The Hata Model for Open Areas, also known as the Okumura-Hata model for being a developed version of the Okumura Model

Okumura Model

The Okumura model for Urban Areas is a Radio propagation model that was built using the data collected in the city of Tokyo, Japan. The model is ideal for using in cities with many urban structures but not many tall blocking structures. The model served as a base for the Hata Model.Okumura model...

, is the most widely used model in radio frequency propagation for predicting the behavior of cellular transmissions in open areas. This model incorporates the graphical information from Okumura model and develops it further to better suit the need. This model also has two more varieties for transmission in Urban Areas

Hata Model for Urban Areas

In wireless communication, the Hata Model for Urban Areas, also known as the Okumura-Hata model for being a developed version of the Okumura Model, is the most widely used radio frequency propagation model for predicting the behaviour of cellular transmissions in built up areas...

 and Suburban Areas

Hata Model for Suburban Areas

The Hata Model for Suburban Areas, also known as the Okumura-Hata model for being a developed version of the Okumura Model, is the most widely used model in radio frequency propagation for predicting the behavior of cellular transmissions in city outskirts and other rural areas...

.

Hata Model for open areas predicts the total path loss

Path loss

Path loss is the reduction in power density of an electromagnetic wave as it propagates through space. Path loss is a major component in the analysis and design of the link budget of a telecommunication system....

 along a link of terrestrial microwave

Microwave

Microwaves, a subset of radio waves, have wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300 MHz and 300 GHz. This broad definition includes both UHF and EHF , and various sources use different boundaries...

 or other type of cellular communications. And is a function of transmission frequency and the median path loss in urban areas.

Applicable to/under conditions

This particular version of Hata model is applicable to the transmissions in open areas where no obstructions block the transmission link

This model is suited for both point-to-point and broadcast

Broadcasting

Broadcasting is the distribution of audio and video content to a dispersed audience via any audio visual medium. Receiving parties may include the general public or a relatively large subset of thereof...

 transmissions.

Mathematical formulation

Hata model for open areas is formulated as,



Where,

• L_O = Path loss in open area. Unit: decibel
  Decibel
  The decibel is a logarithmic unit that indicates the ratio of a physical quantity relative to a specified or implied reference level. A ratio in decibels is ten times the logarithm to base 10 of the ratio of two power quantities...
  
   (dB)
• L_U = Path loss in urban area. Unit: decibel (dB)
• f = Frequency of transmission. Unit: megahertz(MHz).

Further reading

• Introduction to RF propagation, John S. Seybold, 2005, John Wiley and Sons Inc.

See also

• Hata Model for Suburban Areas
  Hata Model for Suburban Areas
  The Hata Model for Suburban Areas, also known as the Okumura-Hata model for being a developed version of the Okumura Model, is the most widely used model in radio frequency propagation for predicting the behavior of cellular transmissions in city outskirts and other rural areas...
  
  
• Hata Model for Urban Areas
  Hata Model for Urban Areas
  In wireless communication, the Hata Model for Urban Areas, also known as the Okumura-Hata model for being a developed version of the Okumura Model, is the most widely used radio frequency propagation model for predicting the behaviour of cellular transmissions in built up areas...
  
  
• Okumura Model for Urban Areas
  Okumura Model
  The Okumura model for Urban Areas is a Radio propagation model that was built using the data collected in the city of Tokyo, Japan. The model is ideal for using in cities with many urban structures but not many tall blocking structures. The model served as a base for the Hata Model.Okumura model...
  
  
• COST Hata model
• Radio propagation model
  Radio propagation model
  A radio propagation model, also known as the Radio Wave Propagation Model or the Radio Frequency Propagation Model, is an empirical mathematical formulation for the characterization of radio wave propagation as a function of frequency, distance and other conditions...