Adaptive power control and MMSE interference suppression
Wireless Networks
Multiuser Detection
Distributed Discrete Power Control in Cellular PCS
Wireless Personal Communications: An International Journal
On Schemes for Multriate Support in DS-CDMA Systems
Wireless Personal Communications: An International Journal
Transmitter Power Control with Adaptive Safety Margins Based on Duration Outage
Wireless Personal Communications: An International Journal
IEEE Transactions on Wireless Communications
Adaptive multirate CDMA for uplink throughput maximization
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Multiaccess fading channels. II. Delay-limited capacities
IEEE Transactions on Information Theory
Spectral efficiency of CDMA with random spreading
IEEE Transactions on Information Theory
Linear multiuser receivers: effective interference, effective bandwidth and user capacity
IEEE Transactions on Information Theory
Asymptotically optimal water-filling in vector multiple-access channels
IEEE Transactions on Information Theory
IEEE Journal on Selected Areas in Communications
A framework for uplink power control in cellular radio systems
IEEE Journal on Selected Areas in Communications
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The asymptotically combined optimal transmission power and rate control policy is derived for a DS-CDMA time varying fading channel with multiple user classes, random spreading codes and a receiver using either a conventional matched filter (MF) or a minimum mean square error (MMSE) multiuser detector. For a general objective function, the optimal policies are given by closed form functions of a single Lagrangian multiplier. The optimal policies are demonstrated by an application, where the transmission power is adapted to the channel fade variations, and the transmission rates are adapted to the tier containing the mobile. The effect of the number of tiers on the optimal transmission rate are presented for MF and MMSE receivers in an environment with Lognormal and Rayleigh fading. It is shown that with an MMSE receiver, there is a substantial increase in the total transmission rate, whereas only a negligible increase exists with a MF receiver.