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Diffstat (limited to 'Principles_Of_Electronic_Communication_Systems/chapter5.ipynb')
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diff --git a/Principles_Of_Electronic_Communication_Systems/chapter5.ipynb b/Principles_Of_Electronic_Communication_Systems/chapter5.ipynb new file mode 100755 index 00000000..3539866c --- /dev/null +++ b/Principles_Of_Electronic_Communication_Systems/chapter5.ipynb @@ -0,0 +1,253 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:91b0cb714976b5e3abb5fa418cb1d12fb7cd307f6d4fd008a74f2dcf67b41e57"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 5 Fundamentals of frequency modulation"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.1 Page no 153"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "f = 915*10**6\n",
+ "fm_deviation =12.5*10**3\n",
+ "\n",
+ "#Calculation\n",
+ "max_deviation = f + fm_deviation\n",
+ "min_deviation = f - fm_deviation\n",
+ "\n",
+ "#Result\n",
+ "print\"Maximum frequency occur during modulation is \",max_deviation/1000.0,\"KHz\"\n",
+ "print\"Minimum frequency occur during modulation is \",min_deviation/1000.0,\"KHz\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Maximum frequency occur during modulation is 915012.5 KHz\n",
+ "Minimum frequency occur during modulation is 914987.5 KHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.2 Page no 160"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "max_deviation = 25*10**3\n",
+ "fm =15.0*10**3\n",
+ "\n",
+ "#Calculation\n",
+ "mf =max_deviation/fm\n",
+ "\n",
+ "#Result\n",
+ "print\"The deviation ratio of the TV sound is \",round(mf,3)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The deviation ratio of the TV sound is 1.667\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.3 Page no 162"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "mf = 2.2\n",
+ "fd = 7.48*10**3\n",
+ "\n",
+ "#Calculation\n",
+ "fm = fd/mf\n",
+ "\n",
+ "#Result\n",
+ "print\"The maximum modulating frequency is \",fm/1000.0,\"KHz\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The maximum modulating frequency is 3.4 KHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.4 Page no 164"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "J0 = -0.4\n",
+ "J1 = -0.07\n",
+ "J2 = 0.36\n",
+ "J3 = 0.43\n",
+ "J4 = 0.28\n",
+ "\n",
+ "#Result\n",
+ "print\"The amplitude of the carrier is \",J0\n",
+ "print\"Amplitudes of the first four sidebands are \",\" \\n \", J1,\"\\n \",J2,\"\\n \",J3,\"\\n \",J4\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The amplitude of the carrier is -0.4\n",
+ "Amplitudes of the first four sidebands are \n",
+ " -0.07 \n",
+ " 0.36 \n",
+ " 0.43 \n",
+ " 0.28\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.5 Page no 165"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "fd = 30*10**3\n",
+ "fm = 5*10**3\n",
+ "N=9\n",
+ "\n",
+ "#Calculation\n",
+ "bw1 = 2*fm*N\n",
+ "bw2 = 2*(fd+fm)\n",
+ "\n",
+ "#Result\n",
+ "print\"The maximum bandwidth of the fm signal is \",bw1/10**3,\"KHz\"\n",
+ "print\"Bandwidth using carson's rule \",bw2/10**3,\"KHz\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The maximum bandwidth of the fm signal is 90 KHz\n",
+ "Bandwidth using carson's rule 70 KHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.6 Page no 167"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "S_N = 2.8\n",
+ "fm = 1.5*10**3\n",
+ "fd =4*10**3\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "fi= math.asin(1/S_N)\n",
+ "delta = fi*fm\n",
+ "SN =fd/delta\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The frequency deviation caused by the noise \",round(delta,1),\"Hz\"\n",
+ "print\"(b) The improved output signal to noise ratio is \",round(SN,1)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The frequency deviation caused by the noise 547.8 Hz\n",
+ "(b) The improved output signal to noise ratio is 7.3\n"
+ ]
+ }
+ ],
+ "prompt_number": 21
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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