802.11g and 802.11n differences

802.11g
2003 – Speed 54Mbit – Operates in 2.4 Ghz band – One can have 3 non overlapping channels (channel 1, 6 and 11)

802.11n
2009 – Up to speeds of 300 Mbit – Operates in 2.4 Ghz and 5 Ghz band
If 2.4 Ghz used still have 3 non overlapping channels (channel 1, 6 and 11)
If 5 Ghz used still have 23 non overlapping channels

The n draft uses the MIMO technique, this means that the normal 20Mhz (150Mbps) channel is doubled to 40 Mhz (300Mbps). This doesn’t mean that you’ll have 2 times the number of non overlapping channels. It assures twice the data transfer rate due to multiple antennas on your access points.

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4 Replies to “802.11g and 802.11n differences”

  1. Wherever would you get this information and facts?

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  2. Great day! This is my first comment here so I just wanted to offer a fast shout out and say I genuinely take pleasure in reviewing your post. Can you suggest other blogs/websites/forums that cover the exact same topics? Thanks!

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  3. Yes, I agree. I had trouble with my Kyocera KR1 when trvneliag, even when I was ~5m from the unit! Finally, I changed the channel assignment to 3, which was fine for EVDO. I found channel 3 to be far away from channel 6 (which is commonly used) yet is far enough from channel 1 (which is used enough to create interference).Seems like 802.11n is showing up just in time. Can you imagine how standard b/g would continue to degrade over the next several years without a new standard that makes better use of bandwidth?

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