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Probabilistic algorithms for blind adaptive multiuser detection
dc.contributor.author | Antón Haro, Carles |
dc.contributor.author | Rodríguez Fonollosa, José Adrián |
dc.contributor.author | Zvonar, Zoran |
dc.contributor.author | Rodríguez Fonollosa, Javier |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2008-02-04T15:43:05Z |
dc.date.available | 2008-02-04T15:43:05Z |
dc.date.created | 1996-08-28 |
dc.date.issued | 1998-11-30 |
dc.identifier.citation | Antón Haro, C.; Rodríguez Fonollosa, J. A.; Zvonar, Z.; Rodríguez Fonollosa, J. Probabilistic algorithms for blind adaptive multiuser detection. IEEE Transactions on Signal Processing, 1998, vol. 46, núm. 11, p. 2953-2966. |
dc.identifier.issn | 1053-587X |
dc.identifier.uri | http://hdl.handle.net/2117/1564 |
dc.description.abstract | In this paper, two probabilistic adaptive algorithms for jointly detecting active users in a DS-CDMA system are reported. The first one, which is based on the theory of hidden Markov models (HMM’s) and the Baum–Wech (BW) algorithm, is proposed within the CDMA scenario and compared with the second one, which is a previously developed Viterbi-based algorithm. Both techniques are completely blind in the sense that no knowledge of the signatures, channel state information, or training sequences is required for any user. Once convergence has been achieved, an estimate of the signature of each user convolved with its physical channel response (CR) and estimated data sequences are provided. This CR estimate can be used to switch to any decision-directed (DD) adaptation scheme. Performance of the algorithms is verified via simulations as well as on experimental data obtained in an underwater acoustics (UWA) environment. In both cases, performance is found to be highly satisfactory, showing the near–far resistance of the analyzed algorithms. |
dc.format.extent | 2953-2966 |
dc.language.iso | eng |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal |
dc.subject.lcsh | Underwater acoustics |
dc.subject.lcsh | Signal processing |
dc.subject.other | Acoustic signal detection |
dc.subject.other | Adaptive signal detection |
dc.subject.other | Code division multiple access |
dc.subject.other | Convolution |
dc.subject.other | Pseudonoise codes |
dc.subject.other | Spread spectrum communication |
dc.subject.other | Telecommunication channels |
dc.subject.other | Underwater acoustics |
dc.subject.other | Viterbi detection |
dc.subject.other | Viterbi-based algorithm |
dc.subject.other | DS-CDMA system |
dc.subject.other | HMM |
dc.subject.other | Baum-Welch algorithm |
dc.subject.other | User signature estimation |
dc.subject.other | Estimated data sequences |
dc.subject.other | Decision-directed adaptation scheme |
dc.subject.other | Experimental data |
dc.subject.other | Near-far resistance |
dc.title | Probabilistic algorithms for blind adaptive multiuser detection |
dc.type | Article |
dc.subject.lemac | Acústica submarina |
dc.subject.lemac | Processament del senyal |
dc.contributor.group | Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 1641955 |
dc.relation.projectidctt | TIC98-0703 |
dc.relation.projectidctt | TIC98-0412 |
dc.relation.projectidctt | TIC96-0500-C10-01 |
dc.relation.projectidctt | 1996SGR-00096 |
local.personalitzacitacio | true |
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