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Titolo:
A comparison of system performance using two different chip pulses in multiple-chip-rate DS/CDMA systems
Autore:
Kim, YW; Kim, YV; Kim, JH; Cho, HS; Sung, DK;
Indirizzi:
Telson Elect Co Ltd, Seoul, South Korea Telson Elect Co Ltd Seoul South Korea Elect Co Ltd, Seoul, South Korea LG Innotek Co Ltd, Seoul, South Korea LG Innotek Co Ltd Seoul South Korea Innotek Co Ltd, Seoul, South Korea LG Elect Co Ltd, Seoul, South Korea LG Elect Co Ltd Seoul South KoreaLG Elect Co Ltd, Seoul, South Korea Hankuk Aviat Univ, Koyang, South Korea Hankuk Aviat Univ Koyang South Korea uk Aviat Univ, Koyang, South Korea Korea Adv Inst Sci & Technol, Taejon 305701, South Korea Korea Adv Inst Sci & Technol Taejon South Korea 305701 5701, South Korea
Titolo Testata:
IEEE TRANSACTIONS ON COMMUNICATIONS
fascicolo: 11, volume: 49, anno: 2001,
pagine: 1988 - 1996
SICI:
0090-6778(200111)49:11<1988:ACOSPU>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
CDMA SYSTEM; CAPACITY;
Keywords:
blocking probability; capacity; chip pulse; multiple-chip-rate DS/CDMA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, YW Telson Elect Co Ltd, Seoul, South Korea Telson Elect Co Ltd Seoul South Korea o Ltd, Seoul, South Korea
Citazione:
Y.W. Kim et al., "A comparison of system performance using two different chip pulses in multiple-chip-rate DS/CDMA systems", IEEE COMMUN, 49(11), 2001, pp. 1988-1996

Abstract

This paper describes a comparison of system performance using two different chip waveforms of spreading sequences in multiple-chip-rate (MCR) direct-sequence (DS)/code-division multiple-access (CDMA) systems. The chip pulsesused in this study are closely related to the characteristics of output filter employed at transmitter. In general, the chip waveform is an importantfactor to determine the link performance. The raised cosine chip pulse with a roll-off factor of ce will be adopted for IMT-2000 systems in order to reduce both the intersymbol effect and the spectral width of the modulated signal. However, due to the complexity of obtaining quantitative results onthe performance of MCR-DS/CDMA systems, rectangular chip pulses are mainlyutilized in performance analysis. Therefore, it is necessary to investigate the effect of the chip pulses used, i.e., a rectangular and a raised cosine chip pulses on system performance in order to evaluate MCR-DS/CDMA systems accurately. Thus, the effect of the chip pulses used on the performance in MCR-DS/CDMA systems is investigated in terms of a system capacity and a blocking probability. It is shown that the system using a raised cosine chip pulse (i.e., RC system) supports at least 80% more capacity and 57% more traffic than that using a rectangular chip pulse (i.e., R system).

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Documento generato il 02/07/20 alle ore 19:11:21