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Higher Order Sectorization in FFR-Aided OFDMA Cellular Networks: Spectral- and Energy-Efficiency

Jan Garcia-Morales, Guillem Femenias, Felip Riera-Palou
2019 IEEE Access  
In order to further reinforce its benefits, HOS can be combined with fractional frequency reuse (FFR) techniques to improve the SE and/or energy efficiency (EE) of the network.  ...  It is well known that per macro-site spectral efficiency (SE) can be increased through higher order sectorization (HOS) by radially partitioning the coverage area of each site into multiple sectors and  ...  An optimal power control scheme is derived in [25] allowing a simple energy-efficient optimization problem for FFR-aided OFDMA-based cellular networks.  ... 
doi:10.1109/access.2019.2892187 fatcat:2nnhghpp4bhctfk2ca4efm2nru

Stochastic Geometry Based Framework for Coverage and Rate in Heterogeneous Networks with Sectored Fractional Frequency Reuse

Sani Umar Abdullahi
2017 American Journal of Networks and Communications  
Modern day cellular networks are driven by the need to provide ubiquitous connectivity with very high spectral efficiency to both indoor and outdoor users, hence the need to deploy small cells over conventional  ...  To the best of the author's knowledge, this is the first analytical framework characterizing sectored-FFR schemes using stochastic geometry tools in Hetnets.  ...  The resulting Hetnet thus provides improved spatial reuse for higher network capacity, improved coverage, and better energy efficiency with significantly reduced cost.  ... 
doi:10.11648/j.ajnc.20170601.12 fatcat:dsn62473xzcxbpg5iksd6h7vum

Interference Management Based on RT/nRT Traffic Classification for FFR-Aided Small Cell/Macrocell Heterogeneous Networks

Mostafa Zaman Chowdhury, Md. Tanvir Hossan, Yeong Min Jang
2018 IEEE Access  
Cellular networks are constantly lagging in terms of the bandwidth needed to support the growing high data rate demands.  ...  Fractional frequency reuse (FFR) is an effective approach for increasing spectrum utilization and reducing interference effects in orthogonal frequency division multiple access networks.  ...  An FFR in ultra-dense-network millimetre wave at 26 GHz band is investigated in [9] . This paper mainly focuses on dense network with short inter site distance, and higher order sectorisation.  ... 
doi:10.1109/access.2018.2844843 fatcat:xqscojjonzbhncthb4e6llk4ve

A Survey of Self Organisation in Future Cellular Networks

Osianoh Glenn Aliu, Ali Imran, Muhammad Ali Imran, Barry Evans
2013 IEEE Communications Surveys and Tutorials  
This trend in user behaviour manifests itself as a tremendous pressure on cellular communication systems in terms of demands for capacity, Quality of Service (QoS), and energy efficiency.  ...  Self organisation has been extensively studied and applied in adhoc networks, wireless sensor networks and autonomic computer networks; however in the context of wireless cellular networks, this is the  ...  ACKNOWLEDGMENT The authors would like to thank reviewers for their time, comments and constructive criticism.  ... 
doi:10.1109/surv.2012.021312.00116 fatcat:itby5xi2t5gellfv2fnpos7w2q

Hybrid LiFi and WiFi Networks: A Survey

Xiping Wu, Mohammad Dehghani Soltani, Lai Zhou, Majid Safari, Harald Haas
2021 IEEE Communications Surveys and Tutorials  
In order to tackle the rapidly growing number of mobile devices and their expanding demands for Internet services, network convergence is envisaged to integrate different technology domains.  ...  In this paper, we present a survey-style introduction to HLWNets, starting with a framework of system design in the aspects of network architectures, cell deployments, multiple access and modulation schemes  ...  There exists a trade-off exists between energy efficiency and spectral efficiency, as a higher spectral efficiency requires more energy per bit.  ... 
doi:10.1109/comst.2021.3058296 fatcat:ktvgidxwsfe4jcvrjbzhsj4zxq

Macro- and femtocell interference mitigation in OFDMA wireless systems

Gang Ning, Qinghai Yang, Kyung Sup Kwak, Lajos Hanzo
2012 2012 IEEE Global Communications Conference (GLOBECOM)  
A sub-channel allocation algorithm is developed with the aid of graph-theoretic approaches for optimizing the femtocell throughput in dense femtocells deployment scenarios.  ...  Adaptive power allocation is performed among the femtocells for further enhancing the system throughput and the attainable performance is quantified.  ...  Fig. 1 . 1 FFR based seven-cell cellular networks. Fig. 2 . 2 The femtocell networks in the coverage of the macrocell network.  ... 
doi:10.1109/glocom.2012.6503924 dblp:conf/globecom/NingYKH12 fatcat:3ksejoiya5f6lgvpkv2uteo4je

Planning Wireless Cellular Networks of Future: Outlook, Challenges and Opportunities

Azar Taufique, Mona Jaber, Ali Imran, Zaher Dawy, Elias Yacoub
2017 IEEE Access  
Furthermore, in emerging cellular systems that incorporate a variety of different cell sizes and types, heterogeneous networks (HetNets), energy efficiency, self-organizing network features, control and  ...  INDEX TERMS HetNets planning, energy efficient planning, 5G network planning.  ...  The key idea is that energy awareness should be introduced at the planning stage in order to reach energy-efficient network operation.  ... 
doi:10.1109/access.2017.2680318 fatcat:b5fcryi4obctnp6tpbdvpmbley

Interference Management in 5G and Beyond Network: Requirements, Challenges and Future Directions

