[TriLUG] interoperability: 802.11g and n

[Joseph Mack NA3T]

On Sun, 4 Oct 2009, Joseph Mack NA3T wrote:

> 802.11n is not mesh routing (as I thought). It's 100Mbps using MIMO (multiple 
> in, multiple out) antennas, ie 2 or more antennas at each end. The multiple 
> antennas are used to reduce interference, through among other things, on the 
> fly phasing for each packet. Unless a large number of elements is in use, 
> this seems to be a computationally intense procedure for not much gain to my 
> mind. I didn't find the packet protocol underneath. I didn't find any 
> examples of devices using it.

found one, it seems that it operates at 5GHz. I guess it's 
going to be hard to fit 100Mbps into the 2.54 GHz band

http://www.data-alliance.net/-strse-146/Alfa-500mW-802.11n-USB/Detail.bok

Joe

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Joseph Mack NA3T EME(B,D), FM05lw North Carolina
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