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+// Example no 6.8
+// To find the first zero-crossing RF bandwidth of rectangular pulse and compare to raised cosine filter pulse
+// Page no. 291
+
+clc;
+clear all;
+
+// Given data
+RectTs=41.06*10^-6;                                             // Symbol period of rectangular pulse
+cosineTs=41.06*10^-6;                                           // Symbol period of cosine filter pulse
+alpha=0.35;                                                     // Rolloff factor of cosine filter pulse
+
+// To find the first zero-crossing RF bandwidth of rectangular pulse
+B1=2/RectTs;                                                    // The first zero-crossing RF bandwidth of rectangular pulse
+
+// The first zero-crossing RF bandwidth of cosine filter pulse
+B2=(1/cosineTs)*(1+alpha);                                      // The first zero-crossing RF bandwidth of cosine filter pulse
+
+// Displaying the result in command window
+printf('\n The first zero-crossing RF bandwidth of rectangular pulse = %0.2f kHz',B1*10^-3);
+printf('\n The first zero-crossing RF bandwidth of cosine filter pulse = %0.2f kHz',B2*10^-3);