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Titolo:
Throughput analysis of CDMA systems using multiuser receivers
Autore:
Liu, QC; Yang, EH; Zhang, Z;
Indirizzi:
Univ So Calif, Inst Commun Sci, Dept Elect Engn Syst, Los Angeles, CA 90089 USA Univ So Calif Los Angeles CA USA 90089 gn Syst, Los Angeles, CA 90089 USA Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada Univ Waterloo Waterloo ON Canada N2L 3G1 gn, Waterloo, ON N2L 3G1, Canada
Titolo Testata:
IEEE TRANSACTIONS ON COMMUNICATIONS
fascicolo: 7, volume: 49, anno: 2001,
pagine: 1192 - 1202
SICI:
0090-6778(200107)49:7<1192:TAOCSU>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
MULTIPLE-ACCESS; NETWORKS; CHANNELS;
Keywords:
code-division multiple access; large deviation theory; multichannel CDMA system; multiuser detection; spread slotted Aloha;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Liu, QC Oakland Univ, Dept Elect & Syst Engn, Rochester, MI 48309 USA Oakland Univ Rochester MI USA 48309 Engn, Rochester, MI 48309 USA
Citazione:
Q.C. Liu et al., "Throughput analysis of CDMA systems using multiuser receivers", IEEE COMMUN, 49(7), 2001, pp. 1192-1202

Abstract

Throughput bounds are attained for random channel access multichannel code-division multiple-access (CDMA) systems and spread slotted Aloha systems employing multiuser receivers. It is shown that the normalized throughput ofthese two systems reaches 1.0 exponentially fast in the region r/K < 1, where r is the average number of simultaneous users in each channel in the random channel access multichannel CDMA system and the packet arrival rate inthe spread slotted Aloha system, respectively, and K is the maximum numberof users which the multiuser receiver can handle at the same time. Therefore, both of the random channel access multichannel CDMA system and the spread slotted Aloha system employing multiuser receivers can achieve perfect throughput while being stable in the region r/K = 1 - delta, delta > 0, The maximum throughput of the random channel access multichannel CDMA systems is found as K - root (1 - (1/M))K log K - O(log K), where M is the number ofchannels in the system. The maximum throughput is reached when the averagenumber of simultaneous users maximum throughput of the spread slotted Aloha systems is K - rootK log K - O(log K). The maximum throughput is reached when the packet arrival of Poisson distribution has the arrival rate lambda(m) = K - rootK log K + O(rootK/log K).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/07/20 alle ore 06:58:42