Abstract-Coordinated multi-point (CoMP) architecture has proved to be very effective for improving the user fairness and spectral efficiency of cellular communication system, however, its energy efficiency remains to be evaluated. In this paper, CoMP system is idealized as a distributed antenna system by assuming perfect backhauling and cooperative processing. This simplified model allows us to express the capacity of the idealized CoMP system with a simple and accurate closed-form approximation. In addition, a framework for the energy efficiency analysis of CoMP system is introduced, which includes a power consumption model and an energy efficiency metric, i.e. bit-per-joule capacity. This framework along with our closed-form approximation are utilized for assessing both the channel and bit-per-joule capacities of the idealized CoMP system. Results indicate that multi-base-station cooperation can be energy efficient for cell-edge communication and that the backhauling and cooperative processing power should be kept low. Overall, it has been shown that the potential of improvement of CoMP in terms of bit-per-joule capacity is not as high as in terms of channel capacity due to associated energy cost for cooperative processing and backhauling.
Heliot et al. REF introduced an idealized CoMP-enabled cellular system and evaluate its EE, which shows that the potential improvement of CoMP in terms of EE is limited by the energy cost of cooperative processing and backhauling.
Energy Efficiency Analysis of Idealized Coordinated Multi-Point Communication System
2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
Computer Science