Title :
Distribution characteristics and performance simulations of rain attenuation at Ka band for satellite communications
Author :
Lin, Shuxian ; Zhu, Lidong ; Guo, Yantao ; Gou, Xiaogang
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., UESTC, Chengdu, China
Abstract :
In satellite communication system, rain attenuation is one of the most important reasons for the signal fading transmitted at Ka band (30/20GHz). In this paper, based on the ITU recommendation rainfall attenuation prediction model, we obtain the rainfall attenuation value of one specific area in satellite communication systems at Ka band, in premise of knowing that rain attenuation value of a certain area follows lognormal distribution, then statistical distribution parameters are derived in detail by a method of the least squares curve fitting. After QPSK modulation, signal is polluted by additive noise in AWGN channel. We analyze and simulate the effect of light rain and heavy rain on signal propagation. The simulation results indicate that rain attenuation makes the signal-to-noise ratio and the bit error rate worse.
Keywords :
AWGN channels; curve fitting; error statistics; fading; least squares approximations; log normal distribution; microwave propagation; quadrature phase shift keying; rain; satellite communication; AWGN channel; ITU; Ka band; QPSK modulation; additive noise; bit error rate; distribution characteristics; fading signal transmission; least squares curve fitting; lognormal distribution; rain attenuation; rainfall attenuation prediction model; satellite communication; signal propagation; signal to noise ratio; statistical distribution; Attenuation; Curve fitting; Fading; Polarization; Predictive models; Rain; Satellite communication; Ka-band; Rain attenuation; Rainfall rate; the least square curve fitting;
Conference_Titel :
Millimeter Waves (GSMM), 2012 5th Global Symposium on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-1302-5
DOI :
10.1109/GSMM.2012.6314405
