Re: Bandwidth

Ed Casas (edc@ece.ubc.ca) Tue, 29 Feb 2000 12:36:50 -0800 

Date: Tue, 29 Feb 2000 12:36:50 -0800
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: Bandwidth



On Tue, Feb 29, 2000 at 11:41:15AM -0800, sergio gonzalez wrote:

> Could anyone give an explanation of what the 'null-to-null' bandwith is?.
> The book barely mentions the concept, and I don't have anything in my
> notes with regards to this concept neither.

Some modulation schemes have power spectra with nulls
(frequencies where the power is zero).  The null-to-null
bandwidth is the frequency span between the two nulls nearest the
carrier frequency.

For example, see page 240 for a description of the null-to-null
bandwidth for a BPSK signal.

-- 
Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592