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Titolo:
Macrodiversity power control in hierarchical CDMA cellular systems
Autore:
Kim, JY; Stuber, GL; Akyildiz, IF;
Indirizzi:
Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA GeorgiaInst Technol Atlanta GA USA 30332 omp Engn, Atlanta, GA 30332 USA
Titolo Testata:
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
fascicolo: 2, volume: 19, anno: 2001,
pagine: 266 - 276
SICI:
0733-8716(200102)19:2<266:MPCIHC>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
RADIO SYSTEMS; NETWORKS;
Keywords:
hierarchical cellular architectures; macrodiversity; maximal ratio combining; power control; selective transmit diversity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, JY Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USAGeorgia Inst Technol Atlanta GA USA 30332 , Atlanta, GA 30332 USA
Citazione:
J.Y. Kim et al., "Macrodiversity power control in hierarchical CDMA cellular systems", IEEE J SEL, 19(2), 2001, pp. 266-276

Abstract

Hierarchical code division multiple access (CDMA) cellular systems, consisting of macrocells with underlying microcells, are studied. We seek power control schemes which will allow both hierarchical layers to share the same spectrum. For the reverse link, hierarchical maximal ratio combining (HMRC)is applied where each mobile station (MS) is received and coherently combined by base stations (BSs) in both layers. For the forward link, selective transmit diversity (STD) is applied where each BS provides multiple transmit paths for MSs to choose, We show that both HMRC and STD are effective in hierarchical CDMA architectures. We conclude that hierarchical architectures are a viable solution for improving CDMA cellular system capacity, and a significant performance gain can be achieved without assigning disjoint spectrum between the layers, by utilizing macrodiversity schemes such as HMRC and STD.

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Documento generato il 06/04/20 alle ore 01:13:07