16-QAM

16-QAM (16-Quadrature Amplitude Modulation) is a method used in digital communication to send information efficiently over radio waves or cables. It encodes data by changing the amplitude and phase of a carrier signal, creating 16 different signal states. Each state represents a unique combination of bits (4 bits per symbol). By using these combinations, 16-QAM can transmit data at higher rates compared to simpler methods, making it popular in TV broadcasts, Wi-Fi, and cellular networks. Essentially, it packs more information into each signal change, optimizing bandwidth and speed in digital communications.