Results 31 to 40 of about 1,344,414 (278)
A Hybrid-Grant Random Access Scheme in Massive MIMO Systems for IoT
IEEE Access, 2020 The grant-free random access (RA) can minimize the access delay but also brings severe data transmission interferences. To overcome this defect, we propose a new RA scheme that inserts a base station (BS) broadcasting message after user equipments (UEs ...
Qi Zhang, Shi Jin, Hongbo Zhu
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NOMA-Based Random Access in mMTC XL-MIMO
IEEE Access, 2023 In machine-type communication (MTC), massive access attempts are generated and the massive MIMO is the key technology to support this demand. To support massive MTC (mMTC), the recent extra-large scale massive multiple-input multiple-output (XL-MIMO ...
Thiago Augusto Bruza Alves, Taufik Abrao
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Grant-Free Massive Random Access With a Massive MIMO Receiver [PDF]
2019 53rd Asilomar Conference on Signals, Systems, and Computers, 2019 We consider the problem of unsourced random access (U-RA), a grant-free uncoordinated form of random access, in a wireless channel with a massive MIMO base station equipped with a large number $M$ of antennas and a large number of wireless single-antenna devices (users).
Fengler, Alexander +3 more
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Massive Open Access Publications
, 2020 A huge collaborative open science model is proposed. Many authors collaborating in a paper leads to a substantial reduction for the Article Processing Charges (APCs) in the Open Access Journals. This can significantly stimulate research within a healthier citizen and open science culture.
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Distributed Management of Massive Data: an Efficient Fine-Grain Data Access Scheme [PDF]
, 2008 This paper addresses the problem of efficiently storing and accessing massive data blocks in a large-scale distributed environment, while providing efficient fine-grain access to data subsets.
A. Bassi +16 more
core +7 more sources
Massive Uncoordinated Access With Massive MIMO: A Dictionary Learning Approach
IEEE Transactions on Wireless Communications, 2020 Massive machine-type communications (mMTC) or massive Internet of things (IoT) is one of the key application scenarios of fifth generation (5G) and beyond cellular networks. Since initial access procedures of legacy systems are not suitable for massive connectivity due to increased collision probability and prohibitive overhead, it is of great interest
Yonghee Han, Bhaskar D. Rao, Jungwoo Lee
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Massive access technology in 6G cellular Internet of things network
物联网学报, 2020 To realize Internet of everything (IoE),the 6G cellular Internet of things (IoT) network need to provide wireless access with low power,massive connectivity and wide coverage.Through the analysis and research on the massive access technology in 6G ...
Feiyan TIAN +3 more
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Random access scheme for different MTC scenario requirement
Tongxin xuebao, 2020 For the different random access requirements of the mixed scenarios of ultra-reliable low latency (URLLC) and massive machine type communications (mMTC) in MTC,a random access scheme based on devices grouping was proposed.The proposed scheme divided the ...
Zhefu WU +3 more
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IEEE Access, 2018 Machine-to-machine (M2M) communications refer to the autonomous interaction between connected devices without the human intervention. Recently, the Third-Generation Partnership Project (3GPP) introduced the Long-Term Evolution (LTE) and Long-Term ...
Huda Althumali, Mohamed Othman
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The Strongly Asynchronous Massive Access Channel
, 2018 This paper considers a Strongly Asynchronous and Slotted Massive Access Channel (SAS-MAC) where $K_n:=e^{n\nu}$ different users transmit a randomly selected message among $M_n:=e^{nR}$ ones within a strong asynchronous window of length $A_n:=e^{n\alpha}$
Devroye, Natasha +2 more
core +2 more sources