Figure 14: 2.4G Channel Distribution map
Figure 15 is the spectrum of the 20MHz channel. The signal of CH1 has been attenuated to below -100dBm
in CH6, which has little effect on CH6. Therefore, we can achieve wireless coverage by multiplexing
CH1/CH6/CH11 channels.
Figure 15: Spectrum of the 20MHz channel
From the 802.11n MCS rate table query, we can see that 2.4G uses 40MHz other than 20MHz, the
maximum physical layer rate is increased from 144.4Mbp to 300Mbps (in the case of 2SS), which is good.