Analysis of Throughput Gain in Multi-tier Heterogeneous Networks

Abstract

In this paper, we propose a mathematical framework of throughput for multi-tier heterogeneous network involving cell load factors, noise figure, and data rate which measures the resource consumption. Due to increase in wireless networks, interference among the networks has also been increased which motivates the use of interference mitigation technique. Hence, a statistical framework of throughput analysis in 5G has been presented to mitigate the interference using successive interference cancellation (SIC) technique in heterogeneous networks and boost the throughput gain. Interference at various tiers degrades the throughput of the system. Throughput gain for both cellular and D2D user is calculated, and effect of interference cancellation technique is analyzed. The results show that network throughput gain can be significantly increased by the use of better interference cancellation technique and spatially separated antennas. Throughput gain is measured with respect to user density, load factor, data rate, and noise figure at fixed $\text {SIR}_{{T}}$ for with and without using cancellation techniques.