Spectral efficient channel estimation algorithms for FBMC/OQAM systems: A comparison

Spectrally efficient channel impulse response (CIR) estimation in the sense of minimal training overhead is a key issue for the successful deployment of Filter Bank Multicarrier (FBMC) with Offset Quadrature Amplitude Modulation (OQAM). In this contribution we perform a comparison between channel estimation algorithms considering two different models for the received subcarrier signals: a per-subcarrier narrowband and a broadband channel model. We also consider three cases of spectrally efficient channel estimation by employing different training sequence occupation of the subcarriers.