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On uplink power control using two-level channel inversion: scheme, performance, and optimal design in a cellular CDMA system for data traffic

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2 Author(s)
Ling Ding ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Lehnert, J.S.

We propose and analyze a simple adaptive uplink power control scheme, 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, user transmission when the wireless channel is in a bad condition. We present a probabilistic analysis model and then evaluate 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 the system throughput at a moderate cost of extra queueing delay. Finally, we present a design algorithm to optimize the overall performance

Published in:

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st  (Volume:3 )

Date of Conference:

2000

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