The superg168 Diaries
The superg168 Diaries
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My past list of 11g-only tests mixes The 2 situations by managing the streaming script over the Broadcom-centered WLAN and the throughput script on the Atheros-based.
It’s not likely you’d be substantially bothered by a neighbor’s closely utilized 802.11g WLAN although viewing a wirelessly streamed video clip yourself.
Atheros has stated that Broadcom is harping on a little something prevalent to all 802.11g items and that interference can even be generated by “normal” 802.11g WLANs functioning in near proximity. So I first wished to exam to discover if this have been correct.
Something else is hitting the ,er, lover, nevertheless, in the form of an issue stirred up by rival WLAN chipmaker Broadcom in the course of the latest Las Vegas Comdex clearly show.
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A close-by Tremendous-G WLAN operating a 2Mbps online video stream will most likely not lead to substantial interference to an 11g WLAN that’s also streaming a video
This take a look at is meant to emulate the Broadcom Comdex demo (apart from that it works by using two 802.11g WLANs) and determine the extent of interference on the video clip stream from a close-by WLAN that’s operating as rapid as it may possibly go.
The styles on the signals seem various from superg168 those demonstrated in Figure three since filtering is used while in the WLAN equipment to shape the signal. But you can Plainly see that electrical power from Each individual channel’s sign overlaps into one another’s.
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The draw back – as Broadcom wants All people to learn – is Channel Bonding cuts a broader swath while in the 2.4GHz spectrum, allegedly interfering with all eleven channels while in the 2.
You’d be unlikely to notice interference concerning two 11g WLANs running online video streams at any distance
Atheros’ Channel Bonding technologies isn’t new, as it’s been employed for a number of years now in Atheros’ 802.11a “Turbo” attribute. NETGEAR’s 108Mbps Technological innovation overview paper describes that Channel Bonding operates through the use of two radio channels in a method that they seem as just one, better-velocity channel to the two the transmitter and receiver.
As I explained in my Comdex coverage, the brief story is Broadcom is asserting that Atheros’ Super-G dependent goods will interfere with neighboring 802.11b and g networks, severely restricting their velocity and, in some instances, shutting them down absolutely.
Broadcom was notably absent from this first spherical of announcements, opting rather (inside of a remarkably conservative transfer) to wait right up until the ratification of 802.11g on June thirteen to introduce its Xpress technology.