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Active Contributor

Join Date: Sep 2008
Location: Saudi Arabia, Jeddah
Posts: 17

About Wi-Max?

02/15/2009 2:28 AM

Hi Every one.

I need to make a Mesh or Point-to-Point network with distance range 45-100KM. NLOS.
GSM & 3G services are not available.
we tried several solutions -even Wi-Max- but it was not stable.
i need your advice about the best solution or if you know a good & tested brand of Wi-Max.

Best Regards.
Many thanks

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Guru
Engineering Fields - Systems Engineering - New Member Popular Science - Weaponology - New Member

Join Date: Jun 2006
Location: Borrego Springs
Posts: 2636
Good Answers: 62
#1

Re: About Wi-Max?

02/15/2009 4:51 AM

from Wiki: A commonly-held misconception is that WiMAX will deliver 70 Mbit/s over 31 miles/50 kilometers. In reality, WiMAX can only do one or the other — operating over maximum range (31 miles/50 km) increases bit error rate and thus must use a lower bitrate. Lowering the range allows a device to operate at higher bitrates.

So actual distance, line of sight limitations, and urban noise all contribute to signal loss.

Depending on terrain and budget WIMAX may still be your best option, with more closely spaced towers as repeaters.

And depending on budget there are point to point microwave commercial solutions used in telecommunications. This would require contracting with one of the larger telco providers for drumhead antenna solutions.

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Guru
United Kingdom - Member - Not a new member!

Join Date: Jun 2008
Location: USA/Europe
Posts: 4547
Good Answers: 68
#2

Re: About Wi-Max?

02/16/2009 1:18 AM

Hello DrMogbl:

I am sorry, what country did you say you were in?

WiMAX or microwave, as in Mobile telephones is slow compared to your needs of 3G/3D? The other way may be to use SKY or VIRGIN as ISP's? I know that in the UK they have fibre-optics that are used by Virgin. And Sky uses Microwaves again. The fibre-optic system is pretty good and will do what you want. But, if you are using this stuff in the US I am not familiar with how much of the country is laid with the optic cable? Virgin or any other fibre-optic system is what I have in mind.

It may be that you can use it on short video links. Or on longer ones if you have time to stream the video and let it buffer before watching it. It is going to be difficult which ever way you try.

Are you talking of 'live' video-cast or similar? I am still looking but think the info you got from LinLinch is pretty good, plus the info from me on fibre-optics, if that was possible.

Take care............

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Power-User
Nigeria - Member -  Member

Join Date: Aug 2007
Location: Port Harcourt Nigeria
Posts: 206
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#3

Re: About Wi-Max?

02/28/2009 7:30 AM

DrMogbl,

Wimax is still your best bet.

The use of Radio frequency equipment in the UHF band will likely solve your problem of instability for that range of distance. But will be at the cost of your desired thruput, that is, if you desire a thruput of >4Mbps. If less, this could be what you want. I am refering to 400 to 700 MHZ frequency band as against the traditional 2.5 and 3.3 GHZ.

We are at present discussing with a provider that has indicated ability to provide WiMAX facility for 450MHZ and 700MHZ frequency bands.

Cheers,

ethobil

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