A Differential FM Detector for Low-IF Radios
نویسنده
چکیده
This paper describes the implementation of a differential Continuous Phase FSK (CPFSK) detector suitable for Low-IF receiver architectures. By using both in-phase and quadrature channels the double frequency term resulting after differential detection can be avoided. The digital detector assumes limited I/Q input signals which are 16 times oversampled. The proposed detector can be used for CPFSK with a modulation index in the range 0.28-0.5. Simulation results are given for a worst case situation in which the modulation index is 0.28.
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تاریخ انتشار 1999