*X*(*z*) denotes the *z*-transform of discrete time signal *x*(*n*) and it is given by

where *z* is the complex variable and the *z*-transform of *x*(*n*) is also represented by the operator *Z* i.e.,

In equation (6.2) *X*(*z*) and *x*(*n*) are known as *z*-transform pair which is represented as

Start Free Trial

No credit card required