LTE EARFCN to Frequency Conversion Explained

This document explains the conversion between LTE EARFCN (E-UTRA Absolute Radio Frequency Channel Number) and frequency. It provides formulas, calculators, and tables to facilitate this conversion. We will cover both downlink and uplink EARFCN calculations.

Understanding LTE EARFCN

LTE EARFCN is a number ranging from 0 to 65535 used to identify a specific frequency channel in the LTE spectrum. The relationships between EARFCN and carrier frequency (in MHz) are given by the formulas below.

LTE EARFCN to Frequency Formula

The following equations define the relationship between EARFCN and frequency:

• Downlink Frequency:

  $F_{downlink} = F_{DL\_Low} + 0.1 \cdot (N_{DL} - N_{DL\_Offset})$

• Uplink Frequency:

  $F_{uplink} = F_{UL\_Low} + 0.1 \cdot (N_{UL} - N_{UL\_Offset})$

Where:

• $N_{DL}$ is the downlink EARFCN
• $N_{UL}$ is the uplink EARFCN
• $N_{DL\_Offset}$ is the offset used to calculate downlink EARFCN
• $N_{UL\_Offset}$ is the offset used to calculate uplink EARFCN
• $F_{DL\_Low}$ is the lowest downlink frequency (MHz)
• $F_{UL\_Low}$ is the lowest uplink frequency (MHz)

The following table shows the EARFCN to frequency conversion for both the downlink and uplink directions in an LTE network. You can also use an EARFCN calculator to avoid manual calculations.

EARFCN to Frequency Conversion Table

LTE EARFCN to Frequency Conversion Calculator

Visit following link below to try our LTE calculator to calculate frequency as per LTE EARFCN input provided.

• LTE EARFCN to Frequency Conversion Calculator