Super G?

[Kung Lau]

After some minor research on wireless routers, I took the plunge and bought a Netgear WGR614 after my Linksys BEFSR41 died yesterday. I chose the Netgear over the Linksys WRT54G due to the warranty seeing I just lost my previous Linksys product under three years. (I have not purchased the wireless PCI cards yet, doing so soon)

Just after buying the router, I went and checked the Netgear webpage, and I see that there is 108mbs model listed as Super G. Are they using a propriatary compression of some sorts? I hadn't heard of a newer standard on the market past 802.11G.

The weird thing is the pricing is near the standard 802.11G model. I wonder if I should take mine back for the later one.

Here it is for those also curious.

 

[ktwebb]

Same technique Atheros chipset based 802.11a AP's and client cards used to run their "turbo" mode. Using two channels to double the effective bandwidth. Problem is, 2.4 Ghz is an already crowded airspace. At least with .11a gear you had 8 distinct channels to choose from as a frequency base. With only three with .11b or g, I see some problems with this technology. Incidentally, the "turbo" mode of Atheros WLAN's didn't double the bandwidth from the standard 54 Mb. Not even close really and I expect about the same results with the 2.4 Hardware, although it should offer better throughput, just not what's advertised. I just can't see using multiple channels on 2.4 gear.

 

[bigshooter]

Other manufacturers have used that technique with 802.11b products before. I believe netgear and/or dlink had 802.11b products that worked in a "turbo mode" at 22mbps as well. I also have 11 channels to choose from on my 802.11b router, so I don't know where the number 3 came from, but I could be wrong.

 

[ktwebb]

 

[ktwebb]

Incorrect. THe 22 Mbps radios used a different modulation technique called Packet Binary Convolution Code. PBCC. Standard 11 Mbps radios used CCK, Complimentary Code keying.

As far as the channel number. I didn't explain that very well. In 2.4 Ghz WLAN technology, both 802.11 b and g, there are 3 frequency bases, Channels, that don't over lap. You have 1-11 on your AP, but only 1, 6, and 11 do not overlap at all. With 80o2.11a there are 8 non-overlapping channels to choose from, mainly because the current 5 Ghz .11a WLAN hardware run frfom 5.1-5.3 Ghz, or roughly a 200 Mhz spectrum to play with, where as .11b and g use around 83 Mhz of the spectrum.

 

[spidey07]

there's only three true bands with 2.4 gig wireless. for example channels 1, 2, 3 are all overlapping and are considered the same band

 

[spidey07]

Originally posted by: spidey07
there's only three true bands with 2.4 gig wireless. for example channels 1, 2, 3 are all overlapping and are considered the same band

or is it four? Ktwebb knows for sure.

 

[ktwebb]

Officially it's 3. Here is a nice little diagram that shows the overlap graphically.

802.11b and g channel set

There are those that say you can use 4 if you break them up properly. I can see that but the rule of thumb is 1 (2.412), 6 (2.437), and 11 (2.462). This on US AP's. AP's with 14 channels, Japan I believe for instance, would give you more play.

Article on using 4 Channels in the US and 5 In europe (13 available)

4 Channel claim