Interference Statistics and Capacity Analysis for Uplink Transmission in\n Two-Tier Small Cell Networks: A Geometric Probability Approach

Small cell networks are evolving as an economically viable solution to\nameliorate the capacity and coverage of state-of-the-art wireless cellular\nsystems. Nonetheless, the dense and unplanned deployment of the small cells\n(e.g., femtocells, picocells) with restricted user access significantly\nincreases the impact of interference on the overall network performance. To\nthis end, this paper presents a novel framework to derive the statistics of the\ninterference considering dedicated and shared spectrum access for uplink\ntransmissions in two-tier small cell networks such as the macrocell-femtocell\nnetworks. The derived expressions are validated by the Monte-Carlo simulations.\nNumerical results are generated to assess the feasibility of shared and\ndedicated spectrum access in femtocells under varying traffic load and spectral\nreuse scenarios.\n