{"title":"Joint despreading and iterative decoding in DS-CDMA system with serially concatenated turbo code and Walsh code","authors":"A. Risteski, P. Popovski, B. Spasenovski","doi":"10.1109/ICPWC.2000.905841","DOIUrl":null,"url":null,"abstract":"A DS-CDMA system with integrated ECC (error control coding) technique is presented. The encoder is a serial concatenation of a turbo code and a Walsh orthogonal code. An iterative algorithm for MAP decoding is implemented in the receiver. Decoding and despreading are unified through a joint iterative process in terms of exchanging soft information among receiver components. Compared to similar DS-CDMA systems, in the region of signal-to-noise ratios of interest, the proposed system shows excellent performance even at low input block size. This approach suggests a convenient scheme that can be used to implement FEC (forward error correction) in a personal communication system, for applications intolerable to delay.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICPWC.2000.905841","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
A DS-CDMA system with integrated ECC (error control coding) technique is presented. The encoder is a serial concatenation of a turbo code and a Walsh orthogonal code. An iterative algorithm for MAP decoding is implemented in the receiver. Decoding and despreading are unified through a joint iterative process in terms of exchanging soft information among receiver components. Compared to similar DS-CDMA systems, in the region of signal-to-noise ratios of interest, the proposed system shows excellent performance even at low input block size. This approach suggests a convenient scheme that can be used to implement FEC (forward error correction) in a personal communication system, for applications intolerable to delay.
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