METHOD AND ITS DEVICE DEMODULATING GAUSSIAN FILTERED MINIMUM SHIFT KEYING

摘要

The method involves a frequency converting step of shifting a received GMSK signal into a baseband and separating the shifted signal into I and Q component signals. An A/D converting step quantifies the I and Q component signals and encodes the quanfied I and Q component signals received to generate I and Q component data. An offset error detecting step checks the correlation between the I and Q component data and the standard waveform data to detect a slot selects the I and Q component slot data by the slot interval inform. and offset error amount and compensates the offset error of the selected I and Q component slot data. A software decision step integrates a predetermined number of data among the I and Q component slot data and determines the I and Q component demodulation data according to the result of the integration.