Abstract

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Effective capacity (EC) determines the maximum communication rate subject to a particular delay constraint. In this work, we analyze the EC of ultra reliable Machine Type Communication (MTC) networks operating in the finite blocklength (FB) regime. First, we present a closed form approximation for EC in quasi-static Rayleigh fading channels. Our analysis determines the upper bounds for EC and delay constraint when varying transmission power. Finally, we characterize the power-delay trade-off for fixed EC and propose an optimum power allocation scheme which exploits the asymptotic behavior of EC in the high SNR regime. The results illustrate that the proposed scheme provides significant power saving with a negligible loss in EC.

Authors:
Shehab Mohammad, Alves Hirley, Latva-aho Matti

Publication type:
A1 Journal article – refereed

Place of publication:

Keywords:
Effective capacity, finite blocklength, optimal power allocation, Ultra-reliable communication

Published:
20 February 2019

Full citation:
M. Shehab, H. Alves and M. Latva-aho, “Effective Capacity and Power Allocation for Machine-Type Communication,” in IEEE Transactions on Vehicular Technology. doi: 10.1109/TVT.2019.2900580

DOI:
https://doi.org/10.1109/TVT.2019.2900580

Read the publication here:
http://urn.fi/urn:nbn:fi-fe2019041612531