What Is the Hata-Okumura Cellular Propagation Path Loss Calculator?
The Hata model is an empirical formulation of the graphical path loss data provided by Yoshihisa Okumura.
How Does the Hata-Okumura Cellular Propagation Path Loss Calculator Work?
Combines base station height advantage with distance power law exponent (~3.5 in urban areas) and antenna correction.
Hata-Okumura Cellular Propagation Path Loss Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
L_{ ext{urban}} = 69.55 + 26.16log_{10}f - 13.82log_{10}h_b - a(h_m) + [44.9 - 6.55log_{10}h_b]log_{10}d
Empirical regression model derived from extensive Okumura field measurements.
How to Use the Hata-Okumura Cellular Propagation Path Loss Calculator
- Input carrier frequency, tower height, mobile receiver height, and distance in kilometers.
Step-by-Step Example Calculation
900 MHz Cellular Macrocell in Urban Environment
Input Values:
carrierFrequencyMhz:900
baseStationHeightM:45
mobileAntennaHeightM:1.5
distanceKm:4
Worked Steps: Predicts median path loss of 127.2 dB at 4 km distance.
Understanding Your Result
Provides median path loss in decibels used to evaluate cell radius and coverage boundaries.
Factors That Affect the Result
- Building density, street canyon orientation, and foliage density cause deviations from median predictions.
When Should You Use This Calculator?
- Cellular 2G/3G/4G/5G macrocell site acquisition, link budget sizing, and frequency reuse planning.
Assumptions & Limitations
- Valid for distances 1–20 km and frequencies up to 1500 MHz (COST 231 extends to 2000 MHz).
Frequently Asked Questions
Calculation Accuracy & Reference Note
Standard ITU-R empirical land mobile propagation model.