Results 21 to 30 of about 1,344,414 (278)
Index Modulation–Aided Mixed Massive Random Access
Frontiers in Communications and Networks, 2021 In this study, a mixed massive random access scheme is considered where part of users transmit both common information and user-specific information, while others transmit only common information.
Zijie Liang, Jianping Zheng, Jie Ni
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Towards Massive Connectivity Support for Scalable mMTC Communications in 5G Networks
IEEE Access, 2018 The fifth generation of cellular communication systems is foreseen to enable a multitude of new applications and use cases with very different requirements.
Carsten Bockelmann +18 more
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A Reconfigurable Access Scheme for Massive-MIMO MTC Networks
IEEE Access, 2021 This paper presents an efficient reconfigurable access scheme for massive machine-type communication networks, where to provide massive connectivity, the base station is equipped with a large-scale antenna array.
Atoosa Dalili Shoaei +2 more
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Massive MIMO for Wireless Sensing with a Coherent Multiple Access Channel [PDF]
, 2015 We consider the detection and estimation of a zero-mean Gaussian signal in a wireless sensor network with a coherent multiple access channel, when the fusion center (FC) is configured with a large number of antennas and the wireless channels between the ...
Chen, Jie +3 more
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Adaptive channel status based access class barring scheme for traffic emergency communication
Dianxin kexue, 2022 In high-density cellular vehicle-to-everything (C-V2X), effective massive access method of cluster communications is the basis to assure the performance index for different services and enhance the spectrum efficiency under limited resource.An improved ...
Jiao WANG, Gongan QIU, Shibing ZHANG
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Detection Techniques for Massive Machine-Type Communications: Challenges and Solutions
IEEE Access, 2020 Massive machine-type communications (mMTC) is one of the key application scenarios of fifth generation (5G) and beyond cellular networks. Bringing the unique technical challenge of supporting a huge number of MTC devices (MTCD) in cellular networks, how ...
Roberto B. Di Renna +3 more
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Hybrid Space-Frequency Access for Underwater Acoustic Networks
IEEE Access, 2022 Underwater acoustic networks have recently risen as an effective support to several marine and oceanic applications. However, the potential presence of a large number of nodes simultaneously connected has pushed the scientific community to address the ...
Andrea Petroni +6 more
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Massive MIMO for Crowd Scenarios: A Solution Based on Random Access [PDF]
, 2014 This paper presents a new approach to intra-cell pilot contamination in crowded massive MIMO scenarios. The approach relies on two essential properties of a massive MIMO system, namely near-orthogonality between user channels and near-stability of ...
de Carvalho, Elisabeth +2 more
core +4 more sources
High-Speed Railway, 2023 The current High-Speed Railway (HSR) communications increasingly fail to satisfy the massive access services of numerous user equipment brought by the increasing number of people traveling by HSRs.
Anwen Liao +7 more
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Rateless Multiple Access: Asymptotic Throughput Analysis and Improvement With Spatial Coupling
IEEE Access, 2018 A novel random code-domain non-orthogonal multiple access (NOMA) framework, rateless multiple access (RMA), is studied in this paper. In RMA, instead of granting each user specific radio resources in a fixed and centralized manner, the access point ...
Zhaoyang Zhang +3 more
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