Hi,
> May I know that does NS 3.6 support interference of overlapping
> channel.
> For example, Will 802.11b "1" channel interfere with 802.11b "2"
> channel in ns 3.6?
No unfortunately it is still not supported.
> If yes, what is the necessary step to enable this type of
> interference?
The easiest thing you can do is to modify the code of the method
YansWifiChannel::Send in src/devices/wifi/yans-wifi-channel.cc so that
it implements some simple model for adjacent channel interference
(such as an additional attenuation in the receiver power).
Nicola