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ThinkMind // International Journal On Advances in Networks and Services, volume 9, numbers 1 and 2, 2016 // View article netser_v9_n12_2016_1

Practical Design of Network Coded Multicast over Satellite

Authors:
Paresh Saxena
Maria Angeles Vazquez-Castro

Keywords: Network coding; Multicast; Satellite communication; Achievable rates

Abstract:
In this paper, we present the practical design of systematic random network coding (SNC) for multicast over satellite. In particular, the satellite coverage is over a large geographical area that consists of several users. These users may face different channel conditions and undergo different packet loss rates. In this work, we show two regions of transmission. First, the general multicast region where all users subscribed to the multicast channel can recover all the data packets and second, we identify the multi-unicast region where only users with good channel conditions can recover all the data packets but those with bad channel accept transmission losses. Further, we present the architectural and encapsulation feasibility of SNC at satellite-dependent and satellite-independent layers. We derive theoretically and by simulation the benefits of SNC against state-of-the-art end-to-end coding at these layers. Our results show that: (i) SNC at link layer can achieve up to 26.90% and 24.26% higher maximum achievable rates for multicast and multi-unicast, respectively and (ii) SNC at application layer requires up to 6.66% and 30.02% smaller available network bandwidth for multicast and multi-unicast respectively.

Pages: 1 to 10

Copyright: Copyright (c) to authors, 2016. Used with permission.

Publication date: June 30, 2016

Published in: journal

ISSN: 1942-2644
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