What is OFDM?

OFDM stands for Orthogonal Frequency Division Multiplexing. It is a digital transmission technique used in many modern communication systems, such as Wi-Fi, 4G LTE, and digital television. OFDM works by splitting a high-speed data stream into multiple lower-speed streams that are transmitted simultaneously over different frequencies, which are mathematically orthogonal to each other. This approach helps to reduce interference and improve data throughput, especially in environments with multipath propagation. OFDM is widely used because it is robust against signal fading and can efficiently utilize available bandwidth.