Per-bin DFE for advanced OQAM-based multi-carrier wireless data transmission systems

Abstract

This paper presents a non-linear per-bin adaptive equalization in orthogonal multi-carrier data transmission system with the Nyquist-type sub-channel spectral shaping. Previously introduced linear equalization is augmented by three decision feedback filters to improve performance in presence of narrow-band interference (NBI), and to enable exploitation of implicit diversity of multipath fading channels. Adaptation properties of per-bin DFE equalization are analyzed by computer simulation. The bit error rate performance comparison between conventional OFDM and the OQAM-based multi-carrier systems is provided, and the potential advantage of using spectrally well shaped orthogonal subchannels in advanced wireless applications is pointed out.