Signal interference occurs when unwanted signals disrupt the transmission of information in communication systems. This can happen in various forms, such as radio waves, Wi-Fi, or cellular signals. Interference can be caused by physical obstacles, like buildings, or by other electronic devices operating on similar frequencies. There are two main types of signal interference: co-channel interference, which happens when multiple signals share the same frequency, and adjacent-channel interference, where signals on nearby frequencies interfere with each other. Understanding and managing these interferences is crucial for maintaining clear and reliable communication.