Multi-Level Modulation is a technique used in communication systems to transmit data more efficiently. It involves encoding multiple bits of information into a single symbol, allowing for higher data rates without requiring additional bandwidth. This is achieved by using various signal levels, which can represent different combinations of bits. One common example of Multi-Level Modulation is Quadrature Amplitude Modulation (QAM), which combines both amplitude and phase variations to convey information. By increasing the number of levels, such as in 16-QAM or 64-QAM, more data can be transmitted simultaneously, making it suitable for applications like digital television and wireless communication.