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diff --git a/backup/temp_version_backup/chapter7.ipynb b/backup/temp_version_backup/chapter7.ipynb new file mode 100755 index 00000000..c4587482 --- /dev/null +++ b/backup/temp_version_backup/chapter7.ipynb @@ -0,0 +1,221 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:13e4ad42742896befb0b329fd930804197555dd5705f1dd526b017e9117b7b00"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 7 Digital communication techniques"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.1 Page no 210"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "t = 71.4*10**-6\n",
+ "\n",
+ "#calculation\n",
+ "f = 1/t\n",
+ "fourth_harmonic = f*4\n",
+ "min_sampling = 2*fourth_harmonic\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The frequency of the signal is \",round(f/10**3,1),\"KHz\"\n",
+ "print\"(b) The fourth harmonic is \",round(fourth_harmonic/10**3,0),\"KHz\"\n",
+ "print\"(c) Minimum sampling rate is \",round(min_sampling/10**3,0),\"KHz\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The frequency of the signal is 14.0 KHz\n",
+ "(b) The fourth harmonic is 56.0 KHz\n",
+ "(c) Minimum sampling rate is 112.0 KHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.2 Page no 222"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "N = 14\n",
+ "discrete_levels = 2.0**N\n",
+ "\n",
+ "#Calculation\n",
+ "num_vltg_inc =2**N-1\n",
+ "resolution = 12/discrete_levels \n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The numbedr of discrete levels that are represented using N number of bits are \",discrete_levels\n",
+ "print\"(b) the number odf voltage increments required to divide the voltage range are \",num_vltg_inc\n",
+ "print\"(c) Resolution of the digitization \",round(resolution*10**6,2),\"microvolt\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The numbedr of discrete levels that are represented using N number of bits are 16384.0\n",
+ "(b) the number odf voltage increments required to divide the voltage range are 16383\n",
+ "(c) Resolution of the digitization 732.42 microvolt\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.3 Page no 225"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "N =12\n",
+ "SINAD1=78\n",
+ "\n",
+ "#Calculation\n",
+ "SINAD2 = 6.02*N + 1.76\n",
+ "ENOB =(SINAD1 -1.76)/6.02\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The SINAD for 12 bit convertre is \",SINAD2,\"db\"\n",
+ "print\"(b) The ENOB for the converter with SINAD of 78 dB is \",round(ENOB,2),\"bits\" \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The SINAD for 12 bit convertre is 74.0 db\n",
+ "(b) The ENOB for the converter with SINAD of 78 dB is 12.66 bits\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.4 Page no 233"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Gievn\n",
+ "Vm = 1.0\n",
+ "Vin = 0.25\n",
+ "mu =255\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "Vout = (Vm*log(1+mu*(Vin/Vm)))/log(1+mu)\n",
+ "gain =Vout/Vin\n",
+ "\n",
+ "#Result\n",
+ "print\"The output voltage of the compander \",round(Vout,2),\"volt\"\n",
+ "print\"Gain of the compander is \",round(gain,0)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The output voltage of the compander 0.75 volt\n",
+ "Gain of the compander is 3.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.5 Page no 234"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "Vin = 0.8\n",
+ "Vm =1.0\n",
+ "mu =255\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "Vout = (Vm*math.log(1+mu*(Vin/Vm)))/math.log(1+mu)\n",
+ "gain =Vout/Vin\n",
+ "\n",
+ "#Result\n",
+ "print\"The output voltage of the compander \",round(Vout,1),\"volt\"\n",
+ "print\"Gain of the compander is \",round(gain,1)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The output voltage of the compander 1.0 volt\n",
+ "Gain of the compander is 1.2\n"
+ ]
+ }
+ ],
+ "prompt_number": 14
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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