Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/5415
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DC Field | Value | Language |
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dc.contributor.author | Teodoro, Sara | pt |
dc.contributor.author | Silva, Adão | pt |
dc.contributor.author | Gil, João M. | pt |
dc.contributor.author | Gameiro, Atílio | pt |
dc.date.accessioned | 2012-01-25T16:40:57Z | - |
dc.date.issued | 2009 | - |
dc.identifier.isbn | 9781424445219 | - |
dc.identifier.uri | http://hdl.handle.net/10773/5415 | - |
dc.description.abstract | In this paper we evaluate the coded and uncoded performance of a 2-antenna terminal relaying schem, for downlink OFDM based systems, using efficient space-frequency block coding protocols. We consider that the relay and the base station are equipped with 2 antennas and the user terminal has a single antenna. Two types of relay protocols are accounted for: Equalize-and-Forward and Decode-and-Forward. Signals expressions are derived and the bit error rates obtained for a pratical and preeminent scenario, with LTE parameters and using convolutional channel coding. The performance of the proposed relay-assited scheme is evaluated under realistic scenarios, considering typical pedestrian scenarios based on LTE specifications. Results are compared to those of other relay-assisted design approaches that have been recently proposed for the case of 1-antenna relay and the non-cooperative systems. For this comparison, we implement three propagation scenarios, with different SNR transmission conditions among links. Simulation results show that the availability of a bi-antenna array at the relay significantly improves the cooperative system performance, but improvements are highly dependent on the scenarios and relay protocol as well as of the cooperative second-hop quality. | pt |
dc.description.sponsorship | CODIV - FP7-ICT/2007-215477 | pt |
dc.description.sponsorship | AGILE - PTDC/EEA-TEL/71417/2006 | pt |
dc.description.sponsorship | FCT | pt |
dc.language.iso | eng | pt |
dc.publisher | IEEE | pt |
dc.relation | dx.doi.org/10.1109/ISCIT.2009.5341122 | pt |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/215477 | - |
dc.rights | restrictedAccess | por |
dc.subject | Cooperative diversity | pt |
dc.subject | Dedicated-relay | pt |
dc.subject | OFDM | pt |
dc.subject | Space-frequency code | pt |
dc.subject | User-relay | pt |
dc.subject | Virtual MIMO | pt |
dc.subject | Antenna terminals | pt |
dc.subject | Co-operative diversity | pt |
dc.subject | Cooperative systems | pt |
dc.subject | Decode-and-forward | pt |
dc.subject | Design approaches | pt |
dc.subject | Non-cooperative | pt |
dc.subject | OFDM based system | pt |
dc.subject | OFDM systems | pt |
dc.subject | Realistic scenario | pt |
dc.subject | Simulation result | pt |
dc.subject | Single antenna | pt |
dc.subject | Space frequency codes | pt |
dc.subject | Space-frequency block coding | pt |
dc.subject | Transmission conditions | pt |
dc.subject | UNCODED | pt |
dc.subject | User terminals | pt |
dc.subject | Virtual MIMO | pt |
dc.subject | Antenna arrays | pt |
dc.subject | Channel coding | pt |
dc.subject | Information technology | pt |
dc.subject | Mobile telecommunication systems | pt |
dc.subject | Multiplexing | pt |
dc.subject | Orthogonal frequency division multiplexing | pt |
dc.subject | Ad hoc networks | pt |
dc.title | Distributed space-frequency block coding for a 2-antenna relay in downlink OFDM systems | pt |
dc.type | conferenceObject | pt |
dc.peerreviewed | yes | pt |
ua.publicationstatus | published | pt |
ua.event.date | 28-30 setembro, 2009 | pt |
ua.event.type | conference | pt |
degois.publication.firstPage | 853 | pt |
degois.publication.lastPage | 858 | pt |
degois.publication.title | ISCIT 2009: 9th International Symposium on Communications and Information Technology | - |
dc.date.embargo | 10000-01-01 | - |
Appears in Collections: | DETI - Comunicações |
Files in This Item:
File | Description | Size | Format | |
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Sara_ISCIT_2009.pdf | 324.95 kB | Adobe PDF |
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