EARFCN Calculation
LTE EARFCN Equation
Fdownlink = FDL_Low + 0.1 (NDL - NOffset_DL)
Fuplink = FUL_Low + 0.1 (NUL - NOffset_UL)
The channel raster for LTE is 100kHz for all bands, i.e. the carrier centre frequency must be
an integer multiple of 100kHz. This is represented in the equation by the “0.1” value.
Example:
It is possible to utilize the previous equations to calculate the frequency for a given EARFCN.
In addition, it is possible to calculate the EARFCN for a given frequency with a defined uplink and downlink frequency.
The calculation shown in the figure translates a downlink frequency of 2127.4MHz to an EARFCN equal to 174.
LTE EARFCN Equation
Fdownlink = FDL_Low + 0.1 (NDL - NOffset_DL)
Fuplink = FUL_Low + 0.1 (NUL - NOffset_UL)
The channel raster for LTE is 100kHz for all bands, i.e. the carrier centre frequency must be
an integer multiple of 100kHz. This is represented in the equation by the “0.1” value.
Example:
It is possible to utilize the previous equations to calculate the frequency for a given EARFCN.
In addition, it is possible to calculate the EARFCN for a given frequency with a defined uplink and downlink frequency.
The calculation shown in the figure translates a downlink frequency of 2127.4MHz to an EARFCN equal to 174.
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