Wiener feedback filtering for suppression of residual ISI and correlated noise in MC-CDMA

Haibing Yang, J.P.M.G. Linnartz

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

Multi-carrier CDMA takes advantage of frequency diversity by spreading each user symbol across multiple sub-carriers to improve the transmission performance. However, the performance of linear detection schemes is affected by the residual inter-symbol interference (ISI) and the correlated noise present in decision variables. In order to improve the performance, a decision feedback equalization (DFE) scheme is proposed in this paper. In the feedback stage, an optimal Wiener filter is designed to predict and suppress the residual ISI and the correlated noise caused by the channel equalization and code despreading in the feedforward stage. Simulations show that the proposed DFE scheme significantly outperforms the conventional linear minimum mean-square error (MMSE) receiver. By this scheme, a noise penalty between MC-CDMA and ideally coded OFDM is largely reduced.
Original languageEnglish
Title of host publicationProceedings of the 14th Annual Symposium on Communications and Vehicular Technology in the Benelux (IEEE SCVT 2007), 15 November 2007, Delft, The Nederlands
Place of PublicationDelft, The Netherlands
PublisherInstitute of Electrical and Electronics Engineers
Pages1-5
DOIs
Publication statusPublished - 2007
Event14th IEEE Symposium on Communications and Vehicular Technology in the Benelux (IEEE SCVT 2007) - Delft, Netherlands
Duration: 15 Nov 200715 Nov 2007
Conference number: 14

Conference

Conference14th IEEE Symposium on Communications and Vehicular Technology in the Benelux (IEEE SCVT 2007)
Abbreviated titleIEEE SCVT 2007
CountryNetherlands
CityDelft
Period15/11/0715/11/07

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