Quote:
On 2002-10-02 07:01, AgoraBasta wrote:
Quote:
On 2002-10-01 19:49, Wiley wrote:
A phase modulate signal can be written as cos(w*t + p(t)) where w is the carrier frequency and p(t) is the phase modulation. The energy density is then proportional to cos<sup>2</sup>(w*t + p(t)) which is time dependent.
|
Better write it as exp(iwt+ip(t)). The energy density is then constant.
|
Better not. A time domain signal better not have an imaginary component, i.e. it must be completely real. If you wish to work in the frequency domain, that's fine. But you will have to use delta functions. [img]/phpBB/images/smiles/icon_smile.gif[/img]
<font size=-1>[ This Message was edited by: Wiley on 2002-10-02 13:40 ]</font>