Zamoum, Selma and Lacan, Jérôme and Boucheret, Marie-Laure
and Dupé, Jean-Baptiste and Gineste, Mathieu
Shared Position Technique for Interfered Random Transmissions in Satellite Communications.
(2018)
In: 9th Advanced Satellite Multimedia Systems Conference (ASMS), 10 September 2018 - 12 September 2018 (Berlin, Germany).
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 946kB |
Official URL: http://doi.org/10.1109/ASMS-SPSC.2018.8510732
Abstract
In this paper we propose a new random access (RA) channel technique for the return link of satellite communications. It concerns slotted transmissions. This proposed method called Shared POsition Technique for Interfered random Transmissions (SPOTiT), is based on a shared knowledge between the receiver and each of the terminals. The shared information is about the time slot locations on which the terminal transmits its replicas as well as the preamble to use. The presented random version of SPOTiT aims to reduce the complexity of replicas localization process of the legacy technique Multireplica Decoding using Correlation based Localisation (MARSALA). It presents a less complex system without degrading performance and with no extra signaling information. Thus, SPOTiT is applied at the same level as MARSALA, i.e. when Contention Resolution Diversity Slotted Aloha (CRDSA) fails in retrieving more packets. This technique combined with CRDSA significantly reduces the number of data localization correlations, while maintaining the same performance as in CRDSA/MARSALA in terms of packet loss ratio and throughput.
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