Antenna diversity measurements of DVB-T signals in mobility conditions: Validation and improvement of the link budget model

2011 ◽  
Author(s):  
Leopoldo Angrisani ◽  
Mario Farias ◽  
Roberto Cavaliere ◽  
Danilo Izzo
Keyword(s):  
Antenna Diversity ◽  
Budget Model ◽  
Link Budget

Link budget model and applications for laser communications through the atmosphere

1993 ◽  
Author(s):  
Estela Fernandez ◽  
Pedro Menendez-Valdes ◽  
Manfred E. Wittig ◽  
Adolfo Comeron
Keyword(s):  
Budget Model ◽  
Laser Communications ◽  
Link Budget

A Link Budget Model for UWB-WPAN Applications

2006 ◽  
Author(s):  
Zoubir Irahhauten ◽  
Javier Dacuna ◽  
Gerard Janssen ◽  
Homayoun Nikookar
Keyword(s):  
Budget Model ◽  
Link Budget

scholarly journals Electromagnetic Soil Characterization for Undergrounded RFID System Implementation

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 106
Author(s):  
Ayman Elboushi ◽  
Ahmed Telba ◽  
Abdelrazik Sebak ◽  
Khalid Jamil
Keyword(s):  
Experimental Study ◽  
Soil Samples ◽  
Sand Layer ◽  
Soil Characterization ◽  
System Implementation ◽  
Rfid Tag ◽  
Budget Model ◽  
Electromagnetic Characteristic ◽  
Rfid System ◽  
Link Budget

This paper can be divided into two main parts. In the first part, an extensive experimental study for electromagnetic characteristic assessment of different soil samples is presented. In the second part of the paper, a practical verification of the obtained link budget model is performed using a buried metal-backed RFID tag antenna under a 40 cm sand layer. This antenna is designed to operate at 915 MHz with MONZA3 chip. Using Impinj Speedway system the tag antenna could be detected, and its information could be read from different distances of up to more than 2.5 m.

Rekomendasi Arsitektur Jaringan Nirkabel berbasis Hotspot untuk area pedesaan (Studi Kasus Pedesaan Jawa Timur Indonesia)

CYCLOTRON ◽  
2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Sabri Balafif ◽  
Tining Haryanti
Keyword(s):  
Ieee 802.11 ◽  
Wireless Access ◽  
Traffic Load ◽  
Line Of Sight ◽  
User Mobility ◽  
Broadband Wireless Access ◽  
Broadband Wireless ◽  
Internet Users ◽  
Link Budget ◽  
Tier 3

Abstrak— Penelitian ini bertujuan untuk mengetahui pola trafik internet pada beberapa lokasi yang diteliti. Pengamatan dilakukan selama dua belas (12) bulan. Data diolah dengan metode statistika untuk mendapatkan proyeksi pengguna internet dan kebutuhan titik hotspot. Penelitian menghasilkan rekomendasi kebutuhan hotspot dengan mempertimbangkan mobilitas pengguna internet dan countur lokasi. Rekomendasi perangkat berbeda pada tiap lokasi dari sisi geografis dan padatnya area. Line of Sight mempengaruhi kemampuan perangkat dalam memancarkan signal internet.Hasil penelitian menunjukkan terjadinya peningkatan pengguna internet pada hari raya umat Islam, Hal ini diduga karena mayoritas masyarakat pada lokasi tersebut muslim. Proyeksi pelanggan di 300 desa didapatkan minimum penetrasi 36,7% dan maksimal 85.2%. Rekomendasi sejumlah 940 Titik hotspot dengan area bandwith secara statik sebesar 3Mbps (aggregate download dan upload).  Penelitian memperhitungkan Link Budget perangkat backhoul tier 3 dengan frekuensi 24Ghz. Setiap  perangkat dapat menangani rata-rata jumlah device yang terkoneksi secara bersama sejumlah > 200 Device teknologi Wi-Fi (IEEE 802.11). Beban total trafik  > 1,6 GBPS. Rekomendasi Arsitektur  broadband wireless access Berbasis Hotspot Di Jawa Timur yaitu Surabaya 140 lokasi dengan 400 titik hotspot, Mojokerto sejumlah 70 lokasi dengan 210 titik hotspot. Pandaan sejumlah 80 lokasi dengan 240 titik hotspot Malang  43 lokasi dengan 90 titik hotspot.Kata kunci: Broadband Wireless Access, Hotspot, Line Of SightAbstract— This study aims to determine the pattern of internet traffic in several locations in Jawa Indonesia. Observations were made for twelve (12) months. Data is processed using statistical methods to obtain projections of internet users and hotspot needs. This study produces recommendations for hotspot needs by considering internet user mobility and location contours. Device recommendations vary by location in terms of geography and crowded areas. Line of Sight affects the ability of the device to emit internet signals. The results showed an increase in internet users on Muslim holidays. Projected customers in 300 villages have a minimum penetration of 36.7% and a maximum of 85.2%. The recommended number of 940 hotspots with a static area of 3Mbps (download aggregate and upload). This study takes into account the tier 3 Link Budget backhoul device with a frequency of 24Ghz. Each device can handle the average number of devices that are connected together by> 200 Wi-Fi technology devices (IEEE 802.11). Total traffic load> 1.6 GBPS. Architectural recommendations for broadband wireless access based on hotspots in East Java, Surabaya, 140 locations with 400 hotspots, Mojokerto with 70 locations with 210 hotspots. Pandaan a total of 80 locations with 240 Malang hotspots 43 locations with 90 hotspots Keywords: Broadband Wireless Access, Hotspot, Line Of Sight

Fault Tree Analysis for a Modern Communication System

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kamal Hamid ◽  
Nadim Chahine
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Theory And Practice ◽  
Tree Analysis ◽  
Satisfactory Performance ◽  
System Components ◽  
Link Budget ◽  
Simulation Results

Wireless communications became one of the most widespread means for transferring information. Speed and reliability in transferring the piece of information are considered one of the most important requirements in communication systems in general. Moreover, Quality and reliability in any system are considered the most important criterion of the efficiency of this system in doing the task it is designed to do and its ability for satisfactory performance for a certain period of time, Therefore, we need fault tree analysis in these systems in order to determine how to detect an error or defect when happening in communication system and what are the possibilities that make this error happens. This research deals with studying TETRA system components, studying the physical layer in theory and practice, as well as studying fault tree analysis in this system, and later benefit from this study in proposing improvements to the structure of the system, which led to improve gain in Link Budget. A simulation and test have been done using MATLAB, where simulation results have shown that the built fault tree is able to detect the system’s work by 82.4%.

scholarly journals Omnidirectional antenna diversity system for high-speed onboard communication

Engineering ◽  
2020 ◽  
Author(s):  
Yongjian Zhang ◽  
Yue Li ◽  
Weiquan Zhang ◽  
Zhijun Zhang ◽  
Zhenghe Feng
Keyword(s):  
High Speed ◽  
Antenna Diversity ◽  
Omnidirectional Antenna
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