What is BER (bit error rate)?

The bit error rate is the quantity of bit errors per unit time. The bit error ratio is the ratio of number of bit errors by the total number of sent bits during a time interval. Bit error ratio is expressed as a percentage. Bit Error Rate is utilized as a significant parameter in defining the performance of information channels. When communicating information from one point to another, the key parameter is how many errors will appear in the information that appears at the remote end.