Maraj Uddin Ahmed Siddiqui, Faizan Qamar, Faisal Ahmed, Quang Ngoc Nguyen, Rosilah Hassan
2021 IEEE Access  
As a result, the proposed FH method assured higher antiinterference and spectral efficiency than traditional FH.  ...  spectral efficiency for both cellcenter and cell-edge users.  ...  She also had experience as Deputy Director in Academic Entrepreneurship and Innovation for seven years at University.  ... 
doi:10.1109/access.2021.3073543 fatcat:pszxfc6abbg6lkdf2yegsiobfy

Resource Allocation and Interference Management for D2D-Enabled DL/UL Decoupled Het-Nets

Abdulkadir Celik, Redha M. Radaydeh, Fawaz S. Al-Qahtani, Mohamed-Slim Alouini
2017 IEEE Access  
In this paper, resource allocation and interference mitigation are investigated for heterogeneous networks (HetNets) where the lowest tier consists of device-to-device (D2D) cells.  ...  In order to alleviate dead-zone problem, we first consider downlink/uplink (DL/UL) decoupling (DUDe) user association and quantify its capability on interference management and networkwide D2D performance  ...  In FFR-aided OFDMA cellular systems, achievable spectral efficiency of D2D communication was analytically investigated in [7] .  ... 
doi:10.1109/access.2017.2760350 fatcat:73ygfpfxqngytjxeh4g5eazkz4

2020 Index IEEE Transactions on Vehicular Technology Vol. 69

2020 IEEE Transactions on Vehicular Technology  
Revocable Data-Sharing Scheme in VANETs; TVT Dec. 2020 15933-15946 Hoseini, S.A., Ding, M., Hassan, M., and Chen, Y., Analyzing the Impact of Molecular Re-Radiation on the MIMO Capacity in High-Frequency  ...  Chen, Y., Networks TVT Oct. 2020 11445-11457 Jian, X., see Fu, S., TVT April 2020 4367-4378 Jian, X., see Li, P., TVT July 2020 7998-8002 Jian, Y., see Gu, Q., TVT Sept. 2020 10348-10361 Jiang  ...  ., TVT Aug. 2020 8395-8406 A Trade-Off Between Energy Efficiency and Spectral Efficiency in Macro-Femtocell Networks.  ... 
doi:10.1109/tvt.2021.3055470 fatcat:536l4pgnufhixneoa3a3dibdma

Survey of Large-Scale MIMO Systems

Kan Zheng, Long Zhao, Jie Mei, Bin Shao, Wei Xiang, Lajos Hanzo
2015 IEEE Communications Surveys and Tutorials  
Key techniques of both the physical and network layers are also detailed. Finally, we conclude with a range of challenges and future research topics.  ...  Furthermore, it results in substantially increased carbon dioxide emissions.  ...  reducing implementation complexity and overhead with an acceptable performance loss. • Single-cell scheduling: Under the single-cell scenarios, resource allocation for energy-efficient OFDMA systems with  ... 
doi:10.1109/comst.2015.2425294 fatcat:54d6fjk2jbezhft7y6rg33faiq

Bandwidth Sharing for Relaying in Cellular Systems

Narayanan Krishnan, Roy D. Yates, Narayan B. Mandayam, Jignesh S. Panchal
2012 IEEE Transactions on Wireless Communications  
We also show specific results with 𝑁 user scenario and also single user case in order to understand how the bandwidth and power are allocated.  ...  We investigate bandwidth allocation in next generation cellular systems employing relays similar to LTE advanced systems with type-I relays.  ...  ACKNOWLEDGEMENTS This work is supported by the NSF grants CCF-0634973 and CNS-0721826.  ... 
doi:10.1109/twc.2011.110711.102126 fatcat:6xensbbsobda3dp5j6t2yjzhzm

6G Enabled Smart Infrastructure for Sustainable Society: Opportunities, Challenges, and Research Roadmap

Agbotiname Lucky Imoize, Oluwadara Adedeji, Nistha Tandiya, Sachin Shetty
2021 Sensors  
Additionally, we present new use cases of the 6G technology in agriculture, education, media and entertainment, logistics and transportation, and tourism.  ...  Though some of the candidate technologies in the 5G standards will apply to 6G wireless networks, key disruptive technologies that will guarantee the desired quality of physical experience to achieve ubiquitous  ...  Networks From Aerial to Volumetric Spectral and Energy Efficiency.  ... 
doi:10.3390/s21051709 pmid:33801302 pmcid:PMC7958349 fatcat:2alvcdqlvfcq5chfkv4n3wftpu

IEEE Microwave Theory and Techniques Society

2007 IEEE Microwave Magazine  
In order to determine whether a given document is the current edition and whether it has been amended through the issuance of amendments, corrigenda, or errata, visit the IEEE Standards Association website  ...  These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods.  ...  When UFPCT=4, for example, each cell chooses one of the three FFR patterns (sector 1, sector 2 and sector 3 pattern) as shown in Figure 463 (when UFPCT=3, the same FFR patterns shown in Figure 463  ... 
doi:10.1109/mmw.2007.316256 fatcat:26oxmuglerc23mgeimdf35omuy

IEEE Microwave Theory and Techniques Society

2006 IEEE Microwave Magazine  
In order to determine whether a given document is the current edition and whether it has been amended through the issuance of amendments, corrigenda, or errata, visit the IEEE Standards Association website  ...  These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods.  ...  When UFPCT=4, for example, each cell chooses one of the three FFR patterns (sector 1, sector 2 and sector 3 pattern) as shown in Figure 463 (when UFPCT=3, the same FFR patterns shown in Figure 463  ... 
doi:10.1109/mmw.2006.1634021 fatcat:tgzwn33birghjdtgzmj7uo6z3m
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