= Adjacent-channel interference
{wiki=Adjacent-channel_interference}
Adjacent-channel interference refers to the degradation of a communication signal caused by signals from nearby channels or frequency bands. This type of interference is particularly relevant in radio frequency (RF) communications, such as in telecommunications, broadcasting, and wireless networking. In scenarios where multiple channels are used, especially those that are closely spaced in frequency, signals can spill over into adjacent channels due to various factors such as spectral overlap, transmitter non-linearity, and inadequate filtering.
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