Interference cancellation for two interferences with single co-site interference cancellation system

Abstract

This paper investigates the interference cancellation method with single co-site interference cancellation system (CICS) when there are two interferences simultaneously. The system model was established to analyze the interference cancellation performance. By time-domain analysis, the formulas of steady-state weights and interference cancellation ratios (ICRs) were deduced. The method of delay in reference signal picking branch was put forward to achieve the cancellation of two interferences simultaneously. The theoretical analysis was verified by the simulation experiment.