Link Budget Calculator

Scenario Inputs

Preset

FR1 mid-band 5G NR — typical urban macro, 100 MHz BW.

Frequency (MHz)

Bandwidth (MHz)

TX Power (dBm)

TX Gain (dBi)

RX Gain (dBi)

Noise Figure (dB)

Rain Loss (dB)

Penetration (dB)

Fade Margin (dB)

Distance (km)

EIRP

66.0dBm

Path Loss

104.9dB

Rx Power

-54.9dBm

Noise Floor

-87.0dBm

SNR

32.1dB

Modulation

256-QAM 5/6

Shannon Capacity

1.07Gbps

Link Status

Excellent

Formulas Used

FSPL(dB) = 32.44 + 20·log₁₀(d_km) + 20·log₁₀(f_MHz) → 104.90 dB

Noise Floor = −174 + 10·log₁₀(BW_Hz) + NF → -87.00 dBm

Rx Power = EIRP − ΣLoss + RxGain → -54.90 dBm

SNR = Rx − Noise → 32.10 dB

C = BW · log₂(1 + SNR_lin) → 1.07 Gbps

Simplified planning model. Adjust penetration, rain, and fade margins per propagation environment. For mmWave/THz, increase rain & oxygen absorption losses; for indoor THz use very short distances and high antenna gains.