The Shannon Limit

The Shannon limit, also known as the channel capacity, is a fundamental concept in information theory that defines the maximum rate at which data can be transmitted over a communication channel without errors, given the amount of noise present. It indicates the highest efficiency achievable for reliable communication, ensuring that the information sent can be accurately received and decoded. Beyond this limit, errors become inevitable, regardless of the error-correction methods used. In simple terms, it sets a theoretical cap on how fast we can send data through a noisy environment while maintaining accuracy.