根升余弦滤波器与升余弦滤波器

1.Rcosfir：design a raised cosine FIR filter.（rcosfir是低通滤波用的，以便后面加载频。）html       B = RCOSFIR(R, N_T, RATE, T) designs and returns a raised cosine FIR filter.web    A raised cosine filter is typically u

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