Sharjah, Sharjah, United Arab Emirates, The Chinese University of Hong Kong, Shenzhen, China, Hong Kong University of Science and Technology, Hong Kong, China","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114163511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-11DOI: 10.3389/frcmn.2021.733698
Debdeep Sarkar , Y. Antar
In this paper, we demonstrate the usefulness of MoM (Method-of-Moments) based methods in efficient path-loss modelling for SISO (single-input single-output) communication links assisted by IRS (Intelligent Reflecting Surfaces). Being a full-wave computational electromagnetic tool, MoM is better equipped compared to high-frequency asymptotic methods like PO (Physical Optics), to handle the crucial electromagnetic (EM) effects like: mutual coupling between IRS unit-cells or interactions with spherical wave-front in antenna near-field. Furthermore, in terms of computational speed, accuracy and reproducibility, the MoM-based MATLAB Antenna Toolbox is significantly advantageous to emulate IRS-assisted wireless channels, as compared to the in-house FDTD (finite-difference time-domain) techniques. We consider a SISO system of two half-wavelength dipoles, and use a rectangular array of circular loops loaded with lumped circuit components as IRS. The lumped circuit loading enables us to control the reactance of individual unit-cells, resulting in alteration of IRS reflection coefficient and consequent changes in channel characteristics. Using numerous numerical simulations, we highlight the impacts of various IRS-parameters like: electrical size and number of unit-cells, distance of IRS from the transmitter/receiver as well as mutual coupling, on the path-loss models (both sub-6 GHz and mm-wave).
{"title":"Electromagnetic Insights Into Path Loss Modelling of IRS-Assisted SISO Links: Method-Of-Moment Based Analysis","authors":"Debdeep Sarkar , Y. Antar","doi":"10.3389/frcmn.2021.733698","DOIUrl":"https://doi.org/10.3389/frcmn.2021.733698","url":null,"abstract":"In this paper, we demonstrate the usefulness of MoM (Method-of-Moments) based methods in efficient path-loss modelling for SISO (single-input single-output) communication links assisted by IRS (Intelligent Reflecting Surfaces). Being a full-wave computational electromagnetic tool, MoM is better equipped compared to high-frequency asymptotic methods like PO (Physical Optics), to handle the crucial electromagnetic (EM) effects like: mutual coupling between IRS unit-cells or interactions with spherical wave-front in antenna near-field. Furthermore, in terms of computational speed, accuracy and reproducibility, the MoM-based MATLAB Antenna Toolbox is significantly advantageous to emulate IRS-assisted wireless channels, as compared to the in-house FDTD (finite-difference time-domain) techniques. We consider a SISO system of two half-wavelength dipoles, and use a rectangular array of circular loops loaded with lumped circuit components as IRS. The lumped circuit loading enables us to control the reactance of individual unit-cells, resulting in alteration of IRS reflection coefficient and consequent changes in channel characteristics. Using numerous numerical simulations, we highlight the impacts of various IRS-parameters like: electrical size and number of unit-cells, distance of IRS from the transmitter/receiver as well as mutual coupling, on the path-loss models (both sub-6 GHz and mm-wave).","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134477311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.3389/frcmn.2021.731172
H. Mazar, D. Ball
This paper describes the current science-based approach to ensuring public safety from RF-EMF base stations. It acknowledges that a degree of public concern persists despite the fact that dose limits are seldom if ever approached in practice. One plausible contributor to the discord is a tendency within parts of academia and by some planning authorities to pursue a technocratic policy approach to siting wherein public concerns are attributed to scientific uncertainty over health risks, whereas the reality is that societal concerns over base stations is broader. Thus, potential mis-framing of the debate as a purely scientific issue leads to inappropriate risk communication exercises which in fact polarise the situation by disenfranchising other potentially legitimate siting concerns. It is recommended that more attention should be paid to the non-health related siting issues, which could be handled by a thoughtful democratic / deliberative process, and that this should not be conflated with the scientific debate over the uncertain and possibly non-existent risks posed by RF EMF complying with the existing science-based dose limits.
