Results 11 to 20 of about 15,257,248 (287)

Capacity analysis of reservation-based random access for broadband wireless access networks [PDF]

open access: yes, 2009
—In this paper we propose a novel model for the capacity analysis on the reservation-based random multiple access system, which can be applied to the medium access control protocol of the emerging WiMAX technology.
Vinel, A, Turlikov, A, Staehle, D, Ni, Q
core   +8 more sources

Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems

open access: yesIEEE Access, 2020
In this paper, we consider a device-to-device communication system, where a multi-antenna mobile user directly communicates with nearby multiple devices, and propose a low-latency random access protocol utilizing random beams at the user.
Jung Hoon Lee, Yunjoo Kim, Il-Gu Lee
doaj   +1 more source

Index Modulation–Aided Mixed Massive Random Access

open access: yesFrontiers 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
doaj   +1 more source

Performance optimization for mMTC in 5G network with multiple random access schemes

open access: yes物联网学报, 2022
To optimize the support for massive machine type communication (mMTC) services with different traffic characteristics, packet-based random access (PBRA) scheme coexists with the connection-based random access (CBRA) scheme in 5G networks.Yet, given the ...
Wen ZHAN   +3 more
doaj   +2 more sources

D2D Assisted Q-Learning Random Access for NOMA-Based MTC Networks

open access: yesIEEE Access, 2022
Machine-type communications (MTC) should account for half the connections to the internet by 2030. The use case massive MTC (mMTC) allows for applications to connect a massive number of low-power and low-complexity devices, leading to challenges in ...
Matheus V. da Silva   +4 more
doaj   +1 more source

Quantum Random Access Memory [PDF]

open access: yesPhysical Review Letters, 2008
A random access memory (RAM) uses n bits to randomly address N=2^n distinct memory cells. A quantum random access memory (qRAM) uses n qubits to address any quantum superposition of N memory cells. We present an architecture that exponentially reduces the requirements for a memory call: O(log N) switches need be thrown instead of the N used in ...
GIOVANNETTI, VITTORIO   +2 more
openaire   +6 more sources

Performance Enhancements for Asynchronous Random Access Protocols over Satellite [PDF]

open access: yes, 2011
In this paper, a novel enhancement of the well known ALOHA random access mechanism is presented which largely extends the achievable throughput compared to traditional ALOHA and provides significantly lower packet loss rates. The novel mechanism, called
Kissling, Christian, Christian Kissling
core   +1 more source

On the Trade-off Between Spectrum Efficiency with Dedicated Access and Short End-to-End Transmission Delays with Random Access in DVB-RCS2 [PDF]

open access: yes, 2013
This paper analyses the performance of TCP over random and dedicated access methods in the context of DVB-RCS2. Random access methods introduce a lower connection delay compared to dedicated methods.
Emmanuel Lochin   +9 more
core   +1 more source

Neural Random-Access Machines

open access: yesERCIM News, 2015
ICLR submission, 17 pages, 9 figures, 6 tables (with bibliography and appendix)
Karol Kurach   +2 more
openaire   +3 more sources

Sliding Group Window with Rebacking off for Collision Avoidance in High-Efficiency Wireless Networks

open access: yesMathematics, 2021
It is difficult for wireless local area networks (WLANs), IEEE 802.11ax high-efficiency WLAN (HEW), to join next-generation innovations such as 5th generation (5G) and Internet of Things (IoT) because they still have their conventional channel access ...
Alaa Omran Almagrabi   +4 more
doaj   +1 more source

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