Signal-Level-Based Dynamic Power Control for Co-channel Interference Management

Dynamic power control in cellular systems has been long practiced and widely proposed for interface reduction, dynamic range control, and terminal battery savings. This paper reports analysis and numerical studies, in shadow-fading environments, of power control algorithms based on received desired-signal levels. 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 often-proposed full compensation algorithm. Simulations of more general cases verify this result and show the degree of robustness to errors and implementation constraints.