Title:
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Transmit beamforming for the MISO Interference Channel with asymmetric link gains
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Author:
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Vázquez, Miguel Ángel; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A.
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Other authors:
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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 |
Abstract:
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This paper proposes a transmit beamforming technique to
cope with the problem of the Multiple Input Single Out-
put Interference Channel (MISO IC). In this scenario, the
achievable sum-rate is highly conditioned by the inter-user
interference. Furthermore, optimizing the sum-rate is known
to be a cumbersome problem. In order to deal with this prob-
lem, we approximate the sum-rate when the desired received
signal power level is higher than the multiuser interference
power level (i.e. when the Signal-to-Interference Ratio (SIR)
is high). For that case, the sum-rate expression can be opti-
mized distributively and it leads to a transmit beamformer that
outperforms the existing decentralized techniques when the
channel gains are asymmetric. Numerical simulations show
the performance of the proposed technique which improves
the existing decentralized designs for the MISO IC. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils -Wireless communication systems -Comunicació sense fil, Sistemes de |
Rights:
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Document type:
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Article - Published version Conference Object |
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