Assessment and Development of Path Loss Propagation Model for Ikire Metropolis, Nigeria (original) (raw)
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The study was based on the comparative analysis of radio propagation models for Global System for Mobile Communications at 900MHz. Drive test analyses were carried out from two selected terrains in Rivers State namely GRA Phase II and Aggrey Road classified as urban and suburban areas respectively, to evaluate the best propagation model for the study area. The data obtained were used to compare the various prediction models namely; Cost 231, Okumura-Hata and ECC-33. Mean path loss values of 115.16dB for Okumura-Hata and 117.79dB for COST 231 and 280.88dB for ECC-33 respectively were predicted in the urban environment. Mean path loss values of 115.16dB, 114.76dB and 314.84dB were predicted by Okumura-Hata, Cost 231and ECC-33 models respectively in the suburban environment. ECC-33 over estimated path loss and gave the highest prediction in both environments. Okumura-Hata model showed better performance in urban while COST 231 performed better in the suburban environment. Okumura-hata and COST 231 models are recommended for deployment in urban and suburban environments respectively.
Path Loss Modelling of UHF Radio Wave Propagation in Ado-Ekiti, Nigeria
2019
In order to achieve optimal performance of a wireless communication system in any given environment, empirical path loss models are used to predict the received signal strength and power. We present an assessment of the quality of UHF signal reception and development of path loss model in the UHF range for the city of Ado-Ekiti in Nigeria, using the signal field strength of the broadcast signal of Ekiti State Television (EKTV). Measurements of received signal field strength within and around the city were carried out and analyzed, from which path loss models in the UHF range were developed for Ado-Ekiti using linear regression model – one being a general model, and the other is for the western region of Ado-Ekiti with irregular terrain. The result of the field strength measurements from EKTV in comparison with ITU recommendation for analogue terrestrial television service in band V shows that the quality of reception within Ado-Ekiti metropolis is good. Also, path loss prediction fo...
Path loss Characterization of Wireless Propagation for South – South Region of Nigeria
This paper presents statistical path loss models derived from experimental data collected in Port Harcourt in South-South region of Nigeria from 10 existing microcells operating at 876 MHz. The results of the measurements were used to develop path loss models for the urban (Category A) and the suburban (Category B) areas of Port Harcourt. The measurement results showed that the Pathloss increases by 35.5dB and 25.7dB per decade in the urban (Category A) and suburban (Category B) areas respectively. Variations in path loss between the measured and the predicted values from the Okumura-Hata model were calculated by finding the mean square errors (MSE) to be 10.7dB and 13.4dB for the urban and suburban terrains respectively. These variations (errors) were used to modify the Okumura-Hata models for the two terrain categories. comparing the modified Hata model with the measured values for the two categories showed a better result. The developed statistical Pathloss models or the modified Hata models can be used in the urban and suburban areas of South-South Nigeria.
The characteristic effects of propagation environment on wireless communication signals are significant on the transmitted and received signal quality. The study focused on investigative analysis of the effects of propagation environment on the wireless communication signals within some geographical domains in Port Harcourt, River State. Field measurements were carried out in some selected areas namely GRA phase II and Aggrey Road categorized as urban and Sub urban areas respectively using Sony Ericsson (W995) Test Phone and GPS receiver (BU353). The analyses were based on linear regression (mean square error) approach. The computed path loss exponents and standard deviation based on the empirical analyses conducted for urban and suburban environments are 3.57dB, 2.98dB and 19.6, 13.2, respectively. The results obtained were used to compare the performance of the various existing path loss prediction models such as Okumura-Hata, Cost 231 and ECC-33. Okumura-Hata model showed better performance in urban environment while Cost 231 performed better in rural environment. They study therefore recommends the deployment of Okumura-Hata model in urban, while Cost 231for suburban study areas.
European …, 2012
An understanding of the radio propagation characteristics of an environment is a necessary condition for effective radio network planning. This becomes serious issues today with the ever-increasing demand for radio channels following explosion in demand for wireless services. In this work, the authors reviewed some of the existing propagation models and graphically depict them over some widely used frequencies in mobile communication. A drive test was conducted in Kano State, Nigeria and the data obtained depicted graphically for purpose of comparison. The analysis of results shows that the mean path loss values 137.7dB and 138.7dB respectively for HATA and COST 231 were observed. It is note-worthy that COST 231 showed an increase of 1.1dB/100MHz and 1dB/200m over HATA. The mean signal level was found to be -72.06dBm, -76.57dBm, -47.41dBm, -74.67dBm for HATA, COST 231, Walfisch Ikegami and measured respectively and mean square error values of 0.071dB, 0.038dB and 0.7dB for HATA, COST 231 and Walfisch Ikegami respectively. Therefore, it was concluded that COST 231 model would be more suitable for use in the Kano environment from our study.
