FPGA Central

Hi,

Is there any difference between the two terms 'Broadband' and 'Wideband'?

Thanks

ZedToe

On 20 Aug 2003, ZedToe wrote:

> Hi,
>
> Is there any difference between the two terms 'Broadband' and 'Wideband'?
>
> Thanks
>
> ZedToe
>

hmmm...
it seems to me that broadband usually refers to the data rate, while
wideband refers to the occupied spectra of the transmitted signal. for
example, you have BROADBAND INTERNET, and WIDEBAND WIRELESS. something
like that.

--
The most rigorous proofs will be shown by vigorous handwaving.
http://www.mit.edu/~kusuma

opinion of author is not necessarily of the institute

[email protected] (ZedToe) wrote in message news:<[email protected] com>...
> Hi,
>
> Is there any difference between the two terms 'Broadband' and 'Wideband'?
>
> Thanks
>
> ZedToe

I don't know if there's an established convention anywhere, but to me
"broadband" means some signal where the spectrum coefficients are
large and continuous over some extended bandwidth B:



________
| |
------------------------------------>
' B ' f

The "wideband" could relate to some frequency band b that needs to be
monitored or processed, but the spectrum features that are found inside
that band may be narrow-band or not-so-broad band:

_
| | | | |
------------------------------------->
' b ' f
1 2 3 4

Here there is a wide-band signal that consists of four frequency components,
three of which are narrow-band (1,2,4) and one which is broad-band (4).

Again, don't take this as more than my personal speculations.

Rune

On 20 Aug 2003 01:02:11 -0700, acoustictech_zhangtao@yah[email protected]
(ZedToe) wrote:

>Hi,
>
>Is there any difference between the two terms 'Broadband' and 'Wideband'?
>
>Thanks
>
>ZedToe

There aren't any "official" definitions of these in wide use, so it's
usually determined contextually. On the other hand, Ultrawideband
has a sort of "official" definition because of regulatory concerns,
and that may differ from how other people use the term.

Terminology in this field is sort of a free-for-all in a lot of ways.
There are a lot of overloaded terms and terms with confusing
ambiguities. I'm always wary when someone supplies an "official"
definition for something like this since it may not be universally
understood.



Eric Jacobsen
Minister of Algorithms, Intel Corp.
My opinions may not be Intel's opinions.
http://www.ericjacobsen.org

"ZedToe" <[email protected]> wrote in message
news:[email protected] om...
> Hi,
>
> Is there any difference between the two terms 'Broadband' and 'Wideband'?
>

You may as well throw in "spread spectrum" too!

Broadband refers to internet connections - most often in common usage.

Wideband refers to one form of FM modulation and could be a relative term
used for any number of other things.

Spread spectrum refers to a type of wideband modulation as above.

Fred