Downlink Coverage Analysis in a Heterogeneous Cellular Network
In this paper, the authors consider the downlink Signal-to-Interference-plus-Noise Ratio (SINR) analysis in a heterogeneous cellular network with K tiers. Each tier is characterized by a Base-Station (BS) arrangement according to a homogeneous Poisson point process with certain BS density, transmission power, random shadow fading factors with arbitrary distribution, arbitrary path-loss exponent and a certain bias towards admitting the Mobile-Station (MS). The MS associates with the BS that has the maximum instantaneous biased received power under the open access cell association scheme. For such a general setting, they provide an analytical characterization of the coverage probability at the MS.