Cellular heterogeneous systems (HetNets) will be standout among those key empowering impacts for 5G. Downlink Uplink decoupling (DUDe) is an idea in which a user is associated with the macro cell for downlink connectivity and the small cell for uplink connectivity. It enhances uplink data rate, less power consumption, and balances load between the macro cell and small cells. Because of the incorporation of DUDe, a user needs to perform separate uplink and downlink connectivity dissimilar to traditional handovers in coupled networks. In this paper, we have calculated SIR, data rates, and CDF for small and macro cells for both coupled and decoupled networks. Simulation Outcomes demonstrate the impact of DUDe, expanded uplink, SIR, increased data rates, and Cumulative Distribution Function (CDF) plots show that decoupling dependably beats the coupled association.

Index Terms- Downlink Uplink decoupling, Signal to Interference Ratio, Cumulative Distribution Function.