{"title":"Strengths and Limitations of Conventional Approaches to the Risk Assessment and Management of EMF Exposure From 5G and B5G Networks","authors":"H. Mazar, D. Ball","doi":"10.3389/frcmn.2021.731172","DOIUrl":"https://doi.org/10.3389/frcmn.2021.731172","url":null,"abstract":"This paper describes the current science-based approach to ensuring public safety from RF-EMF base stations. It acknowledges that a degree of public concern persists despite the fact that dose limits are seldom if ever approached in practice. One plausible contributor to the discord is a tendency within parts of academia and by some planning authorities to pursue a technocratic policy approach to siting wherein public concerns are attributed to scientific uncertainty over health risks, whereas the reality is that societal concerns over base stations is broader. Thus, potential mis-framing of the debate as a purely scientific issue leads to inappropriate risk communication exercises which in fact polarise the situation by disenfranchising other potentially legitimate siting concerns. It is recommended that more attention should be paid to the non-health related siting issues, which could be handled by a thoughtful democratic / deliberative process, and that this should not be conflated with the scientific debate over the uncertain and possibly non-existent risks posed by RF EMF complying with the existing science-based dose limits.","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127766458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-26DOI: 10.3389/frcmn.2021.733637
Mir Lodro, G. Gradoni, J. Gros, S. Greedy, G. Lerosey
Reconfigurable intelligent surface (RIS) technology is at the forefront for its transformative role in future wireless communication systems such as wireless local area networks (WLAN), sixth-generation (6G) communication, and internet-of-things (IoT). This paper presents RIS-assisted Bluetooth low energy (BLE) communication links in neighbor discovery mode. We optimized the packet error rate (PER) performance of the BLE communication link in a highly reflecting metal enclosure environment. We used one RIS for the PER optimization of four BLE physical (PHY) modes. Then, we used two RISs simultaneously in a distributed and centralized manner to further optimize the PER of all BLE PHY modes. We found PER optimization using two RISs is better than the PER optimization using one RIS. Additionally, PER optimization using a centralized arrangement of RISs outperformed PER optimization using distributed arrangement. We found the coded BLE modes i.e., LE500K and LE125K show lower PER than the uncoded counterpart i.e., LE1M and LE2M. This is because uncoded BLE PHY modes have higher data rates than the coded BLE PHY modes. Because of additional channel power gains introduced by RIS-based passive beamforming, the PER of coded and uncoded BLE PHY modes is further reduced.
{"title":"Reconfigurable Intelligent Surface-Assisted Bluetooth Low Energy Link in Metal Enclosure","authors":"Mir Lodro, G. Gradoni, J. Gros, S. Greedy, G. Lerosey","doi":"10.3389/frcmn.2021.733637","DOIUrl":"https://doi.org/10.3389/frcmn.2021.733637","url":null,"abstract":"Reconfigurable intelligent surface (RIS) technology is at the forefront for its transformative role in future wireless communication systems such as wireless local area networks (WLAN), sixth-generation (6G) communication, and internet-of-things (IoT). This paper presents RIS-assisted Bluetooth low energy (BLE) communication links in neighbor discovery mode. We optimized the packet error rate (PER) performance of the BLE communication link in a highly reflecting metal enclosure environment. We used one RIS for the PER optimization of four BLE physical (PHY) modes. Then, we used two RISs simultaneously in a distributed and centralized manner to further optimize the PER of all BLE PHY modes. We found PER optimization using two RISs is better than the PER optimization using one RIS. Additionally, PER optimization using a centralized arrangement of RISs outperformed PER optimization using distributed arrangement. We found the coded BLE modes i.e., LE500K and LE125K show lower PER than the uncoded counterpart i.e., LE1M and LE2M. This is because uncoded BLE PHY modes have higher data rates than the coded BLE PHY modes. Because of additional channel power gains introduced by RIS-based passive beamforming, the PER of coded and uncoded BLE PHY modes is further reduced.","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127334407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-20DOI: 10.3389/frcmn.2021.734165
Md Hasan Rahman, M. Ranjbar, N. Tran, K. Pham
In this work, we establish the sum-capacity-achieving signaling schemes and the sum-capacity of a 2-user multiple access Rayleigh fading channel with 1-bit output quantization in the presence of Gaussian-mixture co-channel interference. The considered Gaussian mixture channel is an accurate model to capture non-Gaussian co-channel interference plus noise in practical wireless networks under coexistence regimes, especially for those having heterogeneous structures and high frequency reuse factor. By first examining the phases of the optimal input signals, we demonstrate that these phases must be π/2 circularly symmetric. As a result, the problem of optimizing the sum-rate is equivalent to minimizing the conditional output entropy. By establishing the Kuhn-Tucker condition on the optimal amplitude input distributions, we then show that the optimal input amplitudes are bounded. Our proof relies on the convexity of the log of sum of Q functions. Then, given the linearity of the conditional entropy over the feasible set of bounded amplitude distributions, it is concluded that the optimal input signals must have constant amplitudes. Therefore, the use of any π/2 circularly symmetric signaling schemes with constant amplitudes and full power are sum-capacity-achieving. Using these optimal input signals, the sum-capacity can finally be calculated.
