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two_ray_model
Modelo de dos rayos de Andrea Goldsmith (figura 2.5, según expresión
2.12)
f = 0.9 frecuencia en GHz
landa = 0.3/f en m
R = -1 coeficiente de reflexión en tierra
ht = 10 altura del transmisor en m
hr = 2 altura del receptor en m
Gt = 1
Gr = 1
Pt = 1
d=10:.1:100000
phase_diff = 4*pi*ht*hr./(landa*d) aproximación
Pr = Pt*((landa/(4*pi))^2)*((abs((sqrt(Gt)./d) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff)))./d)).^2)
Pr = Pt*((landa/(4*pi))^2)*(1./d).*((abs((sqrt(Gt)) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff))))).^2)
figure(1), clf,
plot((d),10*log10(Pr/max(abs(Pr))))
grid
xlabel( log_1_0(d) )
ylabel( Potencia recibida (dBm) )
- 2010-02-08 06:31:54下载
- 积分：1
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LPC
LPC voice compression and decompression example
- 2014-02-13 18:45:11下载
- 积分：1
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Polar_BP_code
极化码BP译码算法，三种改进的BP译码算法。(Polarization code BP decoding algorithm, three improved BP decoding algorithms.)
- 2020-12-22 21:39:07下载
- 积分：1
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downloadpaper
关于直接序列扩频通信的，介绍了其原理，给出了SIMULINK仿真模型，并对各个模块作了详细的描述。(On direct sequence spread spectrum communications, introduced its principle, given SIMULINK simulation model, and each module in detail description.)
- 2008-06-11 17:27:29下载
- 积分：1
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MATLABProgramDesignAndApplication
说明： 一本简单易懂的matlab入门编程学习用书(A straightforward entry program to learn matlab books)
- 2010-04-15 15:56:41下载
- 积分：1
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GuideWave
选取试探函数求解双脊波导中截止频率和场分布(Selecting trial function to solve cut-off frequency and field distribution in double ridge waveguide)
- 2018-06-18 23:28:42下载
- 积分：1
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filter_AR_file
AR模型功率谱估计,Matlab环境,估计效果较好.(AR model for power spectrum estimation, Matlab environment, it is estimated better.)
- 2011-01-18 23:09:49下载
- 积分：1
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changjiang
来自长江水质评价与预测全国得奖论文的源代码，仅供大家参考学习(From the Yangtze River water quality assessment and prediction of the award-winning paper source code, for your reference learning)
- 2013-08-08 20:07:47下载
- 积分：1
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matlabcodes
femto cells matlab code
- 2014-10-11 14:01:14下载
- 积分：1
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PMSG_detailed
Detail working of PMSG with in pitch and yaw control
- 2015-02-21 18:44:48下载
- 积分：1
