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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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6
说明: 计算方法hibbert矩阵程序,计算方法上机时间第六题 关于病态矩阵的(Matrix calculation procedures hibbert)
- 2013-12-18 10:47:59下载
- 积分:1
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transmissiontime
全双工中继,不同距离下,画FD、HD和直接传输的时间比(full-duplex relayDifferent distance, painting FD, HD and direct transmission time than)
- 2015-05-10 16:22:38下载
- 积分:1
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PolarCodes-master
说明: 极化码(基于巴氏参数构造)的编译码工程,内包含系统极化码以及非系统极化码的编译码工程。(The encoding and decoding engineering of polarization code (based on the construction of PAP parameters) includes the encoding and decoding engineering of system polarization code and non system polarization code.)
- 2021-01-09 20:08:53下载
- 积分:1
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matlab
matlab高阶谱分析工具箱,分析振动波形的高阶谱。(high-order spectral analysis toolbox matlab to analyze the vibration waveform of high-end spectrum.)
- 2007-08-29 12:40:44下载
- 积分:1
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test
车牌定位
基于彩色图片的车牌定位
matlab下(car)
- 2010-12-14 15:23:32下载
- 积分:1
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monituihuo
说明: 模拟退火算法 自己写的一点小程序 提供一点参考(Simulated annealing algorithm to write their own applets provide a reference point)
- 2010-04-13 13:27:59下载
- 积分:1
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利用Matlab软件来实现基于滤波的正交频分复用F-OFDM
说明: 利用Matlab软件来实现基于滤波的正交频分复用F-OFDM(use the matlab to achieve the F-OFDM)
- 2019-09-28 09:27:32下载
- 积分:1
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a
说明: 用遗传算法解决旅行商问题(附源代码),遗传算法其实是一种求函数极值的随机搜索算法。(Solving the traveling salesman problem using genetic algorithms (with source code), genetic algorithm is a kind of extreme demand function of random search algorithm.)
- 2011-05-11 17:43:08下载
- 积分:1
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Entropy_detection
Entropy Detection in Cognitive Radio
- 2010-05-19 13:18:11下载
- 积分:1