Error statistics of closed-loop power control in Multirate DS-CDMA cellular systems

Li Chun Wang, Chih-Wen Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

In this paper, we investigate the error statistics of the close-loop power control scheme with variable spreading factors for the multi-rate services in the third generation wideband CDMA (WCDMA) system. We demonstrate that the long scrambling pseudo-noise code, besides its well known feature in differentiating users and base stations, can improve power control false command over a frequency-selective fading channel as well. Our computer simulation results indicate that the SIR measurement error can be reduced by 3 dB in a typical case, and the power control false command can be reduced from 27 % to 10 % in comparison to using pure short Walsh codes. It will be shown that the close-loop power control error is a composite function of spreading factor, target E, / N9 and Doppler frequency, The statistics of closed loop power control false command can be easily characterized by a Bernoulli distribution with a parameter provided by our results.

Original languageEnglish
Title of host publicationIEEE Wireless Communications and Networking Conference, WCNC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages712-716
Number of pages5
ISBN (Electronic)0780373766
DOIs
Publication statusPublished - 2002 Jan 1
Event2002 IEEE Wireless Communications and Networking Conference, WCNC 2002 - Orlando, United States
Duration: 2002 Mar 172002 Mar 21

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume2
ISSN (Print)1525-3511

Other

Other2002 IEEE Wireless Communications and Networking Conference, WCNC 2002
CountryUnited States
CityOrlando
Period02-03-1702-03-21

Fingerprint

Error statistics
Power control
Code division multiple access
Frequency selective fading
Measurement errors
Base stations
Fading channels
Statistics
Computer simulation
Composite materials

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Wang, L. C., & Chang, C-W. (2002). Error statistics of closed-loop power control in Multirate DS-CDMA cellular systems. In IEEE Wireless Communications and Networking Conference, WCNC (pp. 712-716). [993355] (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC.2002.993355
Wang, Li Chun ; Chang, Chih-Wen. / Error statistics of closed-loop power control in Multirate DS-CDMA cellular systems. IEEE Wireless Communications and Networking Conference, WCNC. Institute of Electrical and Electronics Engineers Inc., 2002. pp. 712-716 (IEEE Wireless Communications and Networking Conference, WCNC).
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Wang, LC & Chang, C-W 2002, Error statistics of closed-loop power control in Multirate DS-CDMA cellular systems. in IEEE Wireless Communications and Networking Conference, WCNC., 993355, IEEE Wireless Communications and Networking Conference, WCNC, vol. 2, Institute of Electrical and Electronics Engineers Inc., pp. 712-716, 2002 IEEE Wireless Communications and Networking Conference, WCNC 2002, Orlando, United States, 02-03-17. https://doi.org/10.1109/WCNC.2002.993355

Error statistics of closed-loop power control in Multirate DS-CDMA cellular systems. / Wang, Li Chun; Chang, Chih-Wen.

IEEE Wireless Communications and Networking Conference, WCNC. Institute of Electrical and Electronics Engineers Inc., 2002. p. 712-716 993355 (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Wang LC, Chang C-W. Error statistics of closed-loop power control in Multirate DS-CDMA cellular systems. In IEEE Wireless Communications and Networking Conference, WCNC. Institute of Electrical and Electronics Engineers Inc. 2002. p. 712-716. 993355. (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2002.993355