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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 19: SATELLITE COMMUNICATIONS"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 19.14_1: example_2.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 737\n",
+"//problem no 19.14.1\n",
+"//A high power amplr \n",
+"P_HPA=600;TFL_dB=1.5;G_dB_ES=50;RFL_dB=1;GTR_dB_SAT=-8;FSL_dB=200;AML_dB=0.5;PL_dB=0.5;AA_dB=1;\n",
+"//Determination of carrier to noise ratio\n",
+"P_dB_HPA=10*log10(P_HPA/1);\n",
+"EIRP_dB=P_dB_HPA-TFL_dB+G_dB_ES;\n",
+"TPL_dB=FSL_dB+AML_dB+PL_dB+AA_dB;\n",
+"CNoR_dB=EIRP_dB-TPL_dB-RFL_dB+GTR_dB_SAT+228.6;\n",
+"disp(CNoR_dB,'The carrier to noise ratio in dB is');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 19.14_2: example_3.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 739\n",
+"//problem no 19.14.2\n",
+"f=14*10^9;BO_dB=10;GTR_dB_SAT=3;RFL_dB=1;phi_dB=-98;c=3*10^8;\n",
+"//Determination of carrier to noise ratio\n",
+"wav=c/f;\n",
+"Ao_dB=10*log10((wav^2)/(4*(%pi)*1));\n",
+"CNo_dB=phi_dB-BO_dB+GTR_dB_SAT-RFL_dB+Ao_dB+228.6;\n",
+"disp(CNo_dB,'The carrier to noise ratio is');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 19.16_1: example_4.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no \n",
+"//problem no 19.16.1\n",
+"//Determination of overall C/N\n",
+"CNo_dB_U=88;CNo_dB_D=78;\n",
+"NoC_U=10^(-CNo_dB_U/10);\n",
+"NoC_D=10^(-CNo_dB_D/10);\n",
+"NoC=NoC_U+NoC_D;\n",
+"CNo_dB=10*log10(1/NoC);\n",
+"disp(CNo_dB,'The overall carrier to noise ratio is');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 19.17_1: example_6.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"// page no 742\n",
+"// prob no 19.17.1\n",
+"// A digital satellite link is given with following specification\n",
+"Eb_N0=9.6;//ratio expessed in dB\n",
+"Rb=1.544*10^6;//bit rate expessed in bps\n",
+"// The bit rate in dB relative to 1bps is\n",
+"R_dB_b=10*log10(Rb) ;\n",
+"//The required CN0 ratio is\n",
+"CNo_db=Eb_N0+R_dB_b;\n",
+"disp(CNo_db,'The ratio C/No 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
+}