initial commit / add all books

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diff --git a/1574/CH15/EX15.3/BIT_Ex_15_3.sce b/1574/CH15/EX15.3/BIT_Ex_15_3.sce
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+// the Answer in the book is wrong.It is printed as 90.4 for SNR3 but it should be 100.59

+clc

+//Chapter15

+//Example15.3, page no 536

+//Given

+//a

+B1=4e3//Channel Bandwidth

+SNR1=31//Channel SNR

+C1=B1*log2(1+SNR1)//Channel Capacity

+SNR2=14//Reduced SNR

+B2=round(C1/log2(1+SNR2))//Bandwidth for reduced SNR with same Channel capacity

+

+//b

+B3=3e3//Reduced Bandwidth

+SNR3=(2^(C1/B3))-1//Signal Power for reduced bandwidth

+mprintf('a)\n  Channel capacity is: %d Kbits/sec\n    Bandwidth: %d KHz\nb)\n  SNR for 3KHz bandwidth: %f',C1*1e-3,B2*1e-3,SNR3)

+

diff --git a/1574/CH15/EX15.3/Result_of_Chapter_15_Ex15_3.JPG b/1574/CH15/EX15.3/Result_of_Chapter_15_Ex15_3.JPG
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