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Packet service in UMTS: effects of the radio interface parameters on the performance of the downlink shared channel

  • Flamini Borgonovo
  • Antonio Capone
  • Matteo Cesana
  • Luigi Fratta
Chapter

Abstract

The UMTS W-CDMA radio interface is characterized by great flexibility and a variety of different physical and logical channel types. For example, on the downlink, the DCH offers circuit switching, the FACH uses packet switching and the DSCH uses packet switching with closed loop power control. Furthermore, several user rates and protections are possible, by choosing suitable parameters, such as spreading factors, code rates and ARQ schemes. In this paper we present the results, obtained by a detailed simulation, about the effect of several parameters and system alternatives on the capacity of the downlink segment of the W-CDMA interface with packet service. In particular, we investigate the effect of the spreading factor and the code rate on the DSCH capacity and delay-throughput performance.

Keywords

Power Control Code Rate Spreading Factor Universal Mobile Telecommunication System Radio Interface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • Flamini Borgonovo
    • 1
  • Antonio Capone
    • 1
  • Matteo Cesana
    • 1
  • Luigi Fratta
    • 1
  1. 1.DEIPolitecnico di MilanoItaly

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