Essay On Intercell Interference

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Intercell interference Intercell interference is one of the biggest factor for performance degradation or for lower mobile capacity in wireless network. When two users in different cells attempt to use the same frequency band at the same point of time, then intercell interfer-ence occurs. The base stations in one cell does not have the information about the resource being used by other users at the edge of another cell. Intercell interference problem is mostly predominant for two users using the same frequency band located at the cell edges. User located close to the base station usually has to transmit signals with low power and hence, does not cause high interference to another user using same frequency band in another cell. However, users located at the cell edge usually have to use high transmit power in order to overcome the path loss factor. These signal transmitted with high power causes interference to another user in another cell using the same frequency band. The base stations in one cell does not have the information about the resource being used …show more content…

With FRF 1, every cell can use the whole avail-able spectrum which causes more intercell interference. Some Intercell interference coordina-tion (ICIC) such as Fractional frequency reuse (FFR)[21] has been used to reduce intercell in-terference level. Recent cellular networks implement heterogeneous cellular network (HetNet) in which small cells such as pico cells, femto cells are deployed to enhance the coverage and improve cell edge performance. The intercell interference in HetNetis different from the ho-mogeneous network having only macro cells[22]. Some schemes for ICIC such as almost blank subframe[23] has been developed to mitigate intercell interference. Also , Coordinated multipoint transmission (CoMP) is supported in 4G to mitigate the intercell

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