Abstract
In this paper, we propose and analyze a simple adaptive uplink power control scheme, called two-level channel inversion, for data traffic in a cellular CDMA system. The basic idea is to reduce out-cell interference by reducing the rate of, or even suspending, transmission when the wireless channel is in a bad condition. We first describe the scheme in detail, and then present a probabilistic analysis model for evaluating the system performance. With this model, we determine the queueing delay and system throughput. Numerical results show that in comparison with the traditional channel inversion scheme, the two-level channel inversion scheme can substantially improve system throughput at a moderate cost of extra queueing delay. Finally, we present a design algorithm to optimize the overall performance while maintaining each user's quality of service (QoS).
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Ding, L., Lehnert, J.S. Power Control Using Two-Level Channel Inversion for Data Traffic in a Cellular CDMA System: Performance and Optimal Design. International Journal of Wireless Information Networks 7, 115–132 (2000). https://doi.org/10.1023/A:1009535627929
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DOI: https://doi.org/10.1023/A:1009535627929