Causal and anti causal

[TorrieTTT]

How do I show that any signal can be decomposed into sum of causal and anti casual signals

 

[wwfeldman]

re-read your textbook
examine the definitions and examples of causal
examine the definitions and examples of anti-causal

start with
some signal = (causal signal) + (anti-causal signal)
use the definitions to show this is always true

 

[salmanshu]

you can represent the signal in causal and anti causal signal by converting into minimum phase system and all pass system.