An enhanced coding strategy for FTN-OFDM/OQAM transceiver design

In this paper, we consider a transmission scheme combining precoded Faster-Than-Nyquist signaling (FTN) and Orthogonal Frequency Division Multiplexing Offset Quadrature Amplitude Modulation (OFDM/OQAM). The precoding method, named Sparse Interference Pre-Cancellation (SIPC), aims at reducing the interference introduced by FTN signaling at the transmitter side. In order to further improve the receiver performance, we propose additional enhancements to the channel encoder, notably, the bit-to-symbol mapping and symbol to time-frequency-positions mapping. Via simulations, we show that the proposed modifications improve the Bit-Error-Rate (BER) performance of the considered transceiver.