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Optimal joint MIMO and modulation order selection for network coded multicast wireless communications

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Abstract

The capacity gain provided by multiple-input multiple-output (MIMO) systems and network coding has been mainly investigated on an individual basis in the existing literature. The aim of this paper is to analyze the advantaged arising by a combined use of MIMO systems and network coding schemes for unicast and multicast communications under Rayleigh fading propagation conditions. In particular a suitable optimization methodology is proposed here in order to achieve the best performance in terms of mean overall energy consumption and delivery delay. In particular, the advantages of the proposed approach are highlighted for the cases of balanced and unbalanced multicast scenarios on the basis of the average group metric paradigm in order to maximize the average group satisfaction.

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Notes

  1. This is compliant with the 3GPP long term evolution (LTE) standard.

  2. This means that the channel coefficients do not change during packet duration but change independently from one packet to another.

  3. Optimization process would find infinite transmission power as a trivial solution.

  4. This performance evaluation adopts a BPSK \(4 \times 4\) MRC MIMO communication, with \(B\) = 200 packets.

  5. There is a satisfaction level for every user \(i\) depending on its specific \(\gamma _{0,i}\).

  6. In general \(\alpha _{i}\) values can be derived from service level agreements (SLA) between service provider and single users.

  7. The CSI obtained by transmitter is measured on a single antenna at both transmit and receive sides.

  8. For the sake of readability, it is shown only minimum curves.

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Authors and Affiliations

  1. Department of Information Engineering, University of Florence, Via di S. Marta 3, 50134, Florence, Italy

    Francesco Chiti, Romano Fantacci, Laura Pierucci & Niccoló Privitera

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  1. Francesco Chiti
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  2. Romano Fantacci
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  3. Laura Pierucci
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  4. Niccoló Privitera
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Correspondence to Francesco Chiti.

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Chiti, F., Fantacci, R., Pierucci, L. et al. Optimal joint MIMO and modulation order selection for network coded multicast wireless communications. Telecommun Syst 61, 433–441 (2016). https://doi.org/10.1007/s11235-014-9962-8

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  • DOI: https://doi.org/10.1007/s11235-014-9962-8

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