Pilot Symbol Assisted Modulation

Pilot Symbol Assisted Modulation (PSAM) is a technique used in wireless communication to improve data transmission accuracy. It involves inserting known, pre-defined signals called pilot symbols at regular intervals within the data stream. These pilot symbols act as reference points, allowing the receiver to estimate and adjust for channel conditions such as noise or interference. By doing so, the receiver can better decode the actual data signals, leading to more reliable and clearer communication. Think of pilot symbols as landmarks that help navigate and correct the path of data as it travels through a noisy environment.