What is 'frequency hopping' in wireless communication?

Frequency hopping is a spread spectrum technique used in wireless communication where the transmitter rapidly switches between different frequencies during transmission. This approach enhances the robustness and security of the communication link. By hopping between frequencies, the system can reduce interference and eavesdropping, making it harder for unauthorized parties to intercept the signal.

This technique is particularly beneficial in environments with a high level of electromagnetic interference, as it allows the signal to avoid frequency bands that might be congested or experiencing interference. The synchronized timing between the transmitter and receiver ensures that they remain in communication despite the rapid changes in frequency.

Other options do not accurately capture the essence of frequency hopping. For instance, stabilizing connection quality and combining multiple channels are not specific to frequency hopping, and data compression pertains to reducing the data size rather than the frequency of transmission. Thus, option B is the accurate description of frequency hopping in wireless communication.