bet188金宝搏

% 16点FFT
%反转输出....
%大量毁灭的频率
清除所有;
关闭所有;
clc;
%输入系数
x0 = 1 + i * 1;
x1 = 2 + i * 1;
x2 = 1 - i * 2;
x3 = 2——我* 1;
x4 = 2 + i * 3;
x5 = 3 + i * 2;
x6 = 1 + i * 3;
x7 = 3 + i * 1;
×8 = 3 + i * 3;
x9 = 3 -我* 3;
x10 = 1 - i * 1;
x11 = 3 -我* 3;
x12 = 3 -我* 3;
* 13 = 1 - i * 1;
= 3,我* 3;
连接= 1 + i * 1;
x = (x0, x1, x2, x3, x4, x5;
x6;x7;的混合体;x9;x10;x11;
x12; * 13;x14; x15];

%抚弄因素
%第三阶段
tc0 = 1.0000;
tc1 = 0.9239 - 0.3827我;
tc2 = 0.7071 - 0.7071我;
tc3 = 0.3827 - 0.9239我;
tc4 = 0.0000 - 1.0000我;
tc5 = -0.3827 - 0.9239我;
tc6 = -0.7071 - 0.7071我;
tc7 = -0.9239 - 0.3827我;

%抚弄因素
% 2阶段
tb0 = 1.0000;
tb1 = 0.7071 - 0.7071我;
tb2 = 0.0000 - 1.0000我;
tb3 = -0.7071 - 0.7071我;

% 1阶段
ta0 = 1.0000;
ta1 = 0.0000 - 1.0000我;

% %第三阶段输出
s3_0 = x0 +的混合体;
s3_1 = x1 + x9;
s3_2 = x2 + x10;
s3_3 = x3 + x11;
s3_4 = x4 + x12;
s3_5 = * + * 13;
s3_6 = x6 + x14;
s3_7 = x7 +连接;
s3_8 = (x0 -×8) * tc0;
s3_9 = (x1 - x9) * tc1;
s3_10 = (x2 - x10) * tc2;
s3_11 = (x3 (x11) * tc3;
s3_12 = (x4 - x12) * tc4;
s3_13 = (x5 - * 13) * tc5;
s3_14 = (x6 - x14英寸)* tc6;
s3_15 = (x7 - x15) * tc7;

Stage3 = [s3_0; s3_1; s3_2 s3_3; s3_4;
s3_5; s3_6 s3_7; s3_8 s3_9;
s3_10; s3_11 s3_12;
s3_13; s3_14 s3_15];

% %第二阶段输出
s2_0 = s3_0 + s3_4;
s2_1 = s3_1 + s3_5;
s2_2 = s3_2 + s3_6;
s2_3 = s3_3 + s3_7;
s2_4 = (s3_0 - s3_4) * tb0;
s2_5 = (s3_1 - s3_5) * tb1;
s2_6 = (s3_2 - s3_6) * tb2;
s2_7 = (s3_3 - s3_7) * tb3;
s2_8 = s3_8 + s3_12;
s2_9 = s3_9 + s3_13;
s2_10 = s3_10 + s3_14;
s2_11 = s3_11 + s3_15;
s2_12 = (s3_8 - s3_12) * tb0;
s2_13 = (s3_9 - s3_13) * tb1;
s2_14 = (s3_10 - s3_14) * tb2;
s2_15 = (s3_11 - s3_15) * tb3;

Stage2 = [s2_0; s2_1; s2_2 s2_3; s2_4;
s2_5; s2_6 s2_7; s2_8 s2_9;
s2_10; s2_11 s2_12;
s2_13; s2_14 s2_15];
% %第一阶段
s1_0 = s2_0 + s2_2;
s1_1 = s2_1 + s2_3;
s1_2 = (s2_0 - s2_2) * ta0;
s1_3 = (s2_1 - s2_3) * ta1;
s1_4 = s2_4 + s2_6;
s1_5 = s2_5 + s2_7;
s1_6 = (s2_4 - s2_6) * ta0;
s1_7 = (s2_5 - s2_7) * ta1;
s1_8 = s2_8 + s2_10;
s1_9 = s2_9 + s2_11;
s1_10 = (s2_8 - s2_10) * ta0;
s1_11 = (s2_9 - s2_11) * ta1;
s1_12 = s2_12 + s2_14;
s1_13 = s2_13 + s2_15;
s1_14 = (s2_12 - s2_14) * ta0;
s1_15 = (s2_13 - s2_15) * ta1;

% % 0阶段
s0_0 = s1_0 + s1_1;
s0_1 = s1_0 - s1_1;
s0_2 = s1_2 + s1_3;
s0_3 = s1_2 - s1_3;
s0_4 = s1_4 + s1_5;
s0_5 = s1_4 - s1_5;
s0_6 = s1_6 + s1_7;
s0_7 = s1_6 - s1_7;
s0_8 = s1_8 + s1_9;
s0_9 = s1_8 - s1_9;
s0_10 = s1_10 + s1_11;
s0_11 = s1_10 - s1_11;
s0_12 = s1_12 + s1_13;
s0_13 = s1_12 - s1_13;
s0_14 = s1_14 + s1_15;
s0_15 = s1_14 - s1_15;

Y = [s0_0; s0_1; s0_2 s0_3; s0_4;
s0_5; s0_6 s0_7; s0_8 s0_9;
s0_10; s0_11 s0_12; s0_13;
s0_14; s0_15);
% i = 0:15;
% de2bi(我);
% D = bi2de (ans left-msb);
% D1 = D + 1;
Y = [(1); Y (9); Y (5); Y (13), Y (3);
(11);Y (7); Y (15); Y (2);
(10);Y (6); Y (14);
(4);Y (12); Y (8); Y (16)];
人物,情节(abs (Y));标题(我们的FFT结果);%绘制我的FFT

Y_fft = fft (x, 16);
图;情节(abs (Y_fft));标题(“MATLAB函数FFT结果”);%绘制matlab的FFT建成的