Localizing Jammer for Indoor Mobile Communication Networks

2014 ◽  
Vol 701-702 ◽  
pp. 1063-1066
Author(s):  
Supachai Phaiboon ◽  
Arunee Chatwaranon
Keyword(s):  
Communication Networks ◽  
Path Loss ◽  
Signal Strength ◽  
Indirect Measurement ◽  
Propagation Path ◽  
Strength Measurement ◽  
The Real ◽  
Evaluation Feedback ◽  
Hearing Range ◽  
Mobile Communication Networks

This paper proposes an experimental study for localizing radio jammers in a multi floors building. We performed signal strength measurement to find propagation path loss characteristics in the building. Then communication nodes around the existing jammers were classified in order to determine a set of boundary nodes. The propagation path losses between the real jammers and the boundary nodes are evaluated by a vector pointer namely, the evaluation feedback metric, ez, to find the real jammer location. The proposed algorithm was validated via an indirect measurement called hearing range. The results demonstrate that our approach provides an effective method for jamming localization.

scholarly journals Propagation Path Loss Modeling and Outdoor Coverage Measurements Review in Millimeter Wave Bands for 5G Cellular Communications

2018 ◽  
Vol 8 (4) ◽  
pp. 2254 ◽  
Author(s):  
Mohammed B. Majed ◽  
Tharek A. Rahman ◽  
Omar Abdul Aziz
Keyword(s):  
Communication Networks ◽  
Millimeter Wave ◽  
Wide Spectrum ◽  
Path Loss ◽  
Separation Distance ◽  
Propagation Path ◽  
Delay Spread ◽  
Propagation Time ◽  
60 Ghz ◽  
Rms Delay Spread

The global bandwidth inadequacy facing wireless carriers has motivated the exploration of the underutilized millimeter wave (mm-wave) frequency spectrum for future broadband cellular communication networks, and mmWave band is one of the promising candidates due to wide spectrum. This paper presents propagation path loss and outdoor coverage and link budget measurements for frequencies above 6 GHz (mm-wave bands) using directional horn antennas at the transmitter and omnidirectional antennas at the receiver. This work presents measurements showing the propagation time delay spread and path loss as a function of separation distance for different frequencies and antenna pointing angles for many types of real-world environments. The data presented here show that at 28 GHz, 38 GHz and 60 GHz, unobstructed Line of Site (LOS) channels obey free space propagation path loss while non-LOS (NLOS) channels have large multipath delay spreads and can utilize many different pointing angles to provide propagation links. At 60 GHz, there is more path loss and smaller delay spreads. Power delay profiles PDPs were measured at every individual pointing angle for each TX and RX location, and integrating each of the PDPs to obtain received power as a function of pointing angle. The result shows that the mean RMS delay spread varies between 7.2 ns and 74.4 ns for 60 GHz and 28 GHz respectively in NLOS scenario.

scholarly journals Determination of an Outdoor Path Loss Model and Signal Penetration Level in Some Selected Modern Residential and Office Apartments in Ogbomosho, Oyo State, Nigeria

2018 ◽  
pp. 1-25
Author(s):  
V. O. A. Akpaida ◽  
F. I. Anyasi ◽  
S. I. Uzairue ◽  
A. I. Idim
Keyword(s):  
Building Materials ◽  
Path Loss ◽  
Signal Strength ◽  
Base Stations ◽  
Propagation Path ◽  
Loss Model ◽  
Path Loss Model ◽  
Path Loss Exponent ◽  
Received Power

This article involves the site specific determination of an outdoor path loss model and Signal penetration level in some selected modern residential and office apartments in Ogbomosho, Oyo State. Measurements of signal strength and its associated location parameters referenced globally were carried out. Propagation path loss characteristics of Ogbomosho were investigated using three different locations with distinctively different yet modern building materials. Consequently, received signal strength (RSS) was measured at a distance d in meters, from appropriate base stations for various environments investigated. The data were analyzed to determine the propagation path loss exponent, signal penetration level and path loss characteristics. From calculations, the average building penetration losses were, 5.93dBm, 6.40dBm and 6.1dBm outside the hollow blocks B1, solid blocks B2 and hollow blocks mixed with pre cast asbestos B3, buildings respectively with a corresponding path loss exponent values of, 3.77, 3.80 and 3.63. Models were developed and validated, and used to predict the received power inside specific buildings. Moreover, the propagation models developed for the different building types can be used to predict the respective signal level within the building types, once the transmitter – receiver distance is known. The readings obtained from the developed models were compared with both the measured values and values computed using some existing models with satisfactory results obtained.

The Development of a GPS Based RF Signal Strength Measurement System

2013 ◽  
Vol 309 ◽  
pp. 294-301
Author(s):  
Méhes László
Keyword(s):  
Wireless Communication ◽  
Communication Networks ◽  
Measurement System ◽  
Signal Strength ◽  
Wireless Communication Networks ◽  
Strength Measurement ◽  
Gps Positioning ◽  
Wireless Nodes ◽  
Rf Signal

Nowadays the wireless communication networks are the bigger part in the communication area. It is very important to choose the best place for the wireless nodes. To support the placement of these devices I wanted to create a signal strength measurement system that I implemented on ZigBee platform with GPS positioning.

scholarly journals Comparative Analysis of Signal Strength of Some Cellular Networks in Port Harcourt, Nigeria.

