Energy-Aware Utility Regions: Multiple Access Pareto Boundary

Power management and energy-awareness has become popular in mobile computing as well as mobile communications. In future wireless communication systems, the energy efficiency of terminals and base stations has to be improved. Therefore, we propose a new utility function which is the difference of the capacity and a weighted power cost term. Next, the utility region for single-antenna and multi-antenna multiple access channels is characterized. We show that the SISO MAC utility region is convex and provide a closed form expression for the Pareto boundary. We need the Pareto boundary to compute efficient operating points. Furthermore, an iterative algorithm is developed for weighted sum utility maximization in MISO and MIMO MAC. All results are illustrated in discussed by numerical simulations.