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Performance and complexity of tunable sparse network coding with gradual growing tuning functions over wireless networks

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  • Pablo Garrido, University of Cantabria
  • ,
  • Chres W. Sørensen, Aalborg Universitet
  • ,
  • Daniel Enrique Lucani Rötter
  • Ramon Agüero, University of Cantabria

Random Linear Network Coding (RLNC) has been shown to be a technique with several benefits, in particular when applied over wireless mesh networks, since it provides robustness against packet losses. On the other hand, Tunable Sparse Network Coding (TSNC) is a promising concept, which leverages a trade-off between computational complexity and goodput. An optimal density tuning function has not been found yet, due to the lack of a closed-form expression that links density, performance and computational cost. In addition, it would be difficult to implement, due to the feedback delay. In this work we propose two novel tuning functions with a lower computational cost, which do not highly increase the overhead in terms of the transmission of linear dependent packets compared with RLNC and previous proposals. Furthermore, we also broaden previous studies of TSNC techniques, by means of an extensive simulation campaign carried out using the ns-3 simulator. This brings the possibility of assessing their performance over more realistic scenarios, e.g considering MAC effects and delays. We exploit this implementation to analyze the impact of the feedback sent by the decoder. The results, compared to RLNC, show a reduction of 3.5 times in the number of operations without jeopardizing the network performance, in terms of goodput, even when we consider the delay effect on the feedback sent by the decoder.

Titel2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016
Antal sider6
Udgivelsesår22 dec. 2016
ISBN (trykt)978-1-5090-3254-9/16
ISBN (Elektronisk)9781509032549
StatusUdgivet - 22 dec. 2016
Eksternt udgivetJa
BegivenhedIEEE 27th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC): 2016 - Valencia Conference Centre, Valencia, Spanien
Varighed: 4 sep. 20168 sep. 2016


KonferenceIEEE 27th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)
LokationValencia Conference Centre

Bibliografisk note

Electronic ISSN: 2166-9589

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