Energy-efficient improper signaling for K-user interference channels

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URI: http://hdl.handle.net/10902/18036
ISBN: 978-9-0827-9703-9
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Autoría
Soleymani, Mohammad; Lameiro Gutiérrez, ChristianAutoridad Unican; Santamaría Caballero, Luis IgnacioAutoridad Unican; Schreier, Peter J.
Fecha
2019
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© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publicado en
27th European Signal Processing Conference (EUSIPCO), A Coruña, 2019, 1-5.
Editorial
Institute of Electrical and Electronics Engineers Inc.
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Palabras clave
Energy efficiency
Improper Gaussian signaling
Interference channels
Multiuser
Resumen/Abstract
This paper investigates the energy efficiency (EE) of improper Gaussian signaling (IGS) in a K-user interference channel (IC). IGS allows unequal variances and/or correlation between the real and imaginary parts, and it has recently been shown to be advantageous in various interference-limited scenarios. In this paper, we propose an energy-efficient IGS design for the K-user IC, which is based on a separate optimization of the powers and complementary variances of the users. We compare the EE region achieved by the proposed scheme with that achieved by conventional proper signaling and show that IGS can significantly improve the EE region.
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