plot_2.m

通过图形实现OFMD的图像仿真

line=3;
x=5:2.5:40;
y=zeros(line,15);
yo=587;
y_scale=(587-40)/3;
ya=[65 107 155 204 249 265 300 339 347 354 376 375 395 385 401 
    149 179 223 263 288 300 318 328 332 339 347 347 347 353 350 
    159 196 225 276 302 312 343 353 353 352 352 352 355 358 359];
yr=(yo-ya)/y_scale;
for row=1:line
    for column=1:15
        y(row, column)=1e-4*10^yr(row, column);
    end
end

figure;
semilogy(x,y(1,:),'+--', x, y(2,:), '*:', x, y(3,:), 'o-.');
hold on;
ylabel('MSE');
xlabel('SNR(dB)');
axis([5,40,1e-4,1e-1]);
legend('线性内插','变换域插值','线性内插+低通滤波');