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Título:
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Performance of waterfilling-based schemes for interference cancellation in 4G networks
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Autor/a:
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Pablo González, Mari Luz; García Armada, Ana; Sánchez Fernández, Matilde; Pascual Iserte, Antonio; Payaró Llisterri, Miquel
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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. A&MP - Grup de Processament d'Arrays i Sistemes Multicanal |
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Abstract:
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In this work we consider the optimization of the power assigned to the user streams in a coordinated base station downlink environment with Orthogonal Frequency Division Modulation (OFDM). In this scenario the base stations perform distributed cooperative processing with a block diagonalization scheme to remove interference among users. Two schemes based on the waterfilling technique are proposed and compared to the optimal solution, which can be obtained numerically, by using convex optimization. We show that the proposed schemes achieve a performance, in terms of weighted sum rate, very close to the optimal, without the heavy computational complexity required by the numerical solution. These sum rates are compared in a simplified scenario consisting of two-user and two-cell. Other more realistic multicell scenario and some examples of achievable rates are presented too. |
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Abstract:
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Peer Reviewed |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils
-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
-Mobile communication systems
-Signal theory (Telecommunication)
-4G networks
-Block diagonalization
-Interference cancellation
-Multi-cell scenarios
-Numerical solution
-Optimal solutions
-Sum-rate
-Waterfilling
-Weighted sum-rate
-Comunicacions mòbils, Sistemes de
-Senyal, Teoria del (Telecomunicació) |
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Derechos:
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Tipo de documento:
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Artículo - Versión publicada
Objeto de conferencia |
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Editor:
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Institute of Electrical and Electronics Engineers (IEEE)
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Compartir:
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