Due to the decrease in the “bit error ratio (BER)” of Jitter, the quality of digital communication is compromised thus resulting in reduced as well as “poor” quality. For this reason, evaluation of the effect of Jitter on the digital communication system is essential so as to reduce Jitter and obtain a lower bit error ratio. Research states that the devices can be negatively affected by jitter; the signal travelling through the device and the clock signal often change or fluctuate in the presence of jitter. The presence of thermal noise causes the jitter to affect the clock signal while the limited channel bandwidth or clock jitter causes the jitter to have an effect on the data signal. The timed relationship between input, output & clock signals is a highly crucial key in digital technology. Any deviation in this “timed” relationship may result in data transfer error that in turn is referred to as “jitter.” For the purpose of digital communication, the data flows from the transmitter to receiver where the data is arranged in a sequence of 0’s and 1’s. Transmission of communication occurs through interfaces made up or fiber or copper; even air acts as an effective transmission interface in modern digital communication. Additionally, the modern communication system is designed in such a way that it maximizes “throughput” and minimizes errors and thus, these errors can be evaluated with the use of the quantity of Bit Error Ratio.
The jitter that is caused by any incoming signal is responsible for breaking down the Data Recovery (CDR) circuit along with Clock of the receiver that is a part of the digital communication system. This malfunction results in poor time sampling of data which in return would cause bit errors. In other words, it can be said that Jitter acts as the primary cause for the errors in the data that is received.