Müller, Christian ; Klein, Anja ; Wegner, Frank ; Kuipers, Martin (2007)
Dynamic Subcarrier, Bit and Power Allocation in OFDMA-Based Relay Networks.
12th International OFDM-Workshop. Hamburg, Germany (29.-30.08.2007)
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
In this paper, the downlink of a cell is con- sidered in an OFDMA-based relay network. In the cell, a base station (BS) and fixed relay stations (RSs) are deployed. Multiple subscriber stations (SS) are located in the cell. A SS is served either by a direct or a two hop connection. In a direct connection, a link between BS and SS exists. In a two hop connection, a link exists between BS and RS and between RS and SS. Using instantaneous channel state information, a method for resource allocation is presented which dynamically allocates subcarriers, bits and power to the existing links. An optimization problem is formulated aiming at the minimization of the power required for the transmissions of the BS and the RSs. The optimization problem is subject to a requested data rate on each link. The constraint is considered that a RS cannot transmit and receive simultaneously in order to avoid strong intercarrier interference. The evaluation of the presented resource allocation method shows that the required power is near to the theoretical minimum value and is lower than the power required by static resource allocation methods in a defined scenario of a relay network.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Müller, Christian ; Klein, Anja ; Wegner, Frank ; Kuipers, Martin |
| Art des Eintrags: | Bibliographie |
| Titel: | Dynamic Subcarrier, Bit and Power Allocation in OFDMA-Based Relay Networks |
| Sprache: | Englisch |
| Publikationsjahr: | August 2007 |
| Verlag: | TU Hamburg-Harburg |
| Buchtitel: | Proceedings of 12th International OFDM-Workshop (InOWo'07) |
| Veranstaltungstitel: | 12th International OFDM-Workshop |
| Veranstaltungsort: | Hamburg, Germany |
| Veranstaltungsdatum: | 29.-30.08.2007 |
| Kurzbeschreibung (Abstract): | In this paper, the downlink of a cell is con- sidered in an OFDMA-based relay network. In the cell, a base station (BS) and fixed relay stations (RSs) are deployed. Multiple subscriber stations (SS) are located in the cell. A SS is served either by a direct or a two hop connection. In a direct connection, a link between BS and SS exists. In a two hop connection, a link exists between BS and RS and between RS and SS. Using instantaneous channel state information, a method for resource allocation is presented which dynamically allocates subcarriers, bits and power to the existing links. An optimization problem is formulated aiming at the minimization of the power required for the transmissions of the BS and the RSs. The optimization problem is subject to a requested data rate on each link. The constraint is considered that a RS cannot transmit and receive simultaneously in order to avoid strong intercarrier interference. The evaluation of the presented resource allocation method shows that the required power is near to the theoretical minimum value and is lower than the power required by static resource allocation methods in a defined scenario of a relay network. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik > Kommunikationstechnik |
| Hinterlegungsdatum: | 14 Jul 2023 12:38 |
| Letzte Änderung: | 14 Jul 2023 12:38 |
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