LoRa and High-Altitude Platforms: Path Loss, Link Budget and Optimum Altitude

2021 ◽  
Author(s):  
Abdulrahman Almarhabi ◽  
Abdulah Jeza Aljohani ◽  
Muhammad Moinuddin
Keyword(s):  
High Altitude ◽  
Path Loss ◽  
High Altitude Platforms ◽  
Link Budget

Broadband from heaven [high altitude platforms]

2004 ◽  
Vol 2 (2) ◽  
pp. 18-23 ◽  
Author(s):  
S. Karapantazis ◽  
F.N. Pavlidou
Keyword(s):  
High Altitude ◽  
High Altitude Platforms

scholarly journals Advanced Communication Techniques and Applications for High-Altitude Platforms

2008 ◽  
Vol 2008 (1) ◽  
Author(s):  
Abbas Mohammed ◽  
Shlomi Arnon ◽  
David Grace ◽  
Marina Mondin ◽  
Ryu Miura
Keyword(s):  
High Altitude ◽  
Communication Techniques ◽  
High Altitude Platforms

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 GEOMETRICAL ANALYSIS OF HIGH ALTITUDE PLATFORMS CELLULAR FOOTPRINT

2007 ◽  
Vol 67 ◽  
pp. 263-274 ◽  
Author(s):  
Moawad Ibrahim Dessouky ◽  
Hamdy A. Sharshar ◽  
Yasser Attia Albagory
Keyword(s):  
High Altitude ◽  
Geometrical Analysis ◽  
High Altitude Platforms

scholarly journals Time-Varying Communication Channel High Altitude Platform Station Link Budget and Channel Modeling

Information ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 210
Author(s):  
Xiaoyang Liu ◽  
Hengyang Liu ◽  
Chao Liu ◽  
Ya Luo
Keyword(s):  
High Altitude ◽  
Channel Model ◽  
Channel Modeling ◽  
Link Quality ◽  
Communication Link ◽  
Noise Power ◽  
Golay Code ◽  
High Altitude Platform ◽  
Link Budget ◽  
High Altitude Platform Station

Because of the high BER (Bit Error Rate), low time delay and low channel transmission efficiency of HAPS (High Altitude Platform Station) in the near space. The link budget of HAPS and channel model are proposed in this paper. According to the channel characteristic, the channel model is set up, combined with different CNR (Carrier Noise Ratio), elevation angle, coding situations of wireless communication link by using Hamming code, PSK (Pulse Shift Keying) and Golay code respectively, then the situations of link quality and BER are analyzed. The simulation results show that the established model of the link budget and channel are suitable for the theoretical analysis results. The elevation of the HAPS communication link is smaller while the BER is increasing. The case of channel in the coding is better than in the un-coded situation. When every bit power and thermal noise power spectral density is larger, the BER of the HAPS communication link is becoming smaller.

scholarly journals Pengaruh Penggunaan Jenis Modulasi Sistem HAPS pada Layanan DVB-T

Elkawnie ◽  
2016 ◽  
Vol 2 (2) ◽  
pp. 177
Author(s):  
Sri Wahyuni
Keyword(s):  
High Altitude ◽  
Digital Video ◽  
Digital Video Broadcasting ◽  
Video Broadcasting ◽  
High Altitude Platforms

DVB-T (Digital Video Broadcasting- Terresrial) merupakan sebuah standar terbuka dalam transmisi video digital yang telah diakui secara internasional dikeluarkan oleh ETSI. Pada penelitian ini akan menganalisis pengaruh pemilihan jenis modulasi yang digunakan terhadap performansi layanan DVB-T pada sistem High Altitude Platforms Station (HAPS). HAPS yang dikenal sebagai stratospheric broadband adalah sebuah standar infrastruktur telekomunikasi yang serupa dengan satellite, yang ditempatkan di lapisan stratosfer. HAPS dikembangkan untuk menjalankan layanan serupa satellite dengan biaya yang lebih hemat, waktu perealisasian yang jauh lebih pendek dan memiliki cakupan yang jauh lebih besar dibandingkan dengan infrastuktur terestial saat ini. Kanal HAPS dapat menyediakan hubungan LOS antara platform HAPS dengan user sehingga dapat disimulasikan dengan kanal rician. Berdasarkan hasil penelitian, performansi layanan DVB-T pada sistem HAPS dipengaruhi oleh jenis modulasi dan mode kerja yang digunakan, penggunaan modulasi QPSK dengan mode kerja 8K memberikan performansi paling baik, dengan memenuhi nilai BER yang telah ditentukan yaitu lebih kecil dari 10-4

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