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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 11: PULSE MODULATION"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 11.3_1: example_1.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 392\n",
+"//prob no. 11.3.1\n",
+"//PCM system with SNR=40dB & rms peak ratio=-10\n",
+"SNR=40;\n",
+"//a)Determination of no. of bits/code\n",
+"n=(SNR-(10*log10(3))-(-10))/(20*log10(2));\n",
+"disp(n,'The no. of bits per code word is');\n",
+"disp('Rounded off ','=8');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 11.3_2: example_2.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 393\n",
+"//prob no. 11.3.2\n",
+"//A telephone signal wih cut off freq=4kHz digitzed into 8-bit at nyquist sampling rate fs=2W\n",
+"q=1;W=4*10^3;n=8;\n",
+"//a)Determination of Tx Bandwidth\n",
+"B=(1+q)*W*n;\n",
+"disp('Hz',B,'a)The transmission BW is');\n",
+"//b)Determination of quantization S/N ratio\n",
+"SN_dB=6*n;\n",
+"disp('dB',SN_dB,'b)The quantization S/N ration is'); "
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}