Título:
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On the superiority of improper Gaussian signaling in wireless interference MIMO scenarios
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Autor/a:
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Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
Abstract:
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Abstract:
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Recent results have elucidated the benefits of using improper Gaussian signaling (IGS) as compared to conventional proper Gaussian signaling (PGS) in terms of achievable rate for interference-limited conditions. This paper exploits majorization
theory tools to formally quantify the gains of IGS along with widely linear transceivers for MIMO systems in interferencelimited scenarios. The MIMO point-to-point channel with interference (P2P-I) is analyzed, assuming that received interference can be either proper or improper, and we demonstrate that the
use of the optimal IGS when received interference is improper strictly outperforms (in terms of achievable rate and mean square error) the use of the optimal PGS when interference is proper.
Then, these results are extended to two practical situations. First, the MIMO Z-interference channel (Z-IC) is investigated, where a trade-off arises: with IGS we could increase the achievable rate of the interfered user while gracefully degrading the rate of the non-interfered user. Second, these concepts are applied to a
two-tier heterogeneous cellular network (HCN) where macrocells and smallcells coexist and multiple MIMO Z-IC appear. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica -MIMO systems -Gaussian processes -Mobile communication systems -Improper Gaussian signaling -Widely linear processing -Majorization theory -MIMO point-to-point channel with interference -MIMO Z-interference channel -Heterogeneous
cellular networks -Sistemes MIMO -Processos gaussians -Comunicacions mòbils, Sistemes de |
Derechos:
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Tipo de documento:
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Artículo - Versión presentada Artículo |
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