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http://dx.doi.org/10.3837/tiis.2020.08.012

Energy Efficiency Analysis and Optimization of Multiantenna Heterogeneous Cellular Networks Modeled by Matérn Hard-core Point Process  

Chen, Yonghong (Department of Communication and Information Engineering, Nanjing University of Posts and Telecommunications)
Yang, Jie (Department of Communication Engineering, Nanjing Institute of Technology)
Cao, Xuehong (Department of Communication and Information Engineering, Nanjing University of Posts and Telecommunications)
Zhang, Shibing (School of Electronics and Information, Nantong University)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.14, no.8, 2020 , pp. 3366-3383 More about this Journal
Abstract
The Poisson point process (PPP) is widely used in wireless network modeling and performance analysis because it can provide tractable results for heterogeneous cellular networks (HetNets) analysis. However, it cannot accurately reflect the spatial distribution characteristics of the actual base stations (BSs). Considering the fact that the distribution of macro base stations (MBSs) is exclusive, the deployment of MBSs is modeled by the Matérn hard-core point process (MHCPP), and the deployment of pico base stations (PBSs) is modeled by PPP. This paper studies the performance of multiantenna HetNets and improves the energy efficiency (EE) of HetNets by optimizing the transmit power of PBSs. We use a simple approximate method to study the signal-to-interference ratio (SIR) distribution in two-tier MHCPP-PPP HetNets and derive the coverage probability, average data rate and EE of HetNets. Then, an optimization algorithm is proposed to improve the EE of HetNets. Finally, three transmission technologies are simulated and analyzed. The results show that multiantenna transmission has better system performance than single antenna transmission and that selecting the appropriate transmit power for a PBS can effectively improve the EE of the system. In addition, two-tier MHCPP-PPP HetNets have higher EE than two-tier PPP-PPP HetNets.
Keywords
Energy efficiency; Multiantenna; Heterogeneous cellular networks; $Mat{\acute{e}}rn$ hard-core point process; Coverage probability;
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