信号处理导论(英文影印版) 习题答案_7new

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1、第七章7.1a)h(n)−h(n−5)=δ(n−1)+2δ(n−2)+3δ(n−3)+4δ(n−4)⎧h(0)=0www.khdaw.com⎪h(1)=1⎪⎪⎪h(2)=2∴⎨h(3)=3⎪课后答案网⎪h(4)=4⎪⎪⎩h(n)=h(n−5)n≥5b)directform:⎧v0=x⎪⎪w0=w5+v1+2v2+3v3+4v4⎨⎪delay(w,5)⎪⎩delay(v,4)www.khdaw.comcanonicalform:⎧w0=w5+x⎪⎨y=w1+2w2+3w3+4w4⎪课后答案网delay(w,4)⎩c

2、)−1−1−2−3z(1+2z+3z+4z)H(z)=−1−1−2−3−4(1−z)(1+z+z+z+z)−1−1−2−3z1+2z+3z+4z=⋅−1−1−2−3−41−z1+z+z+z+z−1zH(z)=1−11−zwww.khdaw.com−1−2−31+2z+3z+4zH(z)=2−1−2−3−41+z+z+z+z课后答案网⎧w00=x+w01⎪y=w⎪001⎪⎪w01=w00⎨w=y−w−w−w−w⎪10011121314⎪y=w+2w+3w+4w10111213⎪www.khdaw.com⎪w=w；w

3、=w；w=w；w=w⎩1413131212111110课后答案网7.9−31+z1)H(z)=1−41−0.64z−1−1−22)1+z1−z+zH(z)=⋅−2−21−0.8z1+0.8z3)cascaderealizationwww.khdaw.com课后答案网4)sample-by-samplealgorithm⎧w00=x+0.8w02⎪y=w+w⎪00001⎪⎪w02=w01；w01=w00⎨w=y−0.8w⎪10012⎪y=w10−w11+w12www.khdaw.com⎪⎪w=w；w=w⎩12111

4、110课后答案网