@conference{10902/18508,
year = {2019},
url = {http://hdl.handle.net/10902/18508},
abstract = {This paper considers improper Gaussian signaling (IGS) in an overlay cognitive radio scenario. We follow a protocol in which the secondary user (SU) uses part of its power to relay the message for the primary user (PU) and consider a simple yet illustrative 2-user scenario. We analyze two communication schemes depending on whether or not the PU cooperates with the SU and derive closed-form expressions for the optimal transmission parameters that maximize the SU rate while ensuring a specified minimum performance of the PU. Our numerical results show that IGS may significantly outperform proper signaling and that, interestingly, the cooperative approach provides negligible performance gains over its non-cooperative counterpart.},
organization = {The work of C. Lameiro and P. J. Schreier was supported by the German Research Foundation (DFG) under grants SCHR 1384/6-1 and LA 4107/1-1. The work of I. Santamaría was supported by the Ministerio de Economía y Competitividad (MINECO) and AEI/FEDER funds of the UE, Spain, under project CARMEN (TEC2016-75067-C4-4-R).},
publisher = {Institute of Electrical and Electronics Engineers Inc.},
publisher = {IEEE Global Communications Conference (GLOBECOM), Waikoloa, HI, USA, 2019},
title = {Benefits of improper signaling for overlay cognitive radio},
author = {Lameiro Gutiérrez, Christian and Santamaría Caballero, Luis Ignacio and Schreier, Peter J.},
}