Zero-Crossing Precoding with MMSE Criterion for Channels with 1-BIT Quantization and Oversampling

Systems with coarse quantization have attracted a great interest due to the low complexity and low energy consumption requirements of new applications as IoT. In this study, we present a novel waveform for the bandlimited channel with 1-bit quantization and oversampling. The novel method implies that the information is conveyed within the time instances of zero-crossings, which is devised together with a space-time MMSE precoding. Numerical evaluations of the BER show that the proposed approach outperforms the existing method and that the MMSE criterion yields a benefit in comparison to the maximum distance to decision threshold criterion for low SNR.