Simultaneous Information and Energy Transmission in the Two-User Gaussian Interference Channel

Nizar Khalfet 1 Samir M. Perlaza 2
2 SOCRATE - Software and Cognitive radio for telecommunications
Inria Grenoble - Rhône-Alpes, CITI - CITI Centre of Innovation in Telecommunications and Integration of services
Abstract : In this paper, the fundamental limits of simultaneous information and energy transmission (SIET) in the two-user Gaussian interference channel (G-IC) with and without perfect channel-output feedback are approximated by two regions in each case, i.e., an achievable region and a converse region. When the energy transmission rate is normalized by the maximum energy rate, the approximation is within a constat gap. In the proof of achievability, the key idea is the use of power-splitting between two signal components: an information-carrying component and a no-information component. The construction of the former is based on random coding arguments, whereas the latter consists in a deterministic sequence known by all transmitters and receivers. The proof of the converse is obtained via cut-set bounds, genie-aided channel models, Fano's inequality and some concentration inequalities considering that channel inputs might have a positive mean. Finally, the energy transmission enhancement due to feedback is quantified and it is shown that feedback can at most double the energy transmission rate at high signal to noise ratios.
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IEEE Journal on Selected Areas in Communications, Institute of Electrical and Electronics Engineers, 2018, pp.1-15. 〈10.1109/jsac.2018.2872365 〉
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Soumis le : mercredi 3 octobre 2018 - 13:54:45
Dernière modification le : samedi 27 octobre 2018 - 01:19:56

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Nizar Khalfet, Samir M. Perlaza. Simultaneous Information and Energy Transmission in the Two-User Gaussian Interference Channel. IEEE Journal on Selected Areas in Communications, Institute of Electrical and Electronics Engineers, 2018, pp.1-15. 〈10.1109/jsac.2018.2872365 〉. 〈hal-01874019v2〉

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