A 2D space-frequency receiver with reduced-rank multistage Wiener filters for MC-CDMA systems

We propose a 2D receiver structure for MC-CDMA systems with a reduced-rank multistage Wiener filter, where the proposed 2D receiver does not require angle of arrival estimation and explicit channel estimation. Due to the faster convergence property of reduced-rank processing, it outperforms MMSE-based receivers with the classical Wiener solution estimated by using a small finite number of samples.