Title:
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Evolution of spatial and multicarrier scheduling: towards multi-cell scenario
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Author:
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Henarejos Hernández, Pol; Pérez Neira, Ana Isabel; Tralli, Velio; Moretti, Marco; Dimitriou, Nikos; Dainelli, Giulio
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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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OFDMA systems are considered as the promising multiple
access scheme of next generation multi-cellular wireless systems. In order
to ensure the optimum usage of radio resources, OFDMA radio resource
management algorithms have to maximize the allocated power and rate
of the di erent subchannels to the users taking also into account the gen-
erated co-channel interference between neighboring cells, which a ects
the received Quality of Service. This paper discusses various schemes for
power distribution schemes in multiple co-channel cells. These schemes
include centralized and distributed solutions, which may involve various
degrees of complexity and related overhead and may employ procedures
such as linear programming. Finally, the paper introduces a new solu-
tion that uses a network
ow model to solve the maximization of the
multi-cell system sum rate. The application of spatial beamforming at
each cell is suggested in order to better cope with interference. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació -Signal theory (Telecommunication) -Quality of Service -Senyal, Teoria del (Telecomunicació) |
Rights:
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Document type:
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Article - Published version Conference Object |
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