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+// Exa 4.4
+// TO calculate:
+// A)The minimum number of bits/sample or bits/PCM word that should be used.
+// B)The minimum sampling rate, and what is the resulting transmission rate.
+// C)The PCM pulse or symbol transmission rate.
+
+clc;
+clear all;
+
+Fm=3000; //highest modulating frequency in signal(Hz)
+M=32; // number of pulse levels 
+b=5; //bits per symbol 
+p=0.01; //Quantization distortion
+
+//solution
+//2^R = L >= 1/2P
+// where R is the number of bits required to represent quantization levels L
+R=log10(1/(2*p))/log10(2);
+Fs=2*Fm;  // Nyquist sampling criteria (samples per second)
+fs=round(R)*Fs;
+Rs=fs/b;
+printf('The minimum number of bits/sample or bits/PCM word that should be used are %d',round(R));
+printf('\n The minimum sampling rate is %d samples per second\n ',Fs);
+printf('The resulting transmission rate is %d bps\n ',fs);
+printf('The PCM pulse or symbol transmission rate is %d symbols/sec\n',Rs);