2018 ◽  
Vol 2 (6) ◽  
Author(s):  
Bodunrin Isa Bakare ◽  
T. E. Ngeri ◽  
Sunny Orike
Keyword(s):  
Comparative Analysis ◽  
Cellular Networks ◽  
Communication Networks ◽  
Measurement Data ◽  
Path Loss ◽  
Signal Strength ◽  
Received Signal Strength ◽  
Least Square ◽  
Port Harcourt ◽  
Rivers State

This paper presents a comparative analysis of the Received Signal Strength (RSS) measurement of some cellular networks in Port Harcourt, Nigeria. Measurements were carried out using Radio Frequency Signal Tracker to determine received signal of three selected Global System for Mobile Communication networks (MTN, Airtel and Globalcom) at five strategic locations (Borokiri, Old Government Residential Area, Rivers State University, Ikwerre Road and Aba Road) in Port Harcourt, Rivers State. From the results obtained it shows that in Borokiri MTN has the highest received signal strength of -61.9dBm, Old GRA Airtel has the highest received signal strength of -61.3dBm, RSU and Ikwerre Road Globalcom has the highest received signal strength of -68.3dBm and -64.9dBm respectively while for Aba Road MTN has the highest received signal strength of -63.0dBm. In all the measurements, the results were analyzed using least square method and standard deviation to approximate the measurement data and path loss model was developed using ordinary least square regression technique.

scholarly journals Development of A Propagation Path Loss Prediction Model for Mobile Communication Networks Deployment in Osogbo, Nigeria

2017 ◽  
Vol 2 (11) ◽  
pp. 13 ◽  
Author(s):  
Hammed Lasisi
Keyword(s):  
Prediction Model ◽  
Communication Networks ◽  
Prediction Models ◽  
Path Loss ◽  
Propagation Distance ◽  
Propagation Path ◽  
Telecommunication System ◽  
Analysis And Design ◽  
Loss Prediction ◽  
Path Loss Prediction

Path loss, a major parameter in the analysis and design of the link budget of a telecommunication system, could be explained as the reduction in power density of an electromagnetic wave as it travels through space, over a distance. Path loss prediction models are therefore vital tools in cell planning, cell parameter estimation, frequency assignments and interference evaluation. This paper reports on the development of a path loss prediction model that describes the signal attenuation between transmitting and receiving antennas as a function of the propagation distance and other parameters for Osogbo, Nigeria. The model is extensively useful for conducting feasibility studies for signal prediction, coverage optimization and interference analysis during the initial phase of network planning in the study area and other areas with similar environmental and propagation characteristics.

scholarly journals The Impact of Soil Texture on Path Loss Modelling of an FM Signal Using Diffraction Technique

2019 ◽  
Vol 4 (4) ◽  
pp. 56-63
Author(s):  
Evans Chinemezu Ashigwuike ◽  
Ale Felix ◽  
Farouq Eneuma Shaibu
Keyword(s):  
Soil Texture ◽  
Free Space ◽  
Path Loss ◽  
Signal Strength ◽  
Radio Station ◽  
Propagation Path ◽  
Area Network ◽  
Prediction Errors ◽  
Fm Radio ◽  
The Impact

A novel solution to predict path loss of an FM signal using diffraction technique is proposed. Diffraction technique and soil texture impact are used to improve the Friis free-space model to predict the received signal strength and propagation path loss of an FM signal between a transmitter site and receiver site, while studying the impact of soil texture to the FM signal in the case of surface wave propagation. Measurement of signal strengths with an interval of 5KM along two different routes (1 and 2) were taken with a Digital Field Strength Meter (DW-400), in some selected open/rural environments of Kogi State. A solid-state transmitter (BE 20S), with broadcast frequency of 101.5MHz at antenna height of 120m was considered as the transmitting point source. Bluetooth signal strength meter software was used to visualize this impact of soil texture, where different types of soil were considered within the coverage area of the FM radio station, with the application of a Wireless Personal Area Network (WPAN) technology. Measurements taken along the two different routes were compared against predictions made by the modified model of Friis Free Space. The model showed quite large mean path loss prediction errors, and places with poor signal strength for Prime FM Radio Nigeria were revealed. The result shows that an FM signal induces current in the ground over which it passes and it is attenuated as a result of absorption of energy by the soil, depending on the soil type.

scholarly journals A study and Description of the Femtocells Wireless Communication Networks

2021 ◽  
Vol 20 (2) ◽  
pp. 16-21
Author(s):  
Fathi Alwafie ◽  
Ali Ukasha ◽  
Nabeil A. Abujnah
Keyword(s):  
Communication Networks ◽  
Path Loss ◽  
Simulated Data ◽  
Access Point ◽  
Network Capacity ◽  
Base Station ◽  
System Capacity ◽  
Propagation Path ◽  
Nomadic Users ◽  
Infrastructure Maintenance

In this paper the femtocell base station called as Femtocell Access Point (FAP) was descriped and studied. The femtocell (FAP) is fully user deployed and hence reduces the infrastructure, maintenance and operational cost of the operator while at the same time providing good Quality of Service (QoS) to the end user and high network capacity gains. The surest way to increase the system capacity and data rates can be achieved efficiently in a wireless system by getting the transmitter and receiver closer to each other. In a network with nomadic users, this inevitably involves deploying more infrastructure, typically in the form of microcells, hotspots, distributed antennas, or relays. Femtocells deployed in the macrocell significantly improve the indoor coverage and provide better user experience. In this paper the four indoor propagation path loss models with simulated data for different scenarios at 2 GHz are presented In additions the Simulation were carried out in two different scenarios LOS and NLOS for max 50m femtocell and max 100m  macrocell network. The simulation results was implemented using Matlab code software.

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