Intrinsic interference-aware adaptive FBMC transmission with automatic modulation classification

Abstract

This manuscript analyzes an adaptive filter bank multicarrier transmission system in which intrinsic interference arising from imperfect equalization is taken into account in the bit loading (BL) and automatic modulation classification (AMC) method. Designated for highly frequency-selective fading channels, a general filter design for a subcarrier-independent channel equalization is presented. Furthermore, this contribution investigates the influence of residual interference after multi-tap equalization on the signal-to-interference-and-noise power ratio in application to adaptive techniques such as BL and AMC which rely on the information about the subcarrier link quality. Simulation results for a typical indoor propagation setup reveal a considerable system performance improvement at high signal-to-noise power ratios (SNRs) when utilizing the information about the interference power in the considered BL and AMC method whereas a minor advantage is obtained at low SNRs.