Title :
Simulation of CSS communication system in VLF atmospheric noise
Author :
Yanjun Wu ; Huali Wang ; Lei Sun ; Guangjie Xu
Author_Institution :
Coll. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
Abstract :
Chirp spread spectrum (CSS) technique has been extensively studied in the application of Ultra-wide band (UWB). Considering the long distance propagation capacity and low intercepted probability of chirp signal, we propose to apply the CSS technique to the very low frequency (VLF) communication system. First, we discuss the CSS system based on fractional Fourier transform (FRFT), including the definition of FRFT and means of modulation and demodulation. Then we introduce an analytic model of VLF atmospheric noise presented by E C. Field [1] and generate atmospheric noise by MATLAB software. Finally, we perform simulation of the CSS communication system in atmospheric noise. The simulation results validate its feasibility.
Keywords :
Fourier transforms; spread spectrum communication; ultra wideband communication; CSS communication system; VLF; atmospheric noise; chirp signal; chirp spread spectrum technique; fractional Fourier transform; long distance propagation capacity; low intercepted probability; ultra-wide band communication; very low frequency communication system; Atmospheric modeling; Cascading style sheets; Chirp; Communication systems; Demodulation; Fourier transforms; Noise;
Conference_Titel :
Information Science and Technology (ICIST), 2013 International Conference on
Conference_Location :
Yangzhou
Print_ISBN :
978-1-4673-5137-9
DOI :
10.1109/ICIST.2013.6747838
