An adaptive receiver for constant modulus signal interference suppression in civil aviation air- ground communication

This paper focuses on the main interference signals of the civil aviation air-to-ground communication, which characteristics is constant modulus. An interference suppression receiver based on constant modulus algorithm (CMA) and adaptive cancelling technique is developed in this paper. The constant modulus algorithm is used to extract the reference signal from mixed signal and adaptive canceller is used to subtract the constant modulus interference .The experimental results show that the system is applicable and effective.