Precoding Aided Iterative FDE for Reduced CP Single-Carrier Block Transmission Systems
Single-carrier block transmission systems with Frequency Domain Equalization (FDE) suffers from power and bandwidth efficiency loss due to the cyclic extension. Conventional schemes to reduce the cyclic extension rely heavily on Turbo architecture which has much higher computational complexity. To make good compromise between performance and complexity, the authors proposed a precoding aided iterative FDE technique with reduced-length cyclic extensions. They emphasized that the proposed scheme effectively redistributes the dominant part of residual distortion and ensures reliable symbol estimate, which is superior to the conventional non-Turbo schemes.