Note, while, that a lot of the decline emanates from a single glitch in the stream that occurs shortly following the throughput script starts managing.
A Super-G wi-fi LAN managing at whole velocity will interfere having an 11g WLAN also functioning at whole velocity. Intense throughput decline inside the 11g WLAN can happen nearly thirty feet absent and important throughput reduction should be seen all around fifty feet
Atheros has mentioned that Broadcom is harping on something common to all 802.11g merchandise and that interference may even be produced by “regular” 802.11g WLANs working in close proximity. So I 1st desired to check to check out if this were being legitimate.
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Atheros introduced its Super-G throughput enhancement engineering back again in April of the year, but it’s taken until eventually now for products and solutions to strike the shelves.
I tried both equally and located little distinction when operating the streaming and throughput scripts, so opted to use the more recent dynamic Tremendous-G for my screening.
The styles of your indicators search various from Individuals demonstrated in Figure 3 mainly because filtering is applied during the WLAN units to form the signal. But you can Evidently see that electric power from each channel’s sign overlaps into one another’s.
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When Tremendous-G drops again to normal 11g near the close on the run, you can see throughput come back approximately 2Mbps and Information Loss drop to zero, as we saw from the 11g-only screening.
The timing gave the impression to be forty five seconds of Super-G and 15 seconds of 11g within the NETGEAR BETA dynamic Super-G updates which i employed. A unique implementation superg168 of dynamic Tremendous-G in D-Connection Super-G enabled equipment employed by Broadcom in its tests confirmed the timing to be 120 seconds of Tremendous-G and 75 seconds of 11g. So it looks like Atheros, NETGEAR, or both of those are doing a little effectiveness tuning.
And whilst it’s genuine that two 11g WLANs can interfere with one another as Atheros contends, it’s only when the two are working comprehensive-tilt, and perhaps then, the interference is absent by the point the WLANs are separated by 30 ft – very well wanting the 100 toes that Atheros has become quoted as declaring would be the 11g interference zone.
Broadcom says the periodic glitch is due to a scan performed by WinXP’s “Zero Configuration” utility, and not by Broadcom’s driver.
But before you decide to go off wanting to know why Atheros would produce “an 802.11g jammer” – to quotation 1 Broadcom advertising and marketing exec, in place of a fresh conventional in wireless LAN overall performance, continue on on to Portion 2 of this Will need To find out.