Power Allocation in Multirate DS/CDMA Systems Based on Verhulst Equilibrium

This paper extends the discrete Verhulst power equilibrium method, previously suggested in [1], to the power-rate optimal allocation problem. Multirate users associated with different types of traffic are aggregated to distinct user' classes, with the assurance of target rate allocation per user and QoS. Therein, single-rate Verhulst power allocation algorithm was adapted to the multirate DS/CDMA power control problem. The analysis was carried out taking into account the convergence time (number of iterations) and quality of solution in terms of the normalized square error (NSE), considering static and dynamic realistic mobile channels. Computational complexity was addressed and compared to the analytical solution based on interference matrix inverse and the Foschini solution as well.