phoneboy2
@shawcable.net
| reply to cybersank
Re: Deploying over 90 squared km: Wimax or not?
Just forget about all the hype surrounding WiMax distance claims. IMHO certain proponents of WiMax such as Intel did everyone a disservice by spewing all that BS. All they created was more skepticism and distrust.
The truth is that the best you can hope for in a NLOS indoor CPE application is about 5km with WiMax not 30. Those are real world test results. Not numbers on a piece of paper. Also, forget about the claims of 70mb/s. The real world testing is showing T1 or less speeds. 500kb/s is the conservative figure being tossed around.
I have finally found an excellent source of information that seems to be extremely balanced and accurate. I have been hearing good things about wikipedia. I am now one of their greatest fans based on this excellent technical article about WiMax. Bravo wikipedia!!!
»en.wikipedia.org/wiki/Wimax |
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cybersank
join:2006-01-15
Somerville, MA | Thanks phoneboy2,
Looking at prices for 802.16 equipment I'll definitely will go with wi-fi. I think for that type of range, 900 will do the same. |
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Nowireneeded
join:2004-02-11
Montoursville, PA
| reply to phoneboy2
phoneboy2 said "The truth is that the best you can hope for in a NLOS indoor CPE application is about 5km with WiMax not 30. Those are real world test results."
I'll take it with the exepectations of mobility in 2007.
phoneboy2 said "The real world testing is showing T1 or less speeds. 500kb/s is the conservative figure being tossed around."
Sector capacity per 5 Mhz is 14-18 meg's depending on the manufacturer. So in a 20 Mhz sector 70 meg's (some systems are full duplex) of throughput can be achieved. Not even close to throughput tests of 802.11b wifi based gear at 7 meg's, Canopy or Trango at 10, or others in the same channel space. That's right....for those doing the math.... in the same channel space Wimax can give you 10 X's the performance of a wifi based system. Wimax slams wifi in efficiency...no comparison at all and if you throw in voip it's even worse. If you don't want to compare indoor self install use the Wimax eave mount units and you'll close to double your cell size and speed per cpe.
Cybersank, Comparing a voip/data network on 900 Mhz vs a Licensed Wimax play is like comparing apples and oranges. If you have the money, can get the spectrum, and are connecting 1,000's of users over a large area, Wimax will be the way to go. Period. |
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