KoolMoe
Aw Man
Premium
join:2001-02-14
Annapolis, MD
clubs:
 ·Verizon FIOS
 ·Speakeasy
| reply to Seaboogers
Re: It's a bad idea
While I largely agree with your critique of the parent post, you say, "so interference is not an issue."
I assume you say this because WiMax will be the only signal in that spectrum so there won't be intereference from other signals.
But does WiMax have some mystical ability to overcome weather, geography, and structures? With anything wireless, there will always be some type of possible interference...
KM
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War is a test of power, not a search for truth or justice. Can the violation of the primacy of love, destruction of life, and tearing of society truly be the will of God? |
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RadioDoc
58ef2c0
Premium,ExMod 2000-03
join:2000-05-11
·AT&T Midwest
| Taking the analogy further, coax, copper pairs and fiber are subject to "interference" from backhoes, lightning strikes, wildfire and some drunk plowing into a pole at 120 MPH. Nothing is "interference proof".
A properly designed microwave link has enough fade margin to remain up during weather events.
WiMax has one critical characteristic coax, copper pairs and fiber lack: Mobility. If it indeed comes to market, that is where you'll see it.
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Toolmaster of La Grange. |
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adsldog
join:2000-12-01
Woodstock, GA
1 edit | reply to KoolMoe
Yes it is non line of site. That is not to say that if your in a bunker that it will get a signal to you, it will not or if the tower is transmitting out and you are in a low spot that the signal might skip over you. The best way to look at it is like a transistor radio if the radio has the antenna up and sitting in the window you should get good reception. If it is in the center of the house or in the basement your signal will degrade. The distances that it will work at are 3-7 miles for fixed WiMax. The ones I have worked on had 4 to 6 T-1's feeding each tower with as many as 3 towers in one area. Not meant to compete with WiFi or DSL but can even be the back haul for WiFi. Keep in mind this is a solution for areas that are stuck with dial up only. |
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Seaboogers
join:2004-11-01
Sarasota, FL
| reply to KoolMoe
Since WiMax will be run in a licensed part of the spectrum...you can up the power a lot more to deal with obstructions...now I'm not saying this would make it be able to penetrate say a mountain....but you can get further penetration into a home.
As for geography...WiMax isn't a P-t-P solution...its a solution for the end user. I would certainly hope if a WISP were to use WiMax they don't think they can just drop a base station into a location and service a 30 mile radius.
As for weather...you'd be pretty surprised at how well wireless when setup properly works in inclement weather...I don't think there'd be an issue this side of a hurricane/tornado/something of that magnitude.
Properly installed systems have fade margins for weather built in. |
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rf_engineer
join:2003-08-04
USA
| reply to KoolMoe
said by KoolMoe  :But does WiMax have some mystical ability to overcome weather, geography, and structures? With anything wireless, there will always be some type of possible interference... Perhaps this is arguing semantics, but topography and signal attenuation due to precipitation are totally different items from interference. A properly engineered point-to-point or multipoint system won't have availability issues due to weather. While you need to have line-of-sight for typical microwave systems, there are lower speed non-line-of-sight systems in use, so yes, wireless does have mystical abilities to overcome structures and geography  |
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