A comparison of system performance using two different chip pulses in multiple-chip-rate DS/CDMA systems

Young Woo Kim; Young Vin Kim; Jeong Ho Kim; Ho Shin Cho; Dan Keun Sung

doi:10.1109/26.966075

A comparison of system performance using two different chip pulses in multiple-chip-rate DS/CDMA systems

Young Woo Kim, Young Vin Kim, Jeong Ho Kim, Ho Shin Cho, Dan Keun Sung

Electronic and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

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 pulses used in this study are closely related to the characteristics of output filter employed at transmitter. In general, the chip waveform is an important factor to determine the link performance. The raised cosine chip pulse with a roll-off factor of α 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 on the performance of MCR-DS/CDMA systems, rectangular chip pulses are mainly utilized 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).

Original language	English
Pages (from-to)	1988-1996
Number of pages	9
Journal	IEEE Transactions on Communications
Volume	49
Issue number	11
DOIs	https://doi.org/10.1109/26.966075
State	Published - Nov 2001

Bibliographical note

Funding Information:
Paper approved by G. Cherubini, the Editor for CDMA Systems of the IEEE Communications Society. Manuscript received May 21, 1999; revised October 26, 1999 and May 11, 2000. This work was supported in part by the Korea Science and Engineering Foundation. Y. W. Kim is with Telson Electronics Company, Ltd., Seoul, Korea. Y. V. Kim is with LG Innotek Company, Ltd., Seoul, Korea (e-mail: yvkim@ lginnotek.com). J. H. Kim is with LG Electronics Company, Ltd., Seoul, Korea (e-mail: [email protected]). H.-S. Cho is with the Hankuk Aviation University, Koyang, Korea (e-mail: [email protected]). D. K. Sung is with Korea Advanced Institute of Science and Technology, Taejon, Korea (e-mail: [email protected]). Publisher Item Identifier S 0090-6778(01)10175-3.

Keywords

Blocking probability
Capacity
Chip pulse
Multiple-chip-rate DS/CDMA

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10.1109/26.966075

Cite this

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title = "A comparison of system performance using two different chip pulses in multiple-chip-rate DS/CDMA systems",

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 pulses used in this study are closely related to the characteristics of output filter employed at transmitter. In general, the chip waveform is an important factor to determine the link performance. The raised cosine chip pulse with a roll-off factor of α 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 on the performance of MCR-DS/CDMA systems, rectangular chip pulses are mainly utilized 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).",

keywords = "Blocking probability, Capacity, Chip pulse, Multiple-chip-rate DS/CDMA",

author = "Kim, {Young Woo} and Kim, {Young Vin} and Kim, {Jeong Ho} and Cho, {Ho Shin} and Sung, {Dan Keun}",

note = "Funding Information: Paper approved by G. Cherubini, the Editor for CDMA Systems of the IEEE Communications Society. Manuscript received May 21, 1999; revised October 26, 1999 and May 11, 2000. This work was supported in part by the Korea Science and Engineering Foundation. Y. W. Kim is with Telson Electronics Company, Ltd., Seoul, Korea. Y. V. Kim is with LG Innotek Company, Ltd., Seoul, Korea (e-mail: yvkim@ lginnotek.com). J. H. Kim is with LG Electronics Company, Ltd., Seoul, Korea (e-mail: [email protected]). H.-S. Cho is with the Hankuk Aviation University, Koyang, Korea (e-mail: [email protected]). D. K. Sung is with Korea Advanced Institute of Science and Technology, Taejon, Korea (e-mail: [email protected]). Publisher Item Identifier S 0090-6778(01)10175-3.",

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N1 - Funding Information: Paper approved by G. Cherubini, the Editor for CDMA Systems of the IEEE Communications Society. Manuscript received May 21, 1999; revised October 26, 1999 and May 11, 2000. This work was supported in part by the Korea Science and Engineering Foundation. Y. W. Kim is with Telson Electronics Company, Ltd., Seoul, Korea. Y. V. Kim is with LG Innotek Company, Ltd., Seoul, Korea (e-mail: yvkim@ lginnotek.com). J. H. Kim is with LG Electronics Company, Ltd., Seoul, Korea (e-mail: [email protected]). H.-S. Cho is with the Hankuk Aviation University, Koyang, Korea (e-mail: [email protected]). D. K. Sung is with Korea Advanced Institute of Science and Technology, Taejon, Korea (e-mail: [email protected]). Publisher Item Identifier S 0090-6778(01)10175-3.

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N2 - 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 pulses used in this study are closely related to the characteristics of output filter employed at transmitter. In general, the chip waveform is an important factor to determine the link performance. The raised cosine chip pulse with a roll-off factor of α 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 on the performance of MCR-DS/CDMA systems, rectangular chip pulses are mainly utilized 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).

AB - 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 pulses used in this study are closely related to the characteristics of output filter employed at transmitter. In general, the chip waveform is an important factor to determine the link performance. The raised cosine chip pulse with a roll-off factor of α 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 on the performance of MCR-DS/CDMA systems, rectangular chip pulses are mainly utilized 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).

KW - Blocking probability

KW - Capacity

KW - Chip pulse

KW - Multiple-chip-rate DS/CDMA

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VL - 49

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JO - IEEE Transactions on Communications

JF - IEEE Transactions on Communications

IS - 11

ER -

A comparison of system performance using two different chip pulses in multiple-chip-rate DS/CDMA systems

Abstract

Bibliographical note

Keywords

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