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

Iskandar, A. Kurniawan, E. B. Sitanggang, S. 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 publication2008 IEEE Global Telecommunications Conference, GLOBECOM 2008
Pages4065-4069
Number of pages5
DOIs
Publication statusPublished - 2008 Dec 1
Event2008 IEEE Global Telecommunications Conference, GLOBECOM 2008 - New Orleans, LA, United States
Duration: 2008 Nov 302008 Dec 4

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference

Conference

Conference2008 IEEE Global Telecommunications Conference, GLOBECOM 2008
CountryUnited States
CityNew Orleans, LA
Period08/11/3008/12/4

Keywords

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

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Step size optimization for fixed step closed loop power control on WCDMA high altitude platforms (HAPs) channel'. Together they form a unique fingerprint.

  • 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 2008 IEEE Global Telecommunications Conference, GLOBECOM 2008 (pp. 4065-4069). [4698555] (GLOBECOM - IEEE Global Telecommunications Conference). https://doi.org/10.1109/GLOCOM.2008.ECP.780