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In electronic communications, especially in telecommunications, an interference is that which modifies a signal in a disruptive manner, as it travels along a channel between its source and receiver. The term is often used to refer to the addition of unwanted signals to a useful signal. Common examples are:
- Electromagnetic interference (EMI)
- Co-channel interference (CCI), also known as crosstalk
- Adjacent-channel interference (ACI)
- Intersymbol interference (ISI)
- Inter-carrier interference (ICI), caused by doppler shift in OFDM modulation (multitone modulation).
- Common-mode interference (CMI)
- Conducted interference
Radio resource management aims at reducing and controlling the co-channel and adjacent-channel interference.