802.11 wireless development through the ages
We take a look at the progression of consumer Wi-Fi technology over the last 15 years
We take a look at the progression of consumer Wi-Fi technology over the last 15 years
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802.11 wireless development through the ages
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])ragon_\/oid
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Wonder if the WUG's will upgrade to 802.11ac 
Prof.Merlin
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])ragon_\/oid;8033522 said:Wonder if the WUG's will upgrade to 802.11ac
Would be so awesome, but we already ran out of spectrum using 40mhz in the west mesh.
80-160MHz spectrum use for one device? That's a ton of spectrum. How is that going to work? Far less channels to choose from -> far more noise/interference. Hardly an improvement in technology if they're just using more frequency to accommodate the increased bandwidth. More like a regression because it's just creating more radiation/pollution
UnUnOctium
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LOL. facepalms all around
.11ac is at a very high frequency so:
1) it won't be used for any range longer than your living room. At most for transmissions across the road.
2) the higher your centre frequency, the higher your bandwidth will be when taken as a fixed percentage of centre frequency. (read up on Q factors).
.11ac is at a very high frequency so:
1) it won't be used for any range longer than your living room. At most for transmissions across the road.
2) the higher your centre frequency, the higher your bandwidth will be when taken as a fixed percentage of centre frequency. (read up on Q factors).
zamicro
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I can see that with ac the 5ghz band will become as useless as the 2.4ghz band.
It's the same frequency band used by 802.11a and 802.11n right now. I don't have much experience with 802.11a, but n is used by all the WUGS, and that's not just "across the road". I have set up a 2 km directional transmitter at a friend's place before.
Prof.Merlin
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Its the same spectrum yes, but using more channel width. So in the end you have less channels to use.
As I said, using n technology in the west wug, we ran out of channels. So ac would not work that well
UnUnOctium
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Yes but the higher bandwidth means that there will be less W/Hz for each sub-channel. Since the sum (integral) of the total PSD of the transmitted signal has to add up to at most 30 dBm (ICASA rules, EIRP) the average SNR for all the sub-channels will be less 15 dB (or 8 for 80 MHz) for all of them compared to 802.11n since you have 2-4 times the bandwidth in which to transmit the same power. I wouldn't be surprised if ICASA limits it to an even lower power of say 10 dBm.