Chapter 1 Signals and systems 5 1.3.2 Discrete-Time Complex Exponential and Sinusoidal Signals x|n=Can-0<n<+∞0 xIn=ce where a=e B 1. Real exponential signals a=a rea rin=a 2006 Fall2006 Fall Chapter 1 Signals and Systems § 1.3.2 Discrete-Time Complex Exponential and Sinusoidal Signals   n x n = C −  n  +   n x n Ce = where   = e 1. Real Exponential Signals  = a real   n x n = a