Results 11 to 20 of about 442,961 (254)
Access Delay Constrained Activity Detection in Massive Random Access [PDF]
2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2021 In 5G and future generation wireless systems, massive IoT networks with bursty traffic are expected to co-exist with cellular systems to serve several latency-critical applications. Thus, it is important for the access points to identify the active devices promptly with minimal resource consumption to enable massive machine-type communication without ...
Jyotish Robin, Elza Erkip
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Massive Unsourced Random Access for Massive MIMO Correlated Channels [PDF]
GLOBECOM 2020 - 2020 IEEE Global Communications Conference, 2020 This paper investigates the massive random access for a huge amount of user devices served by a base station (BS) equipped with a massive number of antennas. We consider a grant-free unsourced random access (U-RA) scheme where all users possess the same codebook and the BS aims at declaring a list of transmitted codewords and recovering the messages ...
Xinyu Xie +3 more
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Massive Uncoordinated Access With Random User Activity [PDF]
2021 IEEE International Symposium on Information Theory (ISIT), 2021 12 pages, 3 figures; presented in IEEE International Symposium on Information Theory (ISIT) 2021; simulation code available at: https://github.com/khachoang1412 ...
Khac-Hoang Ngo +3 more
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Random Access Protocols for Massive MIMO [PDF]
IEEE Communications Magazine, 2017 5G wireless networks are expected to support new services with stringent requirements on data rates, latency and reliability. One novel feature is the ability to serve a dense crowd of devices, calling for radically new ways of accessing the network. This is the case in machine-type communications, but also in urban environments and hotspots.
Elisabeth de Carvalho +4 more
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Improving Massive Access to IoT Gateways
Performance Evaluation, 2022 IoT networks handle incoming packets from large numbers of IoT Devices (IoTDs) to IoT Gateways. This can lead to the IoT Massive Access Problem that causes bu er overflow, large end-to-end delays and missed deadlines. This paper analyzes a novel tra c shaping method named the Quasi-Deterministic Tra c Policy (QDTP) that mitigates this problem by ...
Erol Gelenbe +2 more
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Massive Access in Media Modulation Based Massive Machine-Type Communications [PDF]
IEEE Transactions on Wireless Communications, 2022 Accepted by IEEE Transactions on Wireless Communications.
Li Qiao 0001 +5 more
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Large-scale terminal access algorithm based on slot ALOHA and adaptive access class barring
物联网学报, 2021 In order to solve the problem of high collision rate and low timeliness of large-scale terminals access in the Internet of things, a large-scale terminal access algorithm based on slot ALOHA and adaptive access class barring (ACB) was proposed.Firstly ...
Zhenyu ZHU +3 more
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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).
Alexander Fengler +3 more
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Phase Transition Analysis for Covariance-Based Massive Random Access With Massive MIMO [PDF]
IEEE Transactions on Information Theory, 2022 This paper considers a massive random access problem in which a large number of sporadically active devices wish to communicate with a base station (BS) equipped with massive multiple-input multiple-output (MIMO) antennas. Each device is preassigned a unique signature sequence, and the BS identifies the active devices by detecting which sequences are ...
Zhilin Chen +3 more
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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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