资源简介

能完美产生数字地面电视(DTMB)的信源的程序。帧头模式为模式一。信道可选择,信号加入频偏,延时,后经滤波器后输出。

资源截图

代码片段和文件信息

function [ Y ] = multipath_model( Xzhen_lengthM )               %% X-输入的数据,zhen_length-X的长度,% M为信道类别,M=1234567分别对应巴西信道A,B,C,D,E,市区TU,多山区HTx

Am_all=[1.0000    0.0417    0.0240    0.0324    0.0437    0.0229; %%Brazil A
        1.0000    0.0631    0.3981    0.1995    0.0316    0.0063; %%Brazil B
        1.0000    0.5248    0.4169    0.9772    0.5623    0.7413; %%Brazil C
        1.0000    0.9772    0.4169    0.5495    0.7413    0.5248; %%Brazil D
        1         1         1         0         0         0     ; %%Brazil E
        0.5012    1.0000    0.3162    0.2512    0.1585    0.1000; %%市区TU模型
        1.0000    0.6310    0.3981    0.1995    0.2512    0.0631];%%多山区HTx模型
delay_symbols_all=[0     1    17    23    44    45; %%Brazil A
                   0     2    26    33    72    96; %%Brazil B
                   1     0     3    11    18    21; %%Brazil C
                  44     1     5    17    23    45; %%Brazil D
                   0     8    15     0    0      0; %%Brazil E
                   0     2     4    12    17    38; %%市区TU模型
                   0     2     3     5   113   130];%%多山区HTx模型

Am=Am_all(M:);
delay_symbols=delay_symbols_all(M:);
Y=zeros(1zhen_length);
for i=1:6
    channel_data=zeros(1zhen_length);
    for k=1:zhen_length-delay_symbols(i)
        channel_data(k+delay_symbols(i))=X(k);
    end
    Y=Y+Am(i)*channel_data;
end


end

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       4130  2011-05-18 08:51  DTMB\data_generate.m

     文件        976  2011-05-18 08:51  DTMB\GetPN420.m

     文件        513  2011-05-18 08:52  DTMB\PN420_xiangwei.mat

     目录          0  2013-07-25 10:51  DTMB

     文件       1440  2011-05-18 08:52  multipath_model.m

----------- ---------  ---------- -----  ----

                 7059                    5


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