Multiple Choice: Estimation at the Receiver Three items that we must first estimate and then lock to before successfully demodulating a received digital signal are:
a. Signal peak factor, signal SNR, signal distortion
b. Signal power, baud rate frequency and phase, carrier (or center) frequency and phase
c. Multipath delay, oscillator tolerances, antenna size in wavelengths
d. Transmitting antenna type (e.g., Yagi, aperature), receiver noise figure, receiver linearity
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