Iterative interference cancellation for the DFT Precoded Filter Bank System

Methods to remove the intrinsic interference in filter bank multicarrier system (FBMC) have been recently proposed in the literature. Precoding/decoding techniques like fast Fourier transform FBMC, block filtered OFDM and pruned DFT spread FBMC are some examples. In this paper, we propose an alternative technique called D FT Precoded Filter Bank associated to a novel iterative interference cancelation (IIC) receiver. The main idea is to use a prototype filter with a high overlapping factor to maintain good spectral confinement. On the other hand, this leads to an increase of the intrinsic interference in this alternative technique. The use of IIC together with this new transmission technique assures bit error rate (BER) performance as good as the one obtained when using prototype filters with a lower overlapping factor. Furthermore, simulations results also reveal robust performance in high mobility scenarios.