Co-Channel Interference

Whenever one transmitter’s signal overlaps another on a frequency or channel, the signals interfere with each other. Interference can be described by the way the signals overlap. For example, co-channel interference occurs when two or more transmitters use the same channel. In Figure 3-1, Transmitters A and B are both transmitting an RF signal on channel 6 in the 2.4-GHz band.

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Figure 3-1 Co-Channel Interference.

Because the two 802.11 transmitters are using the same channel, their signals completely overlap and the whole 22-MHz channel bandwidth is affected. This might not be a problem if the transmitters are not sending ...

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