Signal-level-based dynamic power control for co-channel interference management

Abstract

Dynamic power control in cellular systems has long been used for interference reduction, dynamic range control, and terminal battery savings. The analysis and numerical study, in shadow-fading environments, of power control algorithms based on received desired-signal levels are reported. Variational analysis of a simple case shows that compensation for 1/2 the dB value of path-loss variation is the optimal policy for S/I management, rather than the full-compensation algorithm. Simulations of more general cases verify this result and show the degree of robustness to errors and implementation constraints.