scholarly journals ANALISIS PATHLOSS SINYAL LTE DENGAN MODEL COST 231-HATA DI KOTA PADANG

2019 ◽  
Vol 7 (3) ◽  
pp. 176
Author(s):  
Ferry Hidayat ◽  
Delsina Faiza
Keyword(s):  
Large City ◽  
Path Loss ◽  
Propagation Model ◽  
Signal Quality ◽  
Network Cell ◽  
Geographical Structure ◽  
City Regions ◽  
4G Lte ◽  
The Cost ◽  
Data Connection

This research was conducted on the basis of the weakness of the received signal by service users (MS) caused by certain factors such as the geographical structure of a city, many buildings so that the path loss (Path Loss) resulted in data connection failure or call failure. This study serves to determine the comparison of Pathloss values in the Medium-Sized City and Large City Regions in Padang city with a 231-Hata cost propagation model. The measurement method used is the drive test using the Network cell Info LTE application and then analyzed with a model cost 231-Hata, the results of measurements with the RSRP standard research were carried out in the morning and evening for five days. The results showed: In Air Tawar BTS (Large City) by measurement and calculation of the Cost 231 Hata model, compared to the RSRP PT.XL Axiata Padang standard, the signal quality is medium category. While the Lubuk Buaya (Medium-Sized City) BTS is measured, and in the calculation of the Cost 231 Hata model. Compared to the RSRP PT.XL Axiata Padang standard, the signal quality is in Medium category. From the results of measurements and calculations there are differences in pathloss values that are not too significant. This is due to several factors such as building height, road width and geographical structure of the area.Keywords: RSRP, Pathloss, Drive Test, Cost 231 Hata,4G LTE

scholarly journals ANALISIS KUALITAS SINYAL PADA JARINGAN LONG TERM EVOLUTION (LTE) MENGGUNAKAN DATA DRIVE TEST CLUSTER

2019 ◽  
Vol 6 (1) ◽  
pp. 52
Author(s):  
I Wayan Mardika ◽  
Gede Sukadarmika ◽  
Pande Ketut Sudiarta
Keyword(s):  
Correction Factor ◽  
Rapid Development ◽  
Quality Parameters ◽  
Propagation Model ◽  
Signal Quality ◽  
Propagation Models ◽  
Cluster Area ◽  
Comparison Results ◽  
The Cost

The rapid development of cellular communication technology is inseparable from various problems especially on signal quality. In outdoor areas, the performance of eNodeB that is not optimal may cause communication failure. This research was conducted with the drive test on the L_BUNDARANRENON_PL, L_AKABA_PL and L_MYAMIN_CR to obtain signal quality parameters at Renon cluster area. The results of the drive test obtained compared to the simulation using the Atoll radio planning software with the Hatta Cost-231 propagation model and the Standard Propagation Model. From the comparison results, the margin value is used as a correction factor. The comparison results obtained based on the quality of SINR, The result of using the Standard Propagation Model is closer to the drive test measurement results than using Cost-231 Hatta. However, based on the quality of RSRQ, both propagation models yield almost the same results. Here are found that the correction factor for SINR obtained the Cost-231 Hatta propagation model of 6.15 dB and the Standard Propagation Model model of 6.11 dB. While for RSRQ correction factor the margin for both propagation models is -2 dB

scholarly journals Statistical tuning of cost 231 Hata model in deployed 1800mhz GSM networks for a rural environment

2021 ◽  
Vol 39 (4) ◽  
pp. 1216-1222
Author(s):  
E.L. Omoze ◽  
F.O. Edeko
Keyword(s):  
Path Loss ◽  
Propagation Model ◽  
Least Square ◽  
Frequency Assignment ◽  
Rural Environment ◽  
Propagation Models ◽  
Least Square Approach ◽  
Edo State ◽  
The Mean ◽  
The Cost

