Massive Unsourced Random Access Over Rician Fading Channels: Design, Analysis, and Optimization
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Massive Unsourced Random Access for NGMA: Architectures, Opportunities, and Challenges
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Patterned Reed–Muller Sequences with Outer A-Channel Codes and Projective Decoding for Slot-Controlled Unsourced Random Access
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DOI: 10.3390/s23115239
Abstract: We propose a novel slot-pattern-control based coded compressed sensing for unsourced random access with an outer A-channel code capable of correcting t errors. Specifically, an RM extension code called patterned Reed–Muller (PRM) code is proposed.… read more here.
Keywords: slot; unsourced random; random access; geometry ... See more keywords