Error performance is a research area focused on evaluating the accuracy and reliability of communication systems, especially in scenarios where there may be disruptions, interference, or noise affecting the transmission of data. Researchers in this field analyze the performance of different communication techniques, protocols, and algorithms in terms of their ability to detect and correct errors, and ensure that data is transmitted correctly and efficiently. This research area plays a crucial role in improving the overall performance and reliability of communication networks, particularly in wireless, satellite, and underwater communication systems.