[Olsr-users] G1 / Linksys WRT demo

[marc fawzi]

One more (the rest you guys can Google):

"The WZ-2301A is an indoor solution 1W bi-directional Booster designed for
2.4GHz wireless LANs. This unit comes with an easy plug-and-play
installation, which works together with an indoor Wireless Access Point to
improve its operation range and performance. The unit is ideal for use with
2.4 GHz frequency hopping or direct sequence spread spectrum radio modems
and 802.11b/g devices. The amplifiers increase range by providing transmit
gain as well as low-noise receive gain. This receive gain increases the
receive sensitivity of wireless LAN Access Point. Full output power of 1W is
achieved with only 5 mW input into the Booster."

http://www.amazon.com/Indoor-802-11b-Fixed-Gain-Booster-Amplifier/dp/B000V1SUQE/ref=pd_rhf_shvl_1

On Sat, Jan 16, 2010 at 11:28 AM, marc fawzi <(spam-protected)> wrote:

> I'll investigate using this 802.11b 2-way amplifier (
> http://www.danets.com/turbotenna/turbotenna%20009xt.php) with a proper
> directional antenna.
>
> The concern the maker of this 2-way 802.11b amplifier seems to state has to
> do with isotropic radiation level, which must be limited to conform to
> regulation. Ultimately, I envision an outdoor enclosure for the WRT with an
> outdoor directional antenna placed on top and pointed away from the home
> toward the coverage area.
>
>
> On Sat, Jan 16, 2010 at 11:14 AM, marc fawzi <(spam-protected)> wrote:
>
>>
>> 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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