Spectrum-Sharing Transmission Capacity With Interference Cancellation

This paper analyzes spectrum sharing networks with Interference Cancellation (IC). The efficiency of spectrum sharing is determined primarily by interference, which in turn depends on the spatial densities of systems, the methods of interference suppression and/or cancellation, and the spectrum sharing method: underlay, which allows all systems to use the spectrum concurrently, or overlay, which makes a system utilize only its exclusively assigned spectrum. This paper finds the performance gain from IC in terms of Spectrum-sharing Transmission Capacity (S-TC), which is defined as the number of successful transmissions per unit area while guaranteeing the target outage probabilities of all coexisting systems.