{"title":"Multi-carrier modulation schemes for frequency-selective fading channels","authors":"G. Wetzker, M. Dukek, H. Ernst, F. Jondral","doi":"10.1109/ICUPC.1998.733647","DOIUrl":null,"url":null,"abstract":"The performance of orthogonal frequency division multiplexing (OFDM) modulation schemes using differential (DPSK-OFDM), coherent (PSK-OFDM) data modulation and multi-carrier code division multiple access (MC-CDMA) are compared for time-variant and time-invariant multipath channels. Ignoring the CDMA aspect, MC-CDMA can be viewed as a novel modulation technique. While coherent OFDM and MC-CDMA require channel equalization, differential OFDM can work without it. As a channel equalization method a new controlled equalization scheme is introduced and investigated by simulations. MC-CDMA with controlled equalization is shown to be the most suited multi-carrier modulation principle over time-variant and time-invariant frequency-selective channels.","PeriodicalId":341069,"journal":{"name":"ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1998-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICUPC.1998.733647","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
The performance of orthogonal frequency division multiplexing (OFDM) modulation schemes using differential (DPSK-OFDM), coherent (PSK-OFDM) data modulation and multi-carrier code division multiple access (MC-CDMA) are compared for time-variant and time-invariant multipath channels. Ignoring the CDMA aspect, MC-CDMA can be viewed as a novel modulation technique. While coherent OFDM and MC-CDMA require channel equalization, differential OFDM can work without it. As a channel equalization method a new controlled equalization scheme is introduced and investigated by simulations. MC-CDMA with controlled equalization is shown to be the most suited multi-carrier modulation principle over time-variant and time-invariant frequency-selective channels.
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