{"title":"Optimal Signaling Schemes and Sum-Capacity of 1-bit ADC Fading 2-User MACs under Gaussian-Mixture Interference","authors":"Md Hasan Rahman, M. Ranjbar, N. Tran, K. Pham","doi":"10.3389/frcmn.2021.734165","DOIUrl":"https://doi.org/10.3389/frcmn.2021.734165","url":null,"abstract":"In this work, we establish the sum-capacity-achieving signaling schemes and the sum-capacity of a 2-user multiple access Rayleigh fading channel with 1-bit output quantization in the presence of Gaussian-mixture co-channel interference. The considered Gaussian mixture channel is an accurate model to capture non-Gaussian co-channel interference plus noise in practical wireless networks under coexistence regimes, especially for those having heterogeneous structures and high frequency reuse factor. By first examining the phases of the optimal input signals, we demonstrate that these phases must be π/2 circularly symmetric. As a result, the problem of optimizing the sum-rate is equivalent to minimizing the conditional output entropy. By establishing the Kuhn-Tucker condition on the optimal amplitude input distributions, we then show that the optimal input amplitudes are bounded. Our proof relies on the convexity of the log of sum of Q functions. Then, given the linearity of the conditional entropy over the feasible set of bounded amplitude distributions, it is concluded that the optimal input signals must have constant amplitudes. Therefore, the use of any π/2 circularly symmetric signaling schemes with constant amplitudes and full power are sum-capacity-achieving. Using these optimal input signals, the sum-capacity can finally be calculated.","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126498895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-15DOI: 10.3389/frcmn.2021.741533
Jae-Yeong Lee, Jaehyun Choi, Bumhyun Kim, Yerim Oh, W. Hong
This paper presents a design methodology focused on feeding networks that can improve the insertion loss and coverage efficiencies of millimeter-wave (mm-Wave) phased arrays in mobile terminals. This enhancement is accomplished by using a grounded coplanar waveguide (GCPW) transmission line (TL) with via fences fabricated on single-layer FR-4 PCB. The exemplified 8-element phased arrays incorporating a compact one-dimensional electromagnetic bandgap (1-D EBG) antenna are fed through a 1 × 8 T-junction power divider, which includes the predetermined phased delay lines. To achieve high radiation performance with minimum leakage power or spurious waves in the T-junction power divider, an island-shape GCPW TL topology with via fences featuring high-impedance surfaces (HIS) is devised and fabricated. For further investigation on the radiation performance and spherical coverage of the mm-Wave mobile antenna, a mobile device prototype equipped with two sets of the 8-element phased arrays is prepared and studied. Through extensive simulation and experimental studies, it can be ascertained that the proposed GCPW TL topology with via fences can improve the realized gain at a coverage efficiency of 50% by more than 3 dB, between 26 and 36 GHz.