Radio propagation planning requires the use of propagation models in planning cell size as well as frequency assignment. This paper presents a comparative study of path loss predicted using COST 231 Hata model and ECC-33 model on received signal strength data collected from three deployed GSM networks at 1800MHz in Nigerian Institute for Oil Palm Research environment (NIFOR), Edo State, Nigeria. Based on the Mean Prediction Error (MPE) and Root Mean Square Error (RMSE) values obtained from the comparison, the COST 231 Hata model was tuned using the least square approach. The result obtained after tuning shows that for Network A; MPE andRMSE values reduces to 1.17 dB and 5.5dB. For Network B, MPE and RMSE values reduces to 2.26 dB and 7.16dB. While, for Network C; MPE and RMSE values reduces to 6.21 dB and 10.78dB. The results obtained show that the tuned COST 231 Hata model can be used for radio planning in the study environment as well as other environment with similar terrain profile. Keywords: Propagation model, Path loss, COST 231 Hata model, ECC-33 model, Least square tuning approach, MPE and RMSE

scholarly journals Dynamical Analysis and Optimal Control for a SEIR Model Based on Virus Mutation in WSNs

Mathematics ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 929
Author(s):  
Guiyun Liu ◽  
Jieyong Chen ◽  
Zhongwei Liang ◽  
Zhimin Peng ◽  
Junqiang Li
Keyword(s):  
Optimal Control ◽  
Rapid Development ◽  
Hamiltonian Function ◽  
Propagation Model ◽  
Dynamical Analysis ◽  
Optimal Control Strategy ◽  
Epidemic Dynamics ◽  
Optimization Control ◽  
The Cost ◽  
The Pontryagin Maximum Principle

With the rapid development of science and technology, the application of wireless sensor networks (WSNs) is more and more widely. It has been widely concerned by scholars. Viruses are one of the main threats to WSNs. In this paper, based on the principle of epidemic dynamics, we build a SEIR propagation model with the mutated virus in WSNs, where E nodes are infectious and cannot be repaired to S nodes or R nodes. Subsequently, the basic reproduction number R0, the local stability and global stability of the system are analyzed. The cost function and Hamiltonian function are constructed by taking the repair ratio of infected nodes and the repair ratio of mutated infected nodes as optimization control variables. Based on the Pontryagin maximum principle, an optimal control strategy is designed to effectively control the spread of the virus and minimize the total cost. The simulation results show that the model has a guiding significance to curb the spread of mutated virus in WSNs.

Optimization of Placement of Electronic Data Capture (EDC) Based on 3G Test Drive in Shopping Center Buildings

2018 ◽  
Vol 6 (1) ◽  
pp. 62-66
Author(s):  
Andari Dyah Widowatie
Keyword(s):  
Research Method ◽  
Path Loss ◽  
Shopping Center ◽  
Signal Quality ◽  
Coverage Area ◽  
Test Drive ◽  
A Value ◽  
Cash Payment ◽  
Three Samples ◽  
Link Budget

The problem that often occurs in malls or supermarkets is the use of EDC as a non-cash payment tool for alternative customers. However, the use of EDC machines sometimes experiences problems, namely when customers enter data so that transactions take longer, so this study aims to analyze the optimization of EDC placement in shopping center buildings. This research method is to measure the parameters, namely the RSCP and the closest antenna coverage from the EDC. In this study, three samples were taken, namely Cassa 1, 2 and 3 at Matahari Department Store Malang Town Square. The results of this study were obtained that the Drive Test in the Matahari room showed that Cassa-1, Cassa-2 and Cassa-3 received RSCP with green color which means good. Two of the three tools, namely Drive Test and Mobile can display RSCP with a value that is not too much difference. Especially for EDC is only able to visually display the RSCP and the results of previous calculations, the value of ten antennas which is in the Matahari room has a coverage area below 10 m. And the UG-12 antenna, which is the closest antenna to Cassa-3,  that is outside the antenna coverage, while the UG-08 antenna can still reach the Cassa-3 area. This shows that the placement of EDC has met the requirements to get adequate signal quality and the position of the Cassa table can be moved according to the antenna coverage calculation on the Link budget and Path Loss calculations

scholarly journals Using Bluetooth to Implement a Pervasive Indoor Positioning System with Minimal Requirements at the Application Level

