Energy Efficiency Of Multi-user Mimo Random Cellular Network Based On Hcpp Theory

The rapid growth of information and communication technology leads to a large amount of energy consumption in this area. “Green communication” is a discipline that considers both the communication performance and energy consumption and use the concept named energy efficiency to valuate communication systems. This paper develop an energy efficiency model for multi-user multiple-input multiple-output(MU-MIMO)cellular networks using stochastic geometry tools and studies how green the MIMO technology is.A cellular network in which the locations of base stations(BSs) and user equipments(UEs) are modeled by stochastic geometry is named random cellular network. Compared with conventional regular hexagonal cellular models, random cellular network models resemble real cellular networks deployment much more closely. However, most studies of random cellular networks are based on Poisson point process(PPP) and do not take into account the fact that adjacent base stations should be separated with a minimum distance to avoid strong interference among each other. In this paper, we propose a multi-user multiple-input multiple-output(MU-MIMO) random cellular network model, which is based on hard core point process(HCPP) with the aforementioned minimum distance constraint for adjacent BSs. Moreover, interference and capacity models are derived for MU-MIMO HCPP random cellular networks, which include the effects of path loss, small scale fading and shadowing. Furthermore, a spectrum efficiency model as well as an energy efficiency model is presented in order to evaluate MU-MIMO HCPP random cellular networks. On the basis of the energy efficiency model, the maximum achievable energy efficiency of MU-MIMO HCPP random cellular networks is investigated. This maximum energy efficiency is shown to be a function of the number of antennas, the wireless traffic distribution, the wireless channel, and the minimum distance of adjacent BSs. And this model is compared with the PPP-based cellular network, showing that the energy efficiency of cellular network based on HCPP model is larger than that based on PPP model.