| A New Multiuser Detector for Synchronous DS/CDMA System |
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| 作者姓名： | Liu Zongchun and Feng Guangzeng |
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| 作者单位： | Nanjing University of Posts and Telecommunications Nanjing，210003，P R. China |
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| 摘 要： | 1IntroductionInaCode-DivisionMultiple-Access(CDMA)system,severalindependentusersaccesssimulboeouslyacommonchannelbymodulatingpreassignedsignatUrewaveforms.Inthemobileradiochannels,MultipleAccessinterference(MAI)arises.Therefore,muchattelltionhasbeend...
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A New Multiuser Detector for Synchronous DS/CDMA System |
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| Liu Zongchun and Feng Guangzeng.A New Multiuser Detector for Synchronous DS/CDMA System[J].The Journal of China Universities of Posts and Telecommunications,1999,6(1):2. |
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| Authors: | Liu Zongchun Feng Guangzeng |
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| Abstract: | Several multiuser detectors for Code-Division Multiple-Access(CDMA) system have be'n studied recently. In this paper we propose the orthogonal decision-feedback detector. It combines the decorrelating decisionfeedback detector with the orthogonal detector, and has the merit of good performance of the decorrelating decisionfeedback detector and simple structure of the orthogonal detector The performance of the new multiuser detector is close to the decorrelating decision-feedback detector but its construction is simpler. Because of the similarities betWeen the multiuser detection problem and the decoding of the convolutional code, a tree search algorithm is taken on the detector which makes its performance improved. and approaches the single user bound. |
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| Keywords: | CDMA multi-user detector decision-feedback detector |
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