[Olsr-users] G1 / Linksys WRT demo

[marc fawzi]

Hi Mitar,

There are many ways to enhance s/n in an amplifier circuit or DSP-based
amplification. It's not magic per se. A signal can be extracted from noise
through various techniques, including both real-time as well as
post-processing approaches. I agree that it is not magic, per se, but it's
been done in many different scenarios for many decades now, and I'm
interested in exploring what real-time approach might be suitable in the Ghz
range, including but not limited to MIMO based ones.

My question about the possibility of enhancing the signal (in both
directions) at the WRT nodes comes from my curiosity to see what can be done
as far as making the experimental OLSR network more practical and reliable
by extending the 2-way coverage area of the WRT nodes as much as current
technology allows.

Will report back as to what commercial amplifier/booster works once I have
gone thru the steps of getting olsrd working properly on G1 and WRT54GL
nodes, which I expect will generate more questions.

For now, take a look at this 2-way 802.11b amplifier:

http://www.danets.com/turbotenna/turbotenna%20009xt.php

Thanks,

Marc








On Sat, Jan 16, 2010 at 9:00 AM, Mitar <(spam-protected)> wrote:

> Hi!
>
> On Fri, Jan 15, 2010 at 8:01 PM, marc fawzi <(spam-protected)> wrote:
> > What I'm not clear about is if the signal from the phone could be made
> more
> > detectable to te WRT if the WRT is preceded by a 2-way signal booster
> (i.e.
> > a "booster" for outgoing signal and an "amplifier" for incoming signal).
>
> Amplifiers are not magical things. They can distort signal and they
> also amplify noise together with the signal. And having a bigger area
> with one node means having more multiple possible noise sources per
> one node. Amplifying that does not really help. But riding of noise
> does (like using reserved spectrum like GSM does, using directional
> antenna, using MIMO-like techniques to cancel out electromagnetic
> interference (or to enhance just signal)).
>
>
> Mitar
>
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