2012 ◽  
Vol 8 (1) ◽  
pp. 73-82 ◽  
Author(s):  
Mario Muñoz-Organero ◽  
Pedro J. Muñoz-Merino ◽  
Carlos Delgado Kloos
Keyword(s):  
Base Stations ◽  
Estimation Accuracy ◽  
Signal Quality ◽  
Positioning System ◽  
Reference Base ◽  
Related Data ◽  
Triangulation Method ◽  
Cellular Signal ◽  
The Cost ◽  
Indoor Positioning System

Different systems have been proposed to estimate the position of a mobile device using Bluetooth based on metrics such as the Radio Signal Strength Indicator (RSSI), the received Bit Error Rate (BER) or the Cellular Signal Quality (CSQ). These systems try to improve the estimation accuracy of the basic and straightforward triangulation method among discovered BT reference base stations at the cost of requiring that the positioning application has access to low level hardware related data (provided by the Host Controller Interface) and obtaining information which is in many cases hardware, and therefore device, dependent. In this paper we design, simulate, implement and validate a Bluetooth positioning system that only requires the ability to handle SDP service records at the application level, achieving mean errors around 1 to 3 meters, improving the basic triangulation method among discovered BT reference base stations.

scholarly journals ANALISIS PROPAGASI PADA KAWASAN KAMPUS UNIVERSITAS NUSA CENDANA PENFUI KUPANG

2019 ◽  
pp. 7-16
Author(s):  
Leonardo F. Lay ◽  
Kalvein Rantelobo ◽  
Beby H. A. Manafe
Keyword(s):  
Communication Systems ◽  
Cost Model ◽  
Path Loss ◽  
Secondary Data ◽  
Propagation Model ◽  
Primary Data ◽  
Acceptance Test ◽  
Test Drive ◽  
Dry Land ◽  
The University

In a telecommunications system, a radio propagation model is needed to do a design, construction, and development of mobile communication systems. Propagation models commonly used are the Okumura-Hatta model and the COST model 231. These models are used to determine an accurate propagation model in a particular area. This study aims to obtain a propagation model on the environmental conditions of dry-land such as the University of Nusa Cendana areas by using Okumura-Hata path loss modeling and COST-231. In this study, the acceptance test drive was carried out at frequencies of 900 Mhz, 1800 Mhz and 1900 MHz using the G-NetTrack application on Telkomsel BTS in the University of Nusa Cendana area with Latitude coordinates -10.156738 and Longitude 123.668422 as well as observing frequencies using Spectrum Analyzer to be used as primary data. The next step is to calculate the received power data as secondary data using the Okumura-Hata path loss calculation and COST-231. Based on primary and secondary data an analysis of which propagation model matches the measurements in the field is carried out. From the propagation analysis, it can be concluded that the propagation model that suits the conditions on the campus area is the Okumura-Hatta model.

scholarly journals MEASUREMENTSBASEDEVALUATION OF PATHLOSSEXPONENTS IN URBAN OUTDOORENVIRONMENTS

2021 ◽  
Vol 9 (03) ◽  
pp. 72-79
Author(s):  
Akohoule Alex ◽  
◽  
Bamba Aliou ◽  
Kamagate Aladji ◽  
Konate Adama ◽  
...  
Keyword(s):  
Mobile Networks ◽  
Average Power ◽  
Path Loss ◽  
Wireless Channel ◽  
Propagation Model ◽  
Strong Impact ◽  
Efficient Design ◽  
Path Loss Exponent ◽  
Outdoor Environments ◽  
The Impact

In wireless networks, propagation models are used to assess the received power signal and estimate the propagation channel. These models depend on the pathloss exponent (PLE) which is one of the main parameters to characterize the propagation environment. Indeed, in the wireless channel, the path loss exponent has a strong impact on the quality of the links and must therefore be estimated with precision for an efficient design and operation of the wireless network. This paper addresses the issue of path loss exponents estimation for mobile networks in four outdoor environments. This study is based on measurements carried out in four outdoor environments at the frequency of 2600 MHz within a bandwidth of 70 MHz. It evaluates the path loss exponent, and the impact of obstacles present in the environments. The parameters of the propagation model determined from the measurements show that the average power of the received signal decreases logarithmically with the distance. We obtained path loss exponents values of 4.8, 3.53, 3.6 and 3.99 for the site 1, site 2, site 3 and site 4, respectively. Clearly the density of the obstacles has an impact on the path loss exponents and our study shows that the received signal decrease faster as the transmitter and receiver separation in the dense environments.

