Study of chirp spread spectrum communication system in low frequency atmospheric noise

2012 ◽  
Author(s):  
Wu Yanjun ◽  
Wang Huali ◽  
Sun Lei
Keyword(s):  
Spread Spectrum ◽  
Communication System ◽  
Low Frequency ◽  
Spread Spectrum Communication ◽  
Atmospheric Noise ◽  
Chirp Spread Spectrum

Simulation of VLF CSS System in Atmospheric Noise

2014 ◽  
Vol 556-562 ◽  
pp. 1874-1878
Author(s):  
Gang Fu ◽  
Yan Jun Wu ◽  
Qian He
Keyword(s):  
Fourier Transform ◽  
Spread Spectrum ◽  
Fractional Fourier Transform ◽  
Low Frequency ◽  
Noise Model ◽  
Channel Noise ◽  
Communication Signal ◽  
Atmospheric Noise ◽  
Communication Technique ◽  
Chirp Spread Spectrum

Very Low Frequency (VLF) communication is designed to operate in the frequency between 3 kHz and 30 kHz. The atmospheric noise generated by lightning phenomena is the main source of interference in VLF communications, it is rather difficult to detect the communication signal that not only merged in strong channel noise, but probably interfered by high-tension impulse caused by thunder. This paper, Alpha stable distribution noise model is proposed to simulate atmospheric noise firstly, then, we study a new technique of Chirp Spread Spectrum (CSS) communication based on Fractional Fourier Transform (FRFT), This paper studies a new VLF communication technique of the Chirp Spread Spectrum (CSS) communication based on Fractional Fourier Transform (FRFT), and it demodulates message utilizing energy gathering property of chirp signal in FRFT domain.

SIMULATION OF DIRECT SPREAD SPECTRUM COMMUNICATION SYSTEM ON THE HARDWARE MODULE EMONA DATEX. EVALUATION OF THE EFFECT OF NOISE ON THE QUALITY OF DEMODULATION

2019 ◽  
Author(s):  
Maksim Zhmakin ◽  
Irina Chadyuk ◽  
Aleksey Nadymov
Keyword(s):  
Spread Spectrum ◽  
Communication System ◽  
Spread Spectrum Communication ◽  
Direct Spread ◽  
Simulation Results

A variant of implementation of a communication system with direct spread spectrum is presented in this article, simulation results are also presented, the main parameters of the system are taken, and conclusions are drawn.

scholarly journals Aplikasi Monitoring Energi SHS Off-Grid Menggunakan Lora

2021 ◽  
Vol 13 (1) ◽  
pp. 26-32
Author(s):  
Satrio Yudho
Keyword(s):  
Internet Of Things ◽  
Long Range ◽  
Spread Spectrum ◽  
Communication System ◽  
Electricity Consumption ◽  
Radio Communication ◽  
Energy Monitoring ◽  
Chirp Spread Spectrum ◽  
Solar Home System ◽  
Radio Communication System

The manner of efficiency and effective of power usage is the main objective in electricity consumption, one major steps to control the usage is by providing a monitoring to aim the power usage data and process it to information needed. Internet of Things benefit in power and electricity has involved sensors to work as data reader continuously.  LoRa or well known as Long Range radio communication system work with chirp spread spectrum which work from 920 to 923 Mhz in Indonesia. This paper presents implementation of LoRa system to support the prototype of energy monitoring in Solar Home System off-grid

scholarly journals AJ Performance of the FH-CSS(Frequency Hopped - Chirp Spread Spectrum) Communication Systems

2011 ◽  
Vol 14 (1) ◽  
pp. 69-73
Author(s):  
Sung-Ho Kim ◽  
Young-Jae Kim ◽  
Seok-Gu Hwang ◽  
Byoung-Gak Jo ◽  
Kwan-Ho Shin ◽  
...  
Keyword(s):  
Spread Spectrum ◽  
Communication Systems ◽  
Spread Spectrum Communication ◽  
Chirp Spread Spectrum
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