Results 21 to 30 of about 3,601,239 (277)
Spatially-Coupled Random Access on Graphs [PDF]
, 2012 In this paper we investigate the effect of spatial coupling applied to the recently-proposed coded slotted ALOHA (CSA) random access protocol. Thanks to the bridge between the graphical model describing the iterative interference cancelation process of ...
Chiani, Marco +4 more
core +1 more source
Fixed-Symbol Aided Random Access Scheme for Machine-to-Machine Communications
IEEE Access, 2019 The massiveness of devices in crowded Machine-to-Machine (M2M) communications brings new challenges to existing random-access (RA) schemes, such as heavy signaling overhead and severe access collisions.
Zhaoji Zhang, Ying Li, Lei Liu, Wei Hou
doaj +1 more source
Grant-Free Uplink Transmission With Multi-Codebook-Based Sparse Code Multiple Access (MC-SCMA)
IEEE Access, 2019 In sparse code multiple access (SCMA)-based grant-free (GF) access, both user's channel and the selected SCMA codebook (CB) are considered as a transmission signature for multi-user detection (MUD). In conventional SCMA-based grant-free (GF) access where
Ameha Tsegaye Abebe, Chung G. Kang
doaj +1 more source
Multistate spin-transfer-torque random access memory [PDF]
, 2016 Spin-transfer-torque random access memory (STT-RAM) is an emerging non-volatile memory technology that stores information as the relative alignment of two ferromagnets in a magnetic tunnel junction stack.
Asoudegi, Nima
core +1 more source
Modeling and Throughput Optimization of Multi-Gateway LoRaWAN
IEEE Access, 2023 Low power wide area network (LPWAN) technologies have become an integral part of Internet-of-Things (IoT) applications due to their ability to meet key requirements such as long range, low cost, massive device numbers, and low energy consumption.
Baoguo Yu +4 more
doaj +1 more source
ERCIM News, 2015 ICLR submission, 17 pages, 9 figures, 6 tables (with bibliography and appendix)
Karol Kurach +2 more
openaire +3 more sources
Low Latency Random Access for Small Cell Toward Future Cellular Networks
IEEE Access, 2019 In future cellular networks, performance target includes not only increasing data rate, but also reducing latency. The current LTE-Advanced systems require four message exchanges in the random access and uplink transmission procedure, thus inducing high ...
Sundo Kim +5 more
doaj +1 more source
Location-Based Unsourced Random Access
IEEE AccessWe propose a novel approach to Unsourced Random Access (URA) in which the encoding of each user’s message is associated with the user’s location.
Roshanak Soltani +3 more
doaj +1 more source
A Robust Quantum Random Access Memory [PDF]
, 2012 A "bucket brigade" architecture for a quantum random memory of $N=2^n$ memory cells needs $n(n+5)/2$ times of quantum manipulation on control circuit nodes per memory call.
Hong, Fang-Yu +4 more
core +1 more source
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
doaj +1 more source