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   Articles with "unsourced random" as a keyword



Massive Unsourced Random Access Over Rician Fading Channels: Design, Analysis, and Optimization

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recommendations! Published in 2022 at "IEEE Internet of Things Journal"

DOI: 10.1109/jiot.2022.3155670

Abstract: In this article, we investigate an unsourced random access scheme for massive machine-type communications (mMTC) in the sixth-generation (6G) wireless networks with sporadic data traffic. First, we establish a general framework for massive unsourced random… read more here.

Keywords: unsourced random; detection algorithm; massive unsourced; random access ... See more keywords

Unsourced Random Access Over Frequency-Selective Channels

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recommendations! Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2023.3247423

Abstract: We propose and study unsourced random access over frequency-selective channels via orthogonal frequency division multiplexing, employed to mitigate the channel effects. The decoder utilizes a compressed sensing-based joint activity detection and channel estimation algorithm coupled… read more here.

Keywords: unsourced random; frequency selective; access frequency; frequency ... See more keywords

Orthogonal Matching Non-Negative Least Squares for Activity Detection in Unsourced Random Access

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recommendations! Published in 2024 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2024.3374757

Abstract: Unsourced random access (URA) is challenged to support massive connectivity with reduced latency for the future communications networks. Activity detection (AD) has a close correlation with URA under limited number of channel uses. Recently, non-Bayesian… read more here.

Keywords: non negative; least squares; negative least; activity detection ... See more keywords

Unsourced Random Access Using ODMA and Polar Codes

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recommendations! Published in 2024 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2024.3359270

Abstract: We utilize the on-off division multiple access technique in unsourced random access and develop a high-performing solution operating on both Gaussian and fading multiple access channels based on polar coding. We propose a transmission structure… read more here.

Keywords: transmission; using odma; access using; access ... See more keywords
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Massive Unsourced Random Access for NGMA: Architectures, Opportunities, and Challenges

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recommendations! Published in 2023 at "IEEE Network"

DOI: 10.1109/mnet.004.2200462

Abstract: Multiple access technology plays an important role in communication systems, which can enable different users to access the system efficiently and reliably. However, the conventional multiple access technologies are not suitable for future sixth generation… read more here.

Keywords: unsourced random; access ngma; random access; multiple access ... See more keywords

Massive Unsourced Random Access: Exploiting Angular Domain Sparsity

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recommendations! Published in 2022 at "IEEE Transactions on Communications"

DOI: 10.1109/tcomm.2022.3153957

Abstract: This paper investigates the unsourced random access (URA) scheme to accommodate numerous machine-type users communicating to a base station equipped with multiple antennas. Existing works adopt a slotted transmission strategy to reduce system complexity; they… read more here.

Keywords: unsourced random; angular domain; sparsity; random access ... See more keywords

Massive Unsourced Random Access for Near-Field Communications

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recommendations! Published in 2024 at "IEEE Transactions on Communications"

DOI: 10.1109/tcomm.2024.3361529

Abstract: This paper investigates the unsourced random access (URA) problem with a massive multiple-input multiple-output receiver that serves wireless devices in the near-field of radiation. We employ an uncoupled transmission protocol without appending redundancies to the… read more here.

Keywords: field; unsourced random; random access; channel ... See more keywords

Polar-Coded Tensor-Based Unsourced Random Access With Soft Decoding

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recommendations! Published in 2024 at "IEEE Transactions on Communications"

DOI: 10.1109/tcomm.2025.3554633

Abstract: The unsourced random access (URA) has emerged as a viable scheme for supporting the massive machine-type communications (mMTC) in the sixth generation (6G) wireless networks. Notably, the tensor-based URA (TURA), with its inherent tensor structure,… read more here.

Keywords: polar coded; unsourced random; tensor based; random access ... See more keywords

Design and Analysis of Massive Uncoupled Unsourced Random Access With Bayesian Joint Decoding

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recommendations! Published in 2024 at "IEEE Transactions on Vehicular Technology"

DOI: 10.1109/tvt.2024.3377716

Abstract: In this article, we investigate unsourced random access for massive machine-type communications (mMTC) in the sixth-generation (6G) wireless networks. Firstly, we establish a high-efficiency uncoupled framework for massive unsourced random accesss without extra parity check… read more here.

Keywords: bayesian joint; joint decoding; unsourced random; random access ... See more keywords

Erasure Correcting Blind Detection in Unsourced Random Access for Grant-Free Massive Connections

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recommendations! Published in 2024 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2023.3299282

Abstract: The requirement for massive connectivity in 5G and beyond 5G systems pose new challenges to random access protocol design. As a promising technique to afford massive short packet connections, unsourced random access (URA) gains traction.… read more here.

Keywords: fading channels; erasure correcting; access; unsourced random ... See more keywords

Unsourced Random Access Under Quasi-Static Fading Channel: A Less-Is-More Strategy

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recommendations! Published in 2025 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2025.3603032

Abstract: In this work, the unsourced random access problem over a quasi-static fading channel is discussed with a massive number of antennas at the receiver. A novel transmission protocol called the Less-Is-More (LIM) strategy is proposed.… read more here.

Keywords: fading channel; quasi static; unsourced random; random access ... See more keywords