Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/8295
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ribeiro, C. | pt |
dc.contributor.author | Gameiro, A. | pt |
dc.date.accessioned | 2012-04-23T17:53:38Z | - |
dc.date.available | 2012-04-23T17:53:38Z | - |
dc.date.issued | 2007 | - |
dc.identifier.isbn | 978-1-4244-0979-2 | - |
dc.identifier.uri | http://hdl.handle.net/10773/8295 | - |
dc.description.abstract | In this paper we investigate the impact of the pilot density (and associated pilot distances for both frequency and time domains) in the performance of the channel estimation for MC-CDMA systems, when using dedicated sub-carriers to transmit pilots with 2-D rectangular patterns. The analytical formulation of the channel estimation MSE for the single-user downlink scenario with a generic channel estimation scheme for a given power efficiency is presented. The attained results go beyond the commonly accepted rule of thumb that suggests that an oversampling factor of two will result in a good trade-off between performance and pilot overhead. The analytical formulation was validated by system simulations. A scenario using the 2-D LS-DFT channel estimation scheme confirmed the analytical result. The lowest channel estimation MSE for a given value of power efficiency is achieved when the pilot density is the one that closely fulfils the 2-D sampling theorem. | pt |
dc.language.iso | eng | pt |
dc.publisher | IEEE | pt |
dc.relation | CELTIC project “WISQUAS” (CP2-035) | pt |
dc.rights | openAccess | por |
dc.title | On the impact of the pilot density in the channel estimation of MC-CDMA systems | pt |
dc.type | conferenceObject | pt |
dc.peerreviewed | yes | pt |
ua.publicationstatus | published | pt |
ua.event.date | 17-19 Outubro, 2007 | pt |
ua.event.type | conference | pt |
degois.publication.firstPage | 777 | pt |
degois.publication.lastPage | 781 | pt |
degois.publication.title | ISWCS 2007: 4th IEEE International Symposium on Wireless Communication Systems | - |
dc.relation.publisherversion | http://www.scopus.com/inward/record.url?eid=2-s2.0-46449124484&partnerID=40&md5=9a6e23714df9734cc33bff1b95900438 | pt |
dc.identifier.doi | 10.1109/ISWCS.2007.4392446 | pt |
Appears in Collections: | DETI - Comunicações |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
ISWCS_final_camera_ready_CRibeiro_6.pdf | 275.81 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.