Transmitter power control for DS/CDMA cellular mobile radio networks

For a given channel allocation, the capacity and quality of communications of cellular radio systems using direct sequence/code-division multiple-access (DS/CDMA) can be increased by using a transmitter power control scheme to combat the near-far problem. Centralized and distributed transmitter power control schemes used to minimize the outage probability due to cochannel interference in cellular radio systems have been investigated in previous papers. In these papers, however, the effect of adjacent channel interference (near-far problem) is neglected. The goal of our paper is, based on the previous papers models and ideas, to investigate transmitter power control strategies appropriate for DS/CDMA high capacity cellular radio systems. Monte-Carlo simulation results of these power control schemes indicate that substantial system capacity gains can be obtained with respect to conventional systems. It is also shown that the performance of properly designed distributed algorithms can closely approximate that of the optimum centralized power control scheme.