Which describes spread spectrum frequency hopping?
If interference is detected by the receiver, it will signal the transmitter to change frequencies
RF signals are clipped to generate a wide band of harmonics which provides redundancy to correct errors
A binary bit stream is used to shift the phase of an RF carrier very rapidly in a pseudorandom sequence
Rapidly varying the frequency of a transmitted signal according to a pseudorandom sequence✓الإجابة الصحيحة
الشرح
Frequency hopping keeps the signal narrowband at any single instant but moves the carrier from channel to channel following a pseudorandom pattern that the receiver reproduces in step. Spreading by shifting the carrier phase with a fast chip stream is the direct-sequence method, a different technique.