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Titolo:
Slow frequency-hopping multicarrier DS-CDMA for transmission over Nakagamimultipath fading channels
Autore:
Yang, LL; Hanzo, L;
Indirizzi:
Univ Southampton, Dept Elect & Comp Sci, Southampton SO17 1BJ, Hants, England Univ Southampton Southampton Hants England SO17 1BJ 7 1BJ, Hants, England
Titolo Testata:
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
fascicolo: 7, volume: 19, anno: 2001,
pagine: 1211 - 1221
SICI:
0733-8716(200107)19:7<1211:SFMDFT>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACCESS COMMUNICATIONS; ARBITRARY PARAMETERS; PERFORMANCE ANALYSIS; SYSTEMS; DIVERSITY; SIGNALS;
Keywords:
code division multiple access; constant-weight code; frequency hopping; Nakagami fading; orthogonal frequency division multiplexing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Yang, LL Univ Southampton, Dept Elect & Comp Sci, Southampton SO17 1BJ, Hants, England Univ Southampton Southampton Hants England SO17 1BJ nts, England
Citazione:
L.L. Yang e L. Hanzo, "Slow frequency-hopping multicarrier DS-CDMA for transmission over Nakagamimultipath fading channels", IEEE J SEL, 19(7), 2001, pp. 1211-1221

Abstract

A novel multiple access scheme based on slow frequency hopping multicarrier direct-sequence code division multiple access (SFH/MC DS-CDMA) is proposed and investigated, which can be rendered compatible with the existing second-generation narrowband CDMA and third-generation wideband CDMA systems. The frequency hopping patterns are controlled by a set of constant-weight codes. Consequently, multirate communications can be implemented by selectingthe corresponding sets of constant-weight codes having the required weights controlling the SFH patterns invoked. Two FH schemes, namely random and uniform FH, are considered and their advantages as well as disadvantages areinvestigated. We assume that the system operates in a multipath fading environment and a RAKE receiver structure with maximum ratio combining (MRC) is used for demodulation. The system's performance is evaluated over the range of multipath Nakagami fading channels, under the assumption that the receiver has an explicit knowledge of the associated frequency-hopping (FH) patterns invoked. Furthermore, the performance of the SFH/MC DS-CDMA system is compared to that of the conventional single-carrier (SC) DS-CDMA system and that of the conventional MC DS-CDMA system, under the assumptions of constant system bandwidth and of constant transmitted signal power.

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Documento generato il 29/03/20 alle ore 08:40:33