Hello friend!
Co-channel interference
Co-channel interference refers to the interference caused by the same carrier frequency of useless signals as the carrier frequency of useful signals, and the interference caused by the receiver that receives useful signals of the same frequency. Currently, frequency reuse is commonly used to improve spectral efficiency. When a cell is continuously split, the serving area of the base station decreases, and the co-channel multiplexing coefficient increases. A large amount of co-channel interference replaces artificial noise and other interference and becomes the main constraint of the cell system. In this case, the mobile radio environment changes from a noise-limited environment to an interference-limited environment. When the C/I ratio of co-channel interference is less than the specified value, the call quality of the MS is affected. In severe cases, call drops may occur or MSs cannot set up normal calls.
Adjacent-channel interference
Adjacent-channel interference refers to the interference caused by the power of the adjacent channel of the interfering station falling into the passband of the receiver of the adjacent channel. If the neighboring cell has channels adjacent to the working channel of the local cell due to frequency planning, or the coverage area of the BTS cell is larger than the designed coverage area, interference may occur to the adjacent channels. When the C/I ratio of adjacent channels is less than a certain value, the call quality of the MS is affected. In severe cases, call drops occur or MSs cannot set up normal calls.
Hope it helps you!
