Two mathematical programming approaches for pilot power optimization in WCDMA networks

Pilot power optimization in WCDMA networks is receiving increasing research attention. In this paper, we propose a mathematical programming approach for this problem. In particular, we present a novel mathematical formulation for minimizing pilot power subject to full coverage. In the formulation, the optimal power levels are determined simultaneously for all the cells. We further enhance the formulation by utilizing the discrete nature of the power levels. Our case study shows that optimized power levels yield substantial savings in total power consumption when compared to using a uniform pilot power.