Results 1 to 10 of about 12,103 (107)

Finite Length Analysis of Irregular Repetition Slotted ALOHA in the Waterfall Region [PDF]

open access: yes, 2018
A finite length analysis is introduced for irregular repetition slotted ALOHA (IRSA) that enables to accurately estimate its performance in the moderate-to-high packet loss probability regime, i.e., in the so-called waterfall region.
Amat, Alexandre Graell i   +1 more
core   +2 more sources

Prioritized Random MAC Optimization via Graph-based Analysis [PDF]

open access: yes, 2015
Motivated by the analogy between successive interference cancellation and iterative belief-propagation on erasure channels, irregular repetition slotted ALOHA (IRSA) strategies have received a lot of attention in the design of medium access control ...
Frossard, Pascal, Toni, Laura
core   +3 more sources

Coded Slotted ALOHA: A Graph-Based Method for Uncoordinated Multiple Access [PDF]

open access: yes, 2015
In this paper, a random access scheme is introduced which relies on the combination of packet erasure correcting codes and successive interference cancellation (SIC). The scheme is named coded slotted ALOHA.
Chiani, Marco   +2 more
core   +1 more source

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
core   +1 more source

Multi-slot Coded ALOHA with Irregular Degree Distribution [PDF]

open access: yes, 2012
This paper proposes an improvement of the random multiple access scheme for satellite communication named Multislot coded ALOHA (MuSCA). MuSCA is a generalization of Contention Resolution Diversity Slotted ALOHA (CRDSA).
Boucheret, Marie-Laure   +2 more
core   +2 more sources

Dwarf Archives: A Compendium of M, L, and T Dwarf Data [PDF]

open access: yes, 2009
Dwarf Archives is an online archive containing astrometric, photometric, and spectroscopic information for all known L and T dwarfs (over 650 objects), as well as a select sample of over 500 M dwarfs.
Adam J. Burgasser   +3 more
core   +1 more source

A New Approach to Tagging Data in the Astronomical Literature [PDF]

open access: yes, 2007
Data Tags are strings used in journals to indicate the origin of the archival data and to enable the reader to recover the data. The NASA/IPAC Infrared Science Archive (IRSA) has recently introduced a new approach to production of data tags and ...
Alexov, Anastasia, Good, John C.
core  

A Framework for Specific Term Recommendation Systems

open access: yes, 2013
In this paper we present the IRSA framework that enables the automatic creation of search term suggestion or recommendation systems (TS). Such TS are used to operationalize interactive query expansion and help users in refining their information need in ...
Lüke, Thomas   +2 more
core   +1 more source

Rotation of Low-mass Stars in Taurus with K2 [PDF]

open access: yes, 2020
We present an analysis of K2 light curves (LCs) from Campaigns 4 and 13 for members of the young (~3 Myr) Taurus association, in addition to an older (~30 Myr) population of stars that is largely in the foreground of the Taurus molecular clouds.
Bouvier, J.   +6 more
core   +4 more sources

Design of the Spitzer Space Telescope Heritage Archive [PDF]

open access: yes, 2009
It is predicted that Spitzer Space Telescope’s cryogen will run out in April 2009, and the final reprocessing for the cryogenic mission is scheduled to end in April 2011, at which time the Spitzer archive will be transferred to the NASA/IPAC Infrared ...
Alexov, A.   +14 more
core  

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