Analysis of Heterogeneous and Hybrid Networks with Successive Interference Cancellation

Wireless systems such as 5G, beyond 5G and 6G are becoming more heterogeneous with the introduction of low power nodes including femtocells, relays, and distributed antennas. At the same time, various devices access is a promising technology in improving energy efficiency, throughput, delay, as well as spectrum efficiency. The complication of the heterogeneous networks makes the resulting interference more complex and more challenging in both analysis and simulation. Successive interference cancellation (SIC), as an effective interference cancellation technique, is attracting much attention recently. In this paper, we analyze the impact of SIC on the heterogeneous and hybrid network, which consists of multi-tier heterogeneous nodes including the machine type communication (MTC) nodes. For the heterogeneousness of the network, we adopt the stochastic equivalence of aggregate interference to regard the multi-tier network as a single tier, so that we derive the probability of successful transmission with SIC technique for the network. We find that in an open access policy, the conditional success probability for the overall network is irrelevant to any certain tier without or with SIC. In the end, we analyze the impact of the SIC on the success probability of the heterogeneous and hybrid network.