Noise budget modeling in Simulink for phase detector

Define optimum frequency plan for minimum noise for Phase Detector for different options: under-sampling, Nyquist sampling and oversampling in Simulink. Define optimum number of bits for ADC and DAC. Define optimum type of filters with minimum taps and proper sampling rate. LPF bandwidth is 10 Hz, 100Hz, and 1 kHz. The maximum clock of the real system is 200 MHz. Consider two reference signals, close to 455 kHz and 5 MHz, that must work simultaneously.