In this paper, uplink cellular networks with multiantenna Base Stations (BSs) and interference-aware power control are studied. The locations of the multi-antenna BSs are modeled as points of a Poisson Point Process (PPP), and Maximum Ratio Combining (MRC) and Optimum Combining (OC) receivers are compared. Extensive system-level simulations are carried out and the impact of interference-unaware and interference-aware fractional power control is analyzed. Several numerical results and performance trends are illustrated in terms of coverage probability, rate and power consumption. It is shown that competing performance trends emerge for the achievable performance of cell-edge and cell-center Mobile Terminals (MTs).