What main issue can an echo cause in a wireless communication system?

Echo in a wireless communication system primarily causes distortion or interference in signal quality. This issue arises when a transmitted signal reflects off surfaces, such as walls or buildings, and returns to the receiver with a delay. When these delayed signals overlap with the original transmission, they can create confusion in deciphering the intended message, potentially leading to miscommunications or a reduced clarity of audio or data.

In the context of wireless communication, maintaining signal quality is crucial for effective communication. Distortion from echo can lead to audible feedback in voice communication or data errors in digital transmissions. Therefore, managing echo is essential for ensuring clear and reliable connections, particularly in environments where reflections are more likely to occur.