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This paper investigates the application in IEEE 802.11ac/ax systems of received bit information rate (RBIR) technique in order to estimate the effective signal-to-interference-plus-noise ratio used to abstract the physical layer (PHY) performance in system level simulations. The RBIR technique is evaluated based on simulation results of 802.11ac PHY operating over both canonical flat fading and independent and identical distributed and spatial-correlated frequency selective single-user and multi-user multiple input multiple output channels. We have concluded that RBIR PHY abstraction methodology is accurate enough to provide first order insights on system level performance and design options with reduced computational complexity. Finally, it is also described the application of RBIR PHY abstraction scheme to schedule on the flight the modulation code scheme that achieve a target quality-of-service.

On Application of PHY Layer Abstraction Techniques for System Level Simulation and Adaptive Modulation in IEEE 802.11ac/ax Systems