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Titolo:
Decision-feedback blind adaptive multiuser detector for synchronous CDMA system
Autore:
Ping, H; Tjhung, TT; Rasmussen, LK;
Indirizzi:
Natl Univ Singapore, Ctr Wireless Commun, Dept Elect Engn, Singapore 119260, Singapore Natl Univ Singapore Singapore Singapore 119260 ngapore 119260, Singapore Chalmers Univ Technol, Gothenburg, Sweden Chalmers Univ Technol Gothenburg Sweden niv Technol, Gothenburg, Sweden
Titolo Testata:
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
fascicolo: 1, volume: 49, anno: 2000,
pagine: 159 - 166
SICI:
0018-9545(200001)49:1<159:DBAMDF>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
RECEIVER; ALGORITHM;
Keywords:
blind adaptive multiuser detection; decision feedback; symbol error probability; synchronous CDMA system;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Ping, H Natl Univ Singapore, Ctr Wireless Commun, Dept Elect Engn, Singapore 119260, Singapore Natl Univ Singapore Singapore Singapore 119260 119260, Singapore
Citazione:
H. Ping et al., "Decision-feedback blind adaptive multiuser detector for synchronous CDMA system", IEEE VEH T, 49(1), 2000, pp. 159-166

Abstract

In this paper, we develop a blind adaptive multiuser detector for synchronous code-division multiple access (CDMA) with a noise-whitening filter. Thetriangular structure of the noise-whitened model ensures complete resolution of detection ambiguities, To further improve the symbol error probability performance, we introduce decision feedback in our detector similar to the decorrelating decision-feedback detector (DDFD), thus forming the decision-feedback blind adaptive multiuser detector (DFBD), Simulations indicate that the performance of the DFBD is very close to that of the DDFD in additive white Gaussian noise (AWGN) channels, In Rician fading channels, the DFBD can track the slowly varying channels well and has symbol error probability performance approaching that of the DDFD, which requires the knowledge of users' energies. The blind adaptive and decision-feedback blind adaptive multiuser detectors proposed here do not, however, require that knowledge.

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Documento generato il 10/07/20 alle ore 14:20:51