zillah - 19/8/06 at 11:14
While I was trying to refresh my knowledge about these three standards
(802.11a, 802.11b, 802.11g), I found this :
1- code:
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_
gci993747,00.html
quote:
There is less
interference with 802.11a than with 802.11b, because 802.11a provides more
available channels
2- code:
http://en.wikipedia.org/wiki/802.11
quote:
required. 802.11a has 12
non-overlapping
3- code:
http://www.networkworld.com/columnists/2003/1020wizards.htm
l
quote:
802.11b access point with
a total of 11 channels
4- code:
http://www.cisco.com/univercd/cc/td/doc/product/wireless/ai
ro1200/accsspts/ap120scg/bkscgaxa.htm
With these two tables we have got :
1- 802.11a 16 channels
2- 802.11b 14 channels
5- I read in some documentation long time ago:
quote:
The 802.11 b/g standard
defines a total of 14 frequency channels. The FCC allows channels 1 through
11 within the U.S.; whereas, most of Europe can use channels 1
through 13. In Japan, you have only one choice: channel 14. 802.11g is
fundamentally the same as 802.11b, except it is designed for higher
throughput
Why there are a difference with the numbers of channels for a specific
standard ? Is this related to overlap and non-overlap ?
Thanks
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