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Analysis of network coded HARQ for multiple unicast flows

Publication ,  Journal Article
Larsson, P; Smida, B; Koike-Akino, T; Tarokh, V
Published in: IEEE Transactions on Communications
January 14, 2013
Published version (DOI)

In this paper, we consider network coded (NCed) Hybrid-ARQ (HARQ) for multiple unicast flows. The main contribution of the paper is the derivation of throughput expressions for NCed HARQ with arbitrary number of users in identical i.i.d. channels amid packets for all users. We apply the result to Rayleigh fading channels and two packet combining schemes: incremental redundancy (IR) and chase combining (CC). We verify the analytical results with simulations and observe substantial SNR improvements over NCed ARQ and HARQ. The SNR gains in the moderate/high and low throughput regimes are mainly due to network coding and packet combining, respectively. For low/moderate SNRs, NCed HARQ with IR surpasses the CC performance. In addition, we introduce a novel re-transmission strategy that makes the network coding more efficient at low SNR. © 1972-2012 IEEE.

Duke Scholars

Vahid Tarokh
Author Vahid Tarokh Electrical and Computer Engineering

Published In

IEEE Transactions on Communications

DOI

10.1109/TCOMM.2012.121112.110202

ISSN

0090-6778

Publication Date

January 14, 2013

Volume

61

Issue

2

Start / End Page

722 / 732

Related Subject Headings

  • 4606 Distributed computing and systems software
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0804 Data Format
 

Citation

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MLA
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Larsson, P., Smida, B., Koike-Akino, T., & Tarokh, V. (2013). Analysis of network coded HARQ for multiple unicast flows. IEEE Transactions on Communications, 61(2), 722–732. https://doi.org/10.1109/TCOMM.2012.121112.110202
Larsson, P., B. Smida, T. Koike-Akino, and V. Tarokh. “Analysis of network coded HARQ for multiple unicast flows.” IEEE Transactions on Communications 61, no. 2 (January 14, 2013): 722–32. https://doi.org/10.1109/TCOMM.2012.121112.110202.
Larsson P, Smida B, Koike-Akino T, Tarokh V. Analysis of network coded HARQ for multiple unicast flows. IEEE Transactions on Communications. 2013 Jan 14;61(2):722–32.
Larsson, P., et al. “Analysis of network coded HARQ for multiple unicast flows.” IEEE Transactions on Communications, vol. 61, no. 2, Jan. 2013, pp. 722–32. Scopus, doi:10.1109/TCOMM.2012.121112.110202.
Larsson P, Smida B, Koike-Akino T, Tarokh V. Analysis of network coded HARQ for multiple unicast flows. IEEE Transactions on Communications. 2013 Jan 14;61(2):722–732.

Published In

IEEE Transactions on Communications

DOI

10.1109/TCOMM.2012.121112.110202

ISSN

0090-6778

Publication Date

January 14, 2013

Volume

61

Issue

2

Start / End Page

722 / 732

Related Subject Headings

  • 4606 Distributed computing and systems software
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0804 Data Format