Admission control for VSG-CDMA systems supporting integrated services

Tsern-Huei Lee*, Jui Teng Wang

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

5 Scopus citations


Variable spreading gain CDMA (VSG-CDMA) technique with transmitting power control has recently been proposed to provide integrated services in a wireless packet network. System capacities of VSG-CDMA systems with and without considering user activity factors were derived based on some intuitive arguments. The analysis is imprecise because a user's transmitted power is considered part of the interference to its own signal. In this paper, we present a more precise analysis. An optimal power vector assignment and a simple criterion for all users to achieve simultaneously their quality of service, requirements (in terms of bit energy-to-interference density ratios) are derived. We found from numerical examples that, compared with the rough analysis given in [4], significant improvement can be obtained. An access control scheme is also studied to guarantee delay bound requirements. Simulation results reveal that more connections can be further accommodated with access control.

Original languageEnglish
Number of pages6
StatePublished - 1 Dec 1998
EventProceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration - Sydney, NSW, Aust
Duration: 8 Nov 199812 Nov 1998


ConferenceProceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration
CitySydney, NSW, Aust

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