scholarly journals Experimental Research into the Influence of Photodetector Types on Characteristics of Optical Mini-Sticks of Unified Human- Machine Interfaces

2018 ◽  
pp. 137-142
Author(s):  
Sergey A. Golubin ◽  
Alexei N. Lomanov ◽  
Vladimir S. Nikitin ◽  
Valery M. Komarov
Keyword(s):  
Experimental Research ◽  
Test Bench ◽  
Signal Amplitude ◽  
Central Position ◽  
Signal Quality ◽  
Path Diagram ◽  
Photo Detectors ◽  
The Right ◽  
The Cost ◽  
Ray Path

The article provides the results of the experimental research into the influence of different types of photo detectors of digital optical mini­sticks on their transformation function – the useful mini­stick signal as a function of the mini­stick control lever deviation value. The set problem was solved using experimental research methods. Circuits with a photo diode (PIN photodiode PD15– 21B/TR8 manufactured by Everlight company) and circuits with a phototransistor (phototransistor KP2012P3C manufactured by Kingbright company) were studied. An automated test bench was used for the research. The test bench allows setting the mini­stick rotation angle and the value of mini­stick lever deviation from the central position to the left or to the right. The influence on mini­sticks was set by the test bench software. Based on the test results the test bench software plotted a ray path diagram. The mini­stick signal quality was assessed in terms of resolution, accuracy, non­linearity and hysteresis. The following results were obtained in the research. The mini­stick using a photo transistor as a photo detector ensures the output signal amplitude and resolution which exceed those of mini­stick with a photodiode by factor of 3.5 to 4. It allows using mini­sticks with a phototransistor for high­precision control of complex robotic systems, manipulators and aircraft, and for designing joysticks and unified human­machine interfaces on their basis. The indices of precision, non­linearity and hystere sis of both mini­stick types are comparable and meet the basic requirements applied to control devices. Thus, mini­sticks based on phototransistors can be regarded as the best in terms of the signal quality. Taking into consideration the circuitry, overall dimensions and the cost of hardware components which are identical for both photo detectors, mini­sticks based on phototransistors shall be considered to be more advanced switching devices.

scholarly journals Factorial Design Analysis for Localization Algorithms

2018 ◽  
Vol 8 (12) ◽  
pp. 2654
Author(s):  
Joaquin Mass-Sanchez ◽  
Erica Ruiz-Ibarra ◽  
Ana Gonzalez-Sanchez ◽  
Adolfo Espinoza-Ruiz ◽  
Joaquin Cortez-Gonzalez
Keyword(s):  
Statistical Analysis ◽  
Noise Level ◽  
Performance Metrics ◽  
Extreme Values ◽  
Path Loss ◽  
Propagation Model ◽  
Path Loss Exponent ◽  
Localization Algorithms ◽  
Accuracy And Precision ◽  
The Impact

Localization is a fundamental problem in Wireless Sensor Networks, as it provides useful information regarding the detection of an event. There are different localization algorithms applied in single-hop or multi-hop networks; in both cases their performance depends on several factors involved in the evaluation scenario such as node density, the number of reference nodes and the log-normal shadowing propagation model, determined by the path-loss exponent (η) and the noise level (σdB) which impact on the accuracy and precision performance metrics of localization techniques. In this paper, we present a statistical analysis based on the 2k factorial methodology to determine the key factors affecting the performance metrics of localization techniques in a single-hop network to concentrate on such parameters, thus reducing the amount of simulation time required. For this proposal, MATLAB simulations are carried out in different scenarios, i.e., extreme values are used for each of the factors of interest and the impact of the interaction among them in the performance metrics is observed. The simulation results show that the path-loss exponent (η) and noise level (σdB) factors have the greatest impact on the accuracy and precision metrics evaluated in this study. Based on this statistical analysis, we recommend estimating the propagation model as close to reality as possible to consider it in the design of new localization techniques and thus improve their accuracy and precision metrics.

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