S（t）= p（t +ϕ（t））（1），其中，S（t）=是指抖动性的信号波形，P（t）=指的是一个波形的性质，ϕ不失真（t）=指相位偏移
According to the previous research conducted and the literature study that has been considered for the purpose of this study, jitter can be defined with two different definitions where one is in a digital format while the other is an analog. In the analog definition of jitter, jitter is explained to be a “phase offset” or a “phase nose” that is responsible of continually changing the timings of a receiving and transmitting signal. The above definition is particularly used when analyzing any analog waveforms such as clock signals.
This can be explained by a formula that is:
S(t) = P(t + ϕ(t)) (1), where, S(t) = refers to the signal waveform that is jittered in nature, P(t) = refers to a waveform that is undistorted in nature and ϕ(t) = refers the phase offset.
It is necessary that the transition signals of 1/0 & 0/1 signals are continuously observed for any occurrence of jitters. The bit stream can be transmitted within the digital communication system using different ways where one way would be sending, as applied by the initial definition of jitter, Non-Return-to-Zero (NRZ) data streams without any signals from the clock which further results in creation of clock signals at the receiver end itself. This requires the use of CDR circuit; the process involved in recovering clock signals from the receiver end data signals is known as CDR.
Volume and speeds of transmitting data have been continuously and increasingly supporting unrestricted growth in the flow of traffic over the backbone of internet mainly because of the movies being spread and other services for the delivery of content being available. The need for having infrastructure of communication with high speed has resulted in increasing the strong demand for the sources of reference signal with high frequency that help in providing stability in the output signals (Astrahan, 2006).