MAP channel-estimation-based PIC receiver for downlink MC-CDMA systems

dc.contributor.authorDoğan, Hakan
dc.contributor.authorPanayırcı, Erdal
dc.contributor.authorÇırpan, Hakan Ali
dc.contributor.authorFleury, Bernard Henri
dc.date.accessioned2019-06-27T08:06:15Z
dc.date.available2019-06-27T08:06:15Z
dc.date.issued2008
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractWe propose a joint MAP channel estimation and data detection technique based on the expectation maximization (EM) method with paralel interference cancelation (PIC) for downlink multicarrier (MC) code division multiple access (CDMA) systems in the presence of frequency selective channels. The quality of multiple access interference (MAI) which can be improved by using channel estimation and data estimation of all active users affects considerably the performance of PIC detector. Therefore data and channel estimation performance obtained in the initial stage has a significant relationship with the performance of PIC. So obviously it is necessary to make excellent joint data and channel estimation for initialization of PIC detector. The EM algorithm derived estimates the complex channel parameters of each subcarrier iteratively and generates the soft information representing the data a posterior probabilities. The soft information is then employed in a PIC module to detect the symbols efficiently. Moreover the MAP-EM approach considers the channel variations as random processes and applies the Karhunen-Loeve (KL) orthogonal series expansion. The performance of the proposed approach is studied in terms of bit-error rate (BER) and mean square error (MSE). Throughout the simulations extensive comparisons with previous works in literature are performed showing that the new scheme can offer superior performance.en_US]
dc.identifier.citation5
dc.identifier.doi10.1155/2008/570624en_US
dc.identifier.issn1687-1499en_US
dc.identifier.issn1687-1499
dc.identifier.scopus2-s2.0-41249101528en_US
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://hdl.handle.net/20.500.12469/1174
dc.identifier.urihttps://doi.org/10.1155/2008/570624
dc.identifier.wosWOS:000254340800001en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPanayırcı, Erdalen_US
dc.language.isoenen_US
dc.publisherHindawi Publishing Corporationen_US
dc.relation.journalEURASIP Journal On Wireless Communications and Networkingen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.titleMAP channel-estimation-based PIC receiver for downlink MC-CDMA systemsen_US
dc.typeArticleen_US
dspace.entity.typePublication

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