{"title":"Performance Enhancement of mm-Wave Phased Arrays for Mobile Terminals Through Grounded Coplanar Waveguide Feeding Networks With via Fences","authors":"Jae-Yeong Lee, Jaehyun Choi, Bumhyun Kim, Yerim Oh, W. Hong","doi":"10.3389/frcmn.2021.741533","DOIUrl":"https://doi.org/10.3389/frcmn.2021.741533","url":null,"abstract":"This paper presents a design methodology focused on feeding networks that can improve the insertion loss and coverage efficiencies of millimeter-wave (mm-Wave) phased arrays in mobile terminals. This enhancement is accomplished by using a grounded coplanar waveguide (GCPW) transmission line (TL) with via fences fabricated on single-layer FR-4 PCB. The exemplified 8-element phased arrays incorporating a compact one-dimensional electromagnetic bandgap (1-D EBG) antenna are fed through a 1 × 8 T-junction power divider, which includes the predetermined phased delay lines. To achieve high radiation performance with minimum leakage power or spurious waves in the T-junction power divider, an island-shape GCPW TL topology with via fences featuring high-impedance surfaces (HIS) is devised and fabricated. For further investigation on the radiation performance and spherical coverage of the mm-Wave mobile antenna, a mobile device prototype equipped with two sets of the 8-element phased arrays is prepared and studied. Through extensive simulation and experimental studies, it can be ascertained that the proposed GCPW TL topology with via fences can improve the realized gain at a coverage efficiency of 50% by more than 3 dB, between 26 and 36 GHz.","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126519662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-14DOI: 10.3389/frcmn.2021.769299
S. M. Asad, Ahsen Tahir, R. N. B. Rais, Shuja Ansari, A. Abubakar, S. Hussain, Q. Abbasi, Muhammad Ali Imran
The integration of Private Mobile Networks (PMN) with edge intelligence is expected to play an instrumental role in realizing the next generation of industry applications. This combination collectively termed Intelligent Private Networks (IPN) deployed within the scope of specific industries such as transport systems can unlock several use cases and critical applications that in turn can address rising business demands. This article presents a conceptual IPN that hosts intelligence at the network edge employing emerging technologies that satisfy a number of Next-Generation Railway System (NGRS) applications. NGRS use cases along with their applications and respective beyond 5G (B5G) enabling technologies have been discussed along with possible future research and development directions that will allow these promising technologies to be used and implemented widely.
{"title":"Edge Intelligence in Private Mobile Networks for Next-Generation Railway Systems","authors":"S. M. Asad, Ahsen Tahir, R. N. B. Rais, Shuja Ansari, A. Abubakar, S. Hussain, Q. Abbasi, Muhammad Ali Imran","doi":"10.3389/frcmn.2021.769299","DOIUrl":"https://doi.org/10.3389/frcmn.2021.769299","url":null,"abstract":"The integration of Private Mobile Networks (PMN) with edge intelligence is expected to play an instrumental role in realizing the next generation of industry applications. This combination collectively termed Intelligent Private Networks (IPN) deployed within the scope of specific industries such as transport systems can unlock several use cases and critical applications that in turn can address rising business demands. This article presents a conceptual IPN that hosts intelligence at the network edge employing emerging technologies that satisfy a number of Next-Generation Railway System (NGRS) applications. NGRS use cases along with their applications and respective beyond 5G (B5G) enabling technologies have been discussed along with possible future research and development directions that will allow these promising technologies to be used and implemented widely.","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122012989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-13DOI: 10.3389/frcmn.2021.718945
Malcolm Egan
A wide range of communication systems are corrupted by non-Gaussian noise, ranging from wireless to power line. In some cases, including interference in uncoordinated OFDM-based wireless networks, the noise is both impulsive and multivariate. At present, little is known about the information capacity and corresponding optimal input distributions. In this paper, we derive upper and lower bounds of the information capacity by exploiting non-isotropic inputs. For the special case of sub-Gaussian α-stable noise models, a numerical study reveals that isotropic Gaussian inputs can remain a viable choice, although the performance depends heavily on the dependence structure of the noise.
{"title":"Isotropic and Non-Isotropic Signaling in Multivariate α-Stable Noise","authors":"Malcolm Egan ","doi":"10.3389/frcmn.2021.718945","DOIUrl":"https://doi.org/10.3389/frcmn.2021.718945","url":null,"abstract":"A wide range of communication systems are corrupted by non-Gaussian noise, ranging from wireless to power line. In some cases, including interference in uncoordinated OFDM-based wireless networks, the noise is both impulsive and multivariate. At present, little is known about the information capacity and corresponding optimal input distributions. In this paper, we derive upper and lower bounds of the information capacity by exploiting non-isotropic inputs. For the special case of sub-Gaussian α-stable noise models, a numerical study reveals that isotropic Gaussian inputs can remain a viable choice, although the performance depends heavily on the dependence structure of the noise.","PeriodicalId":106247,"journal":{"name":"Frontiers in Communications and Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131962711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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