Discover the essentials of GSM network planning with our online calculator. Easily determine Absolute Radio Frequency Channel Numbers (ARFCN), transmit/receive frequencies, and spectrum allocation for various GSM bands. Perfect for engineers and students analyzing mobile communication systems.
Formula:
The core formula for converting Absolute Radio Frequency Channel Number (ARFCN) to frequency in GSM networks depends on the specific frequency band. For example, in P-GSM 900:
Downlink Frequency (DL) = 935 + 0.2 * ARFCN (MHz)
Uplink Frequency (UL) = 890 + 0.2 * ARFCN (MHz)
Where:
- ARFCN: Absolute Radio Frequency Channel Number (a unique channel identifier).
- 0.2: Represents the 200 kHz channel spacing in GSM.
- 935 MHz / 890 MHz: Base frequencies for the downlink and uplink bands, respectively, in P-GSM 900.
Similar formulas with different base frequencies and channel separations apply to other GSM bands like E-GSM 900, DCS 1800, PCS 1900, and GSM 850.