Interference Cancellation Performance of a Three-Channel Adaptive Co-site Interference Cancellation System

Abstract

This paper investigates the convergence characteristic of a three-channel adaptive interference cancellation system (AICS-3ch) and the influence of some on-ideal factors on AICS-3ch. The convergence course was analyzed by solving weight equations. The calculation method of interference cancellation ratio was analyzed and deduced under the influence of different gain and zero shift on AICS-3ch. The design criterion with different gain and the effective suppression method of zero shift were studied and proposed. Finally, the validity and effectiveness of the analysis results and the proposed method are confirmed by simulation experiment.