Iterative MMSE Space-Time Zero-Crossing Precoding for Channels With 1-Bit Quantization and Oversampling

Systems with 1-bit quantization and oversampling at the receiver are promising for IoT applications due to low hardware complexity and low energy consumption. Zero-crossing precoding implies that the information is conveyed in the time instance of a zero-crossing within the symbol time interval. In this context, this study proposes an iterative spatial temporal MMSE precoding algorithm. In comparison to the joint space time MMSE precoder, the proposed method shows a significantly lower computational complexity and a comparable MSE performance.