Multi-stage interference canceller using adaptive signal processing

Abstract

This paper proposes the structures of multi-stage interference cancellers, which make the replica of each user and each path to cancel from received signal. In our proposed multi-stage method, the replica and the residual signal are sent to the next stage. In this method, the interference by other paths of an assigned user is very small because the replica is combined after the correlation detection. In order to estimate each radio channel accurately, we propose the correction method of the radio channel estimation by adaptive signal processing. We show the BER performance and cell capacity of our proposed method quantitatively by computer simulations.