Modified hata model hatas formula is restricted to a frequency range of 100 to 1500 mhz, distances between 120 km and base station effective heights between 30 200m. Hataokumura model computer analysis for path loss determination. Lecture 7okumura and hata macroscopic propagation models. The proposed model integrates the hata okumura ho largescale propagation model with a wavelet neural model. The hata model for urban areas also known as the okumura hata model, is a widely used propagation model for predicting path loss in urban areas. Compared with free space model in which frequency and separation distance are the only contributors for pathloss, more accurate estimation can be achieved when okumurahata. On the basis of extensive measurements carried out in tokyo at frequencies in the range of 100 mhz to 1920 mhz, okumura et al. Hataokumura model the hataokumura model is best suited for large cell coverage distances up to 100 km and it can extrapolate predictions up to the 2ghz band. The okumura s model is applicable to frequencies within the range of 150 to 1920mhz, transmitter height of 30 m to 200 m, link distance of 1 km to 20 km, mobile station ms height of 1 m to 10 m. The following matlab project contains the source code and matlab examples used for okumura hata model. Okumura hata is a radio propagation model that was built using the data collected in the city of tokyo.
The hataokumura, the cost231 hata, the sui, and the ericsson model underestimates the pathloss. On the other hand, deterministic models are very accurate. Jul 01, 2016 cost 231hata model extends the validity region of okumurahata model to 1500 2000 mhz range which encompass the 1800 mhz frequency which is used for 2g and 3g cellular systems. There are many models that predict rf propagation but the most known is the hataokumura model. The model served as a base for the hata model okumura model was built into three modes. Hata s model has been derived from curves plotted by okumura. The hata model is empirical formulation of graphical path loss pl data. Calculations the hart of every rf simulation tool is the prediction model. These include hata model, okumura model, cost231 hata model. There are many empirical models for calculating the path loss such as okumura model, hata model, cost231 model and sui model. With the aim to make this method easy to apply, hata 2 defined a series of empirical relationships describing the graphical method proposed by okumura. Cost231 hata extension the cost231 hata model extends the hata cellular models another 500mhz up to 2000mhz so is well suited to gsm1800 in urban areas. At the end of this project, complete reports on designing simulations using matlab will be produced. The hata model was derived as a numerical fit to the propagation curves published by okumura.
This chapter is aimed at providing the ideas behind the simulation of some of the subtopics in largescale propagation models, such as, free space path loss model, two ray ground reflection model, diffraction loss model and hata okumura model. Based on your location, we recommend that you select. Antenna height and carrier frequency suburban, quasiopen space, open space, or hilly terrain areas diffraction loss due to mountains sea or lake areas road slope hata derived empirical formulas for the median path loss l50 to fit okumura curves. Pdf comparison of empirical propagation path loss models. Radio mobile rf propagation simulation software calculations. Okumurahata propagation model tuning through composite. The results shown in the paper are for propagation path loss considering okumurahata model and walfischikegami model in the implementation of a digital.
The model for urban areas was built first and used as the base for others the okumura hata model also has two more varieties for propagation in suburban areas and open areas. This page describes okumura hata model basics, hata model formula and cost231 extension of okumura hata model. Hata okumura model the hata okumura model is best suited for large cell coverage distances up to 100 km and it can extrapolate predictions up to the 2ghz band. Also, you can plot the radio coverage and propagation loss.
This chapter is aimed at providing the ideas behind the simulation of some of the subtopics in largescale propagation models, such as, free space path loss model, two ray ground reflection model, diffraction loss model and hataokumura model. Okumurahata is a radio propagation model that was built using the data collected in the city of tokyo. Mar 21, 2015 hata model does not go beyond 1500 mhz while okumura provides support for up to 1920 mhz hata model for suburban area the hata model for suburban areas, also known as the okumurahata 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. The model incorporates the graphical information from okumura. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The model is ideal for using in cities with many urban structures but not many tall blocking structures.
Optimization of hata pathloss model using terrain roughness. The main objective in this paper is to provide a guide line for pathloss estimation analysis using okumurahata model. The hata model is a radio propagation model for predicting the path loss of cellular transmissions in exterior environments, valid for microwave frequencies from 150 to 1500 mhz. Okumura hata model formula cost231 extension of hata model. Pathloss determination using okumurahata model and. Hata model simulation file exchange matlab central. Modifications were made to improve accuracy relative to the okumura curves 1. The original okumura model for urban areas is a radio propagation model that was built using the data collected in the city of tokyo, japan. There are many models that predict rf propagation but the most known is the hata okumura model. Comparison of okumura, hata and cost231 models on the. The okumurahata model has been used extensively both in europe and north america for cellular systems. Comparision between okumura hata and cost 231 file.
Hybrid calculation method valid in the frequency range from 150 mhz to 2 ghz. C is 0 in small and mediumsized cities urban areas, and suburban areas. Choose a web site to get translated content where available and see local events and offers. The proposed model integrates the hataokumura ho largescale propagation model with a wavelet neural model. In this paper a software application for the simulation of the hata okumura model is shown. The sui, and the cost231 hata sho w small deviation from measurement value s. With this application, you can obtain cost231hata and okumurahata values. Frequency range up to 3000 mhz, and study distance up to 100km are increased by modifications.
Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Contribution to the performance of mobile radio systems by. Hatas propagation model hata model was based on okumuras field test results and predicted various equations for path loss with different types of clutter. This model has been proven to be accurate and is used by computer simulation tools.
The model results, obtained through simulations, show that the wavelet neural model forecasts with a high degree of precision, which is consistent with the observed behavior in experiments carried out in wireless systems of this type. The main result of okumuras work was a set of curves, giving the median attenuation, relative to free space, as a function of. The okumuras model is applicable to frequencies within the range of 150 to 1920mhz, transmitter height of 30 m to 200 m, link distance of 1 km. As mentioned earlier, semiempirical models are based on both empirical data and deterministic aspects. The model is ideal for using in cities with many urban structures, but without many tall blocking structures.
This will ask for antenna heights then ask u for the frequency bandthen it will use the okumura model and give u the simulated output cite as debaraj rana 2020. Apr 02, 20 issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Cost 231hata model extends the validity region of okumurahata model to 1500 2000 mhz range which encompass the 1800 mhz frequency which is used for 2g and 3g cellular systems. The okumura model is a radio propagation model that was built using the data collected in the city of tokyo, japan. It has become a standard for system planning in modern mobile radio systems. A model to determine the propagation losses based on the.
Okumura model simulation file exchange matlab central. The hata okumura, the cost231 hata, the sui, and the ericsson model underestimates the pathloss. Mathworks is the leading developer of mathematical computing software for engineers and scientists. Okumura hata model in matlab download free open source. Pdf pathloss determination using okumurahata model and. Results and discussions after applying the linear regression model to the data collected at the city of annaba, we obtained the results below. It is important to have software tools to simulate the signal strength in 3d environment in order to improve the analysis of the communication system.
Cost231hata extension the cost231hata model extends the hata cellular models another 500mhz up to 2000mhz so is well suited to gsm1800 in urban areas. Pathloss determination using okumurahata model for rourkela by ashish ekka has been carried out under my supervision in partial fulfillment of the requirements for the degree of. In this paper a software application for the simulation of the hataokumura model is shown. Propagation over plane earth wireless communication. On the other hand, the rmse tuned okumurahata model has a higher rmse value of 5.
Pathloss determination using okumurahata model and cubic. Hata okumura model computer analysis for path loss determination. With this application, you can obtain cost231 hata and okumura hata values. On the other hand, the rmse tuned okumura hata model has a higher rmse value of 5. However, there are some aspects of its application that a user has to be aware of. Jan 01, 2017 hata okumura model has specific model versions for urban, suburban and rural areas. How to convert pdf to word without software duration. The limitations on hata model due to range of test results from carrier frequency 150mhz to 1500mhz, the distance from the base station ranges from 1km to 20km, the. This model is considered to be among the simplest and best in terms of accuracy in path loss prediction. The results by zone we had the curve below representing, the real measures, the okumura hata model, the model k factors the result obtained by implementing the linear regression.
The hata model for urban areas also known as the okumurahata model, is a widely used propagation model for predicting path loss in urban areas. Hata okumura model computer analysis for path loss determination at 900mhz for. Some of the examples include ray tracing and ikegami model. Hatas model has been derived from curves plotted by okumura. This model is an extension of the okumurahata model to cover a wide range of frequencies between 0. Mathematical theory and modeling issn 22245804 paper issn 22250522 online vol. Pathloss determination using okumurahata model and spline. Hata implementation of the okumuras model can be found in almost every rf propagation tool in use today. Sep 21, 20 claronet okumura hata jimakawary grosso. Pathloss estimation for wireless cellular networks using. All these models have certain limitations such as the frequency of.
Pdf software application for hataokumura model edgar. Based on the okumurahata method, the model makes a correction for diffraction losses. It is an empirical formulation based on the data from the okumura model, and is thus also commonly referred to as the okumurahata model. Hata model does not go beyond 1500 mhz while okumura provides support for up to 1920 mhz hata model for suburban area the hata model for suburban areas, also known as the okumurahata 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. Mathworks is the leading developer of mathematical computing software for engineers. Comparative evaluation of the pathloss prediction performance. Essentially, in all the three performance measures used, the composite function of prediction residual based tuning approach performed better than the rmse based tuning approach. On the other hand, both the pathloss predicted by the mean elevation tuned hata model and the pathloss predicted by the standard deviation of elevation tuned hata model have the same rme of 6. Citeseerx software application for hataokumura model. The results show that the untuned hata model has a rmse of 44. Matlab code for simulation of okumura model part 49. The cost 231 model has been recommended by the european telecommunication standard institute etsi for use in personal communication networkpersonal communication system pcnpcs. The model provides good path loss estimates for large urban cells 1 to 20 km, and a wide range of. Then he applied several correction factors for other propagation conditions, such as.
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