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Titolo:
PERFORMANCE ANALYSIS OF A DS CDMA SYSTEM WITH NONCOHERENT M-ARY ORTHOGONAL MODULATION IN NAKAGAMI FADING/
Autore:
AALO V; UGWEJE O; SUDHAKAR R;
Indirizzi:
FLORIDA ATLANTIC UNIV,DEPT ELECT ENGN BOCA RATON FL 33431 UNIV AKRON,DEPT ELECT ENGN AKRON OH 44325
Titolo Testata:
IEEE transactions on vehicular technology
fascicolo: 1, volume: 47, anno: 1998,
pagine: 20 - 29
SICI:
0018-9545(1998)47:1<20:PAOADC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
CDMA SYSTEM; CHANNELS;
Keywords:
CORRELATED NAKAGAMI FADING; DS-CDMA SYSTEM; M-ARY NONCOHERENT ORTHOGONAL MODULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
V. Aalo et al., "PERFORMANCE ANALYSIS OF A DS CDMA SYSTEM WITH NONCOHERENT M-ARY ORTHOGONAL MODULATION IN NAKAGAMI FADING/", IEEE transactions on vehicular technology, 47(1), 1998, pp. 20-29

Abstract

The probability of error performance of a direct-sequence code-division multiple-access (DS/CDMA) system employing noncoherent M-ary orthogonal signaling in a Nakagami multipath fading channel is analyzed. A RAKE receiver structure with square-law demodulation is used at the receiver, The multiple-access interferences are modeled as Gaussian and expressions derived for the exact probability of error, The performanceis also evaluated in terms of the number of users that can be supported by the system at a given probability of error. The effect of correlated fading on system performance is also investigated by considering two correlation models, which can be characterized by a single correlation coefficient p. In the first model, the correlation coefficient between any two diversity branches is constant, In the second model, it is assumed that the correlation coefficient between any two diversity branches decreases exponentially as the separation between them increases. For both models, it is found that the presence of correlation deteriorates system performance. The use of larger signal alphabets than binary modulation in conjunction with diversity reception provides a considerable performance improvement even in the presence of correlatedfading.

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Documento generato il 03/07/20 alle ore 14:34:33