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Titolo:
An efficient multiuser detector with low decision delay for multiple chip rate DS/CDMA mobile radio systems
Autore:
Lee, JH; Kim, HM;
Indirizzi:
Korea Adv Inst Sci & Technol, Dept Elect Engn & Comp Sci, Div Elect Engn, Commun Signal Proc Lab,Yusong Gu, Taejon 305701, South Korea Korea Adv InstSci & Technol Taejon South Korea 305701 5701, South Korea
Titolo Testata:
SIGNAL PROCESSING
fascicolo: 12, volume: 81, anno: 2001,
pagine: 2523 - 2534
SICI:
0165-1684(200112)81:12<2523:AEMDWL>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACCESS COMMUNICATION-SYSTEMS; CDMA COMMUNICATIONS; CHANNELS; PERFORMANCE; SEQUENCES; RECEIVERS;
Keywords:
low delay multiuser detector; decision-feedback; multiple data rate DS/CDMA; multiple chip rate; mobile radio channels; multipath fading;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, HM Korea Adv Inst Sci & Technol, Dept Elect Engn & Comp Sci, Div Elect Engn, Commun Signal Proc Lab,Yusong Gu, 373-1 Kusong Dong, Taejon 305701,South Korea Korea Adv Inst Sci & Technol 373-1 Kusong Dong Taejon South Korea 305701
Citazione:
J.H. Lee e H.M. Kim, "An efficient multiuser detector with low decision delay for multiple chip rate DS/CDMA mobile radio systems", SIGNAL PROC, 81(12), 2001, pp. 2523-2534

Abstract

In this paper, an efficient multiuser detection scheme with low decision delay is presented for asynchronous multiple chip rate (MCR) DS/CDMA systemsin mobile radio channels without any restrictions on processing gains and chip rates. An equivalent synchronous single bit rate DS/CDMA system is first formulated to break up the detection problem into the blocks of finite length called processing windows. Then, a low delay multipath-combining decision-feedback multiuser detector (LDMCDF) is proposed based on the equivalent system model. Since the LDMCDF makes the decisions for data bits in every processing window, the decision delay is less than the interval of one processing window. The effect of the processing window length on the performance of the LDMCDF is evaluated, and the simulation results show that the LDMCDF provides good performance with the negligible decision delay. (C) 2001Elsevier Science B.V. All rights reserved.

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Documento generato il 29/03/20 alle ore 07:53:08