Step size optimization for fixed step closed loop power control on WCDMA high altitude platforms (HAPs) channel

Iskandar, A. Kurniawan, E. B. Sitanggang, Shigeru Shimamoto

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

    3 Citations (Scopus)

    Abstract

    This paper evaluates fixed step algorithm of closed loop power control and investigates an optimum step size for WCDMA communication employing high altitude platforms (HAPs). In CDMA, power control must be used to overcome near-far effect, shadowing and multipath fading. Users who are distributed within HAPs coverage will have different channel characteristic depending on their elevation angle. Therefore, parameter of power control algorithm should be designed to comply with the channel characteristic. Step size is one parameter in fixed step closed loop power control that will be investigated in this paper. Considering the measured HAPs channel characteristic, this paper investigates an optimum step size that will resulting a minimum power control error (PCE). Computer simulation shows that optimum step size depends on user's elevation angle. The higher the elevation angles the smaller the optimum step size of the power control.

    Original languageEnglish
    Title of host publicationGLOBECOM - IEEE Global Telecommunications Conference
    Pages4065-4069
    Number of pages5
    DOIs
    Publication statusPublished - 2008
    Event2008 IEEE Global Telecommunications Conference, GLOBECOM 2008 - New Orleans, LA
    Duration: 2008 Nov 302008 Dec 4

    Other

    Other2008 IEEE Global Telecommunications Conference, GLOBECOM 2008
    CityNew Orleans, LA
    Period08/11/3008/12/4

    Fingerprint

    Power control
    Multipath fading
    Code division multiple access
    Communication
    Computer simulation

    Keywords

    • Closed loop
    • Fixed step
    • HAPs
    • Power control
    • SIR
    • Step size
    • WCDMA

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Iskandar, Kurniawan, A., Sitanggang, E. B., & Shimamoto, S. (2008). Step size optimization for fixed step closed loop power control on WCDMA high altitude platforms (HAPs) channel. In GLOBECOM - IEEE Global Telecommunications Conference (pp. 4065-4069). [4698555] https://doi.org/10.1109/GLOCOM.2008.ECP.780

    Step size optimization for fixed step closed loop power control on WCDMA high altitude platforms (HAPs) channel. / Iskandar; Kurniawan, A.; Sitanggang, E. B.; Shimamoto, Shigeru.

    GLOBECOM - IEEE Global Telecommunications Conference. 2008. p. 4065-4069 4698555.

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

    Iskandar, Kurniawan, A, Sitanggang, EB & Shimamoto, S 2008, Step size optimization for fixed step closed loop power control on WCDMA high altitude platforms (HAPs) channel. in GLOBECOM - IEEE Global Telecommunications Conference., 4698555, pp. 4065-4069, 2008 IEEE Global Telecommunications Conference, GLOBECOM 2008, New Orleans, LA, 08/11/30. https://doi.org/10.1109/GLOCOM.2008.ECP.780
    Iskandar, Kurniawan A, Sitanggang EB, Shimamoto S. Step size optimization for fixed step closed loop power control on WCDMA high altitude platforms (HAPs) channel. In GLOBECOM - IEEE Global Telecommunications Conference. 2008. p. 4065-4069. 4698555 https://doi.org/10.1109/GLOCOM.2008.ECP.780
    Iskandar ; Kurniawan, A. ; Sitanggang, E. B. ; Shimamoto, Shigeru. / Step size optimization for fixed step closed loop power control on WCDMA high altitude platforms (HAPs) channel. GLOBECOM - IEEE Global Telecommunications Conference. 2008. pp. 4065-4069
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