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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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music-algorithm
Music算法程序，可以直接完美实现。亲测好用(Music algorithm)
- 2013-01-16 23:26:23下载
- 积分：1
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basesignal
产生一个长为1000的二进制随机序列，“0”的概率为 0.8，”1”的概率为0.2； 对上述数据进行归零AMI编码，脉冲宽度为符号宽度 的50 ，波形采样率为符号率的8倍，画出前20个符 号对应的波形（同时给出前20位信源序列） 改用HDB3码，画出前20个符号对应的波形 改用密勒码，画出前20个符号对应的波形 分别对上述1000个符号的波形进行功率谱估计，画出 功率谱 改变信源“0”的概率，观察AMI码的功率谱变化情况 (Base band signal spectrum)
- 2020-12-07 09:19:22下载
- 积分：1
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matlabfzkj
matlab解用分支定界法解整数规划的程序。请大家参考(matlab solution using branch and bound method for solving integer programming procedures. Please refer to)
- 2013-07-13 10:50:37下载
- 积分：1
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precision
dct transform 2d 변 환 과 정 을 나 타 내 는 소 스 코 드
- 2010-06-06 21:30:02下载
- 积分：1
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16-QAM-Rayleigh
this is simmulation 16-qam modulation in rayleigh channel
- 2009-12-18 01:49:08下载
- 积分：1
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SoftwareEngineeringandComputerGames
Addison Wesley : Software
Engineering and Computer
Games
- 2011-01-21 10:08:25下载
- 积分：1
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The-Matlab-simulation--
电力谐波带来了严重的危害，有源滤波器是抑制电力谐波的一种有效手段。在Matlab 仿真环境中搭建了有
源滤波器的系统模型，并对其进行了仿真。仿真结果表明，各仿真模块能够完成各自的功能，整个系统的滤波效果非
常好。因而，该仿真模型能对软、硬件的设计起到重要的指导作用(Power Harmonics brought serious harm, active filter is an effective means of suppressing power harmonics. In the Matlab simulation environment to build a model of the active filter system and its simulation. The simulation results showed that the simulation module to complete their respective functions, the filtering effect of the whole system is very good. Thus, the simulation model capable of hardware and software design plays an important role in guiding)
- 2013-12-10 16:42:53下载
- 积分：1
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pass
查看星号密码的代码，比较初级，只是发送一个消息，去掉其密码属性。(View an asterisk password code, compare the primary, only to send a message, remove the password attribute.)
- 2010-01-07 01:52:48下载
- 积分：1
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Select_for_aca001
说明： 蚁群算法的另一种实现形式，通过全局的搜索，避免陷入局部解的改进程序(Another ant colony algorithm to achieve the form of global search through, to avoid falling into local solutions to improve procedures)
- 2020-04-16 19:05:50下载
- 积分：1
