Performance Comparisons of Power Allocation Mechanisms for Downlink Handoff in the WCDMA System with Microcellular Environments

Li-Chun Wang*, Ming Chun Chiang, Lei Chen, Chung Ju Chang, Ching Yu Liao

*Corresponding author for this work

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

6 Scopus citations

Abstract

This paper investigates different power allocation algorithms for downlink handoff in the wideband code division multiple access system from both outage performance and power efficiency perspectives. Traditionally, the site selection diversity transmission (SSDT) scheme has been viewed as the optimal solution for downlink handoff from the standpoint of power efficiency, which selects the best base station to transmit downlink signals to the user. However, from the outage performance perspective, the user at the cell boundary may have poor quality if there is only one serving base station. Thus, we are motivated to develop an improved SSDT scheme that can take both power efficiency and outage performances in account. In this paper, we propose a joint link proportional power allocation (LPPA) and SSDT scheme. Through analysis and simulation, we demonstrate that the proposed joint LPPA and SSDT scheme is the optimal power allocation solution for downlink handoff in the WCDMA system, which not only can improve the outage performance over the SSDT scheme when the traffic intensity is low, but can be very power efficient as the SSDT scheme in the heavy traffic situation.

Original languageEnglish
Title of host publicationProceedings of the Sixth ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2003
EditorsC.-F. Chiasserini, H. Hassanein
Pages2-10
Number of pages9
DOIs
StatePublished - 1 Dec 2003
EventProceedings of the Sixth ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2003 - San Diego, CA, United States
Duration: 19 Sep 200319 Sep 2003

Publication series

NameProceedings of the ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2003

Conference

ConferenceProceedings of the Sixth ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2003
CountryUnited States
CitySan Diego, CA
Period19/09/0319/09/03

Keywords

  • Handoff
  • Joint SSDT and LPPA mechanism
  • Link proportional power allocation (LPPA)
  • Power allocations
  • Site selection diversity transmission (SSDT)
  • WCDMA

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  • Cite this

    Wang, L-C., Chiang, M. C., Chen, L., Chang, C. J., & Liao, C. Y. (2003). Performance Comparisons of Power Allocation Mechanisms for Downlink Handoff in the WCDMA System with Microcellular Environments. In C-F. Chiasserini, & H. Hassanein (Eds.), Proceedings of the Sixth ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2003 (pp. 2-10). (Proceedings of the ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2003). https://doi.org/10.1145/940991.940994