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Simulation and performance study of MSK system based on single frequency tracker

Adaptive filter technology is mainly used in many different fields such as signal processing, image processing. It is a targeted filter method usually used for removing noise. This paper focuses on the adaptive filtering algorithm in the application of demodulation technology. The least mean square (LMS) algorithm is used to study the demodulation of Minimum Frequency Shift Keying (MSK) signal by adaptive filtering technology and the bit error performance is analyzed. The design uses a Single Frequency Tracker (SFT), which is used to obtain the parameters of the previous time to adjust the current parameters of the momentautomatically. Hence, it can track the frequency, phase and amplitude of the signal. In this paper, we use the single frequency tracker (SFT) to replace the band-pass filterand low-pass filter in the traditional coherent demodulation system.