What term describes sampling two antennas to pick the input signal from the best reception?

What term describes sampling two antennas to pick the input signal from the best reception?

• A. Antenna diversity
• B. MIMO
• C. Beamforming
• D. OFDM

Answer: (A)

Antenna diversity is at work here. When a receiver uses more than one antenna, it can compare the signals it receives from each path and choose the one with the better reception (higher signal strength or SNR). This selection of the strongest signal from multiple antennas helps combat multipath fading and improves reliability, especially in environments where the signal can fluctuate between paths.

MIMO involves using multiple antennas to transmit and receive data simultaneously to increase capacity or reliability with more complex processing. Beamforming focuses signals in a specific direction by adjusting the phase and amplitude across an array, rather than simply picking the best path. OFDM is a modulation scheme that splits a signal across many subcarriers to improve robustness in multipath but doesn’t describe selecting between antennas.