利用matlab实现两个序列的线性卷积：求X1（n）=R4(n),X2(n)=2的n次方（ u(n)-u(n-5）)求X1（n)*X2(n)

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参考一下

你好，答案仅供参考

function main
n = -10:1:10;
x1 = zeros(size(n));
x2 = x1;
for j = 1:1:numel(n)
    nj = n(j);
x1(j) = R4(nj);
x2(j) = 2^(nj)*(u(nj)-u(nj-5));
end
g = conv(x1,x2,'same');
plot(n,g)

end


function x = R4(n)
Q = 0:1:3;
if(ismember(n,Q))
    x = 1;
else
    x = 0;
end
end

function x = u(n)
if(n>=0)
    x = 1;
else
    x = 0;
end
end

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