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Abstract
This paper shows the potential and key enabling mechanisms for tunable sparse network coding, a scheme in which the density of network coded packets varies during a transmission session. At the beginning of a transmission session, sparsely coded packets are transmitted, which benefits decoding complexity. At the end of a transmission, when receivers have accumulated degrees of freedom, coding density is increased. We propose a family of tunable sparse network codes (TSNCs) for multicast erasure networks with a controllable trade-off between completion time performance to decoding complexity. Coding density tuning can be performed by designing time-dependent coding matrices. In multicast networks, this tuning can be performed within the network by designing time-dependent pre- coding and network coding matrices with mild conditions on the network structure for specific densities. We present a mechanism to perform efficient Gaussian elimination over sparse matrices going beyond belief propagation but maintaining low decoding complexity. Supporting simulation results are provided showing the trade-off between decoding complexity and completion time.
Original language | English |
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Title of host publication | Network Coding (NetCod), 2014 International Symposium on |
Number of pages | 6 |
Publisher | IEEE |
Publication date | 2014 |
Pages | 1-6 |
ISBN (Print) | 978-1-4799-6217-4 |
DOIs | |
Publication status | Published - 2014 |
Event | 2014 International Symposium on Network Coding - Aalborg University , Aalborg Oest, Denmark Duration: 27 Jun 2014 → 28 Jun 2014 Conference number: 31948 |
Conference
Conference | 2014 International Symposium on Network Coding |
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Number | 31948 |
Location | Aalborg University |
Country/Territory | Denmark |
City | Aalborg Oest |
Period | 27/06/2014 → 28/06/2014 |
Series | 2014 International Symposium on Network Coding |
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Fingerprint
Dive into the research topics of 'Tunable Sparse Network Coding for Multicast Networks'. Together they form a unique fingerprint.Projects
- 2 Finished
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TuneSCode: TuneSCode – Tunable Sparse Network Coding for Wireless Networks
Lucani Rötter, D. E. & Sørensen, C. W.
01/09/2013 → 31/08/2016
Project: Research
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