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From: Bruno George Moraes <brunogm0@gmail.com>
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Subject: [Make-wifi-fast] Fwd: Non-overlapping mode OFDM wifi
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Date: Tue, 25 Apr 2017 18:09:21 -0000
X-Original-Date: Tue, 25 Apr 2017 15:08:59 -0300
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hi,

well today i was thinking about non-ovelapping channels like 1_5_9_13 but
for US or  Canada 12 (low power but OK) ;  Then it hit me!!
* 4 channel layout for US:*

*OFDM* subcarriers use *16.25*mhz / 2 = 8.125 then
2412 -2462 = 50mhz
*tail *e *head*  -16.25mhz  so there is space for two non-overlapped
channels with some guardband
(channel 1 center freq) 2412 + 8.125 =  2420.125
(chan 11 center freq)   2462   - 8.125 =  2453.875           2420.125 -
2453.875 = *-33.75*

2420.125 + 8.125 = *2428.25*  (~ new channel 4 )
2428.25 +  16.25 *+ 1.25mhz guard*  = *2445.75*     (~new channel 8)
2445.75 + 8.128 = 2453.875
2462 - 8.125 = 2453.875


the thing is how to use this in newer N AC...

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<div dir=3D"ltr">hi,<br><div class=3D"gmail_quote"><div dir=3D"ltr"><div><d=
iv><br></div>well today i was thinking about non-ovelapping channels like 1=
_5_9_13 but for US or=C2=A0 Canada 12 (low power but OK) ;=C2=A0 Then it hi=
t me!! =C2=A0 <br><b>=C2=A04 channel layout for US:</b><br><br><b>OFDM</b> =
subcarriers use <b>16.25</b>mhz / 2 =3D 8.125 then <br>2412 -2462 =3D 50mhz=
 <br><b>tail </b>e <b>head</b>=C2=A0 -16.25mhz=C2=A0 so there is space for =
two non-overlapped channels with some guardband<br>(channel 1 center freq) =
2412 + 8.125 =3D=C2=A0 2420.125 <br>(chan 11 center freq)=C2=A0=C2=A0 2462=
=C2=A0=C2=A0 - 8.125 =3D=C2=A0 2453.875=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 2420.125 - 2453.875 =3D <b>-33.75</b> =C2=A0=C2=A0=
 <br>=C2=A0<br>2420.125 + 8.125 =3D <b>2428.25</b>=C2=A0 (~ new channel 4 )=
<br></div>2428.25 +=C2=A0 16.25 <b>+ 1.25mhz guard</b>=C2=A0 =3D <b>2445.75=
</b>=C2=A0=C2=A0=C2=A0=C2=A0 (~new channel 8)<br><div>2445.75 + 8.128 =3D 2=
453.875<br>2462 - 8.125 =3D 2453.875 <br><br><br></div><div>the thing is ho=
w to use this in newer N AC... <br></div></div>
</div><br></div>

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