Multiple-Input Multiple-Output Overlap-Save Frequency-Domain Decision-Feedback Equalization for Single-Carrier Systems in Time-Varying Environments

In this letter we propose a novel frequency domain equalization (FDE) scheme for single carrier multiple input multiple output (MIMO) systems over time varying channels Based on frequency domain decision feedback equalization (FD DFE) we design a feedforward filter with constraint such that the equalization can be easily realized segment by segment with the help of the overlap save (OLS) method Since the segment length and block length can be designed independently our proposal sets relatively short segment length to obtain good performance in time varying environments and very long block length to achieve high spectral efficiency Furthermore we present two scenarios in the design of filters for MIMO systems