Assessment Of Some Basic Empirical Path Loss Model For Vhf And Uhf In Kano City Nigerian Environment
International Journal of Advanced Networking and Applications
High demands of wireless data service are increase globally and this makes Empirical path loss models of great interest. Path= loss= Propagation= models= are= useful= as= predictive= tools= for= receiving= signal= intensity= at= any= particular= distance= between= the= transmitter= and= the= receiver= at= that= particular= point,= it= is= important= in= many= ways,= such= as= Base= Transceiver= Stations= (BTS)= location,= radio= coverage= area= estimation,= frequency= assignments,= interference= analysis,= optimization= transfer,= power= adjustment= and= connection= budget. This paper presents an assessments and evaluation of five widely used empirical path loss models in predicting signal in the VHF and UHF bands in Kano City, Nigeria. In the work, five error analysis methods are used and a large scale field strength measurement was conducted within Kano State metropolis using specially configured dual band handset, GPS and GENEX® Probe software, data samples were collected along a predefined route Measurement= of= the= drive= test= was= carried= out= in= Kano, Nigeria= to= obtain= path= loss= data= from= various= base= station= transmitters= at= varying= distances. The routes covered are Zaria highway through eastern bypass road Dan Agundi to Bayero University, Kano old site, Hotoro GRA, Badawa Layout to SabonGari along MM way and Kabuga to Bayero University New site.It was found that HATA model provides the best results in terms of minimum mean Error, RMSE and SCRMSE. HATA model has the best fit which falls within the acceptable range of ±10dB.
Journal of Academia and Industrial Research (JAIR), 2015
This study provides an extension of path loss prediction in urban city of Imo State of Nigeria with a measured set of propagation at 910 MHz band. This study discusses and implements Okumura, Hata, cost-231, walfisch-Ikegami model, Sagami-Kuboi model even though Hata and cost-231 Hata models are extensively used in path loss analysis for GSM and CDMA systems comparison with the set results developed. It is of utmost importance that this study guides network designers in mobile cellular propagation and inculcates an accurate method of designing, deploying and managing of their network for proper attenuation.
Analytical Comparison of Path Loss Models for Radio Wave Propagation over Yenagoa–Southern Nigeria
Asian journal of physical and chemical sciences, 2023
Using propagation models helps with communication system planning and maximizes the use of the radio spectrum, a limited natural resource. Here is a comparative analysis between some propagation models and actual measurements from Yenagoa, Southern Nigeria. Electric field strength measurements made during drive tests for two television transmitters operating at 210.25 MHz and 577.10 MHz make up the experimental data. Analytical comparisons were made between verified predictions for the free space, Okumura, and Hata models and measured data. The results demonstrate that these empirical models fail to take into account Yenagoa's actual terrain profile for television broadcast. The Okumura model is the best fit, with ideal values for root mean square error (RMSE) of 34.9136 and 33.2841 and average relative error of 0.13212 and 0.4327 for 210.25 MHz and 577.10 MHz, respectively. However, if the Okumura model is tailored for Yenagoa to improve electric field strength prediction and coverage estimation, better results can be attained.
One of the underlying difficulties with the application of a predicting path loss models for any environment is that no two areas are identical in the composition of the building and terrain. Many research activities, such as simulation and system design, need a model of the channel under study. This research attempts to investigate the most effective propagation model in South-South part of Nigeria. Two Global Systems for Mobile Communications (GSM) base stations operating at 900MHz and 1800MHz bands were used for the experiment in a typical urban area. The field measurement results were compared with S U I model, Ericsson model, Friis model and Walficsh-Bertoni model for urban area. The results obtained indicate the least variation with Walficsh-Bertoni model for urban area.
Determination of propagation pathloss in an urban area, Ilorin, Nigeria
One of the major parameters of interest in the analysis of radio wave propagation of mobile communication is the propagation path loss characteristics of an environment. This paper presents the determination of propagation path loss characteristic of power received at 900MHz in an urban terrain, Ilorin town, Nigeria. A Spectrum Analyzer was used to take measurements of signal strength from fixed transmitting antenna (base-station) at different distance using twelve different environments which reflect a good representation of Ilorin metropolis. The power received was analyzed to determine the propagation path loss exponent and path loss characteristics of the city investigated. The path loss exponent computed for Ilorin from this research is 2.60 which justify the low quality of GSM signal receive and sometimes network failure experience in the studied area. Suggestions and recommendations made on how to improve the quality of the GSM services in Ilorin metropolis.