Hybrid time-frequency layered space-time receivers for severe time-dispersive channels

Single carrier modulations (SC) combined with frequency domain equalization (FDE) techniques have been shown to be a valuable alternative to the popular OFDM modulations, especially in regard to its robustness to RF implementation impairments. We introduce a class of SC-FDE receivers for a layered space-time architecture (LST). These receivers have a hybrid structure with frequency domain feedforward and time domain feedback filters. The performance of the proposed receivers are evaluated for severe time-dispersive channels.