Principles of Mobile Communication
Principles of Mobile Communication
Parallel and Distributed Computation: Numerical Methods
Parallel and Distributed Computation: Numerical Methods
IEEE Transactions on Wireless Communications
Analysis of TCP performance under joint rate and power adaptation in cellular WCDMA networks
IEEE Transactions on Wireless Communications
Optimal power control for Rayleigh-faded multiuser systems with outage constraints
IEEE Transactions on Wireless Communications
IEEE Journal on Selected Areas in Communications
A framework for uplink power control in cellular radio systems
IEEE Journal on Selected Areas in Communications
Minimum energy coding in CDMA wireless sensor networks
IEEE Transactions on Wireless Communications
Wireless Personal Communications: An International Journal
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A radio power control strategy to achieve maximum throughput for the up-link of CDMA wireless systems with variable spreading factor is investigated. The system model includes slow and fast fading, rake receiver, and multi-access interference caused by users with heterogeneous data sources. The quality of the communication is expressed in terms of outage probability, while the throughput is defined as the sum of the users' transmit rates. The outage probability is accounted for by resorting to a lognormal approximation. A mixed integer-real optimization problem P1, where the objective function is the throughput under outage probability constraints, is investigated. Problem P1 is solved in two steps: firstly, we propose a modified problem P2 to provide feasible solutions, and then the optimal solution is obtained with an efficient branch-and-bound search. Numerical results are presented and discussed to assess the validity of our approach.