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Diffstat (limited to 'Digital_Communications/ChapterNo4.ipynb')
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diff --git a/Digital_Communications/ChapterNo4.ipynb b/Digital_Communications/ChapterNo4.ipynb new file mode 100755 index 00000000..547a969e --- /dev/null +++ b/Digital_Communications/ChapterNo4.ipynb @@ -0,0 +1,273 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h1> Chpater No 4: DIGITAL MULTIPLEXERS<h1>"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4.4, page no 190 "
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Caption: Sampling Rate\n",
+ "\n",
+ "#initialisation of variables\n",
+ "f1=4.0*10**3\n",
+ "f2=4.5*10**3\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "fsmin=(2*f2)/1000\n",
+ "\n",
+ "#RESULTS\n",
+ "print(\" Sampling rate =%.2f kHz\" %fsmin)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Sampling rate =9.00 kHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4.5, Page No 190 "
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Caption: Nyquest rate,Signaling rate,bandwidth\n",
+ "\n",
+ "#initialisation of variables\n",
+ "f1=3000.0\n",
+ "f4=1000.0\n",
+ "f2=1000.0\n",
+ "f3=1000.0\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "#Nyquest rate\n",
+ "nq1=2*f1\n",
+ "nq2=2*f2\n",
+ "nq3=2*f3\n",
+ "nq4=2*f4\n",
+ "\n",
+ "#RESULTS\n",
+ "print('i. Nyquest rate of x1 =%.2fkHz' %nq1)\n",
+ "print('ii. Nyquest rate of x2 =%.2fkHz' %nq2)\n",
+ "print('iii. Nyquest rate of x3 =%.2fkHz' %nq3)\n",
+ "print('iv. Nyquest rate of x4 =%.2fkHz' %nq4)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "i. Nyquest rate of x1 =6000.00kHz\n",
+ "ii. Nyquest rate of x2 =2000.00kHz\n",
+ "iii. Nyquest rate of x3 =2000.00kHz\n",
+ "iv. Nyquest rate of x4 =2000.00kHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4.6, Page No 190 "
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Find The spacing between two successive pules\n",
+ "\n",
+ "#initialisation of variables\n",
+ "samplingrate=8000.0\n",
+ "totalsignals=24+1\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "t=1/samplingrate\n",
+ "T=t/totalsignals\n",
+ "T=T*10**6 #time is now u sec\n",
+ "space=T-1\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The spacing between two successive pules %.f u sec' %space)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The spacing between two successive pules 4 u sec\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4.7, Page No 191"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Find signaling rate ,bandwidth\n",
+ "\n",
+ "#initialisation of variables\n",
+ "N=6.0\n",
+ "fm=5000.0\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "r=2*fm #sampling rate\n",
+ "sr=N*r #signalingrate\n",
+ "BW=N*fm #Bandwith\n",
+ "sr=sr/1000\n",
+ "BW=BW/1000\n",
+ "\n",
+ "#RESULTS\n",
+ "print('Signaling rate %.f K bits/sec' %sr)\n",
+ "print('Bandwith to avoid the cross talk in TDM is %.f kHz' %BW)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Signaling rate 60 K bits/sec\n",
+ "Bandwith to avoid the cross talk in TDM is 30 kHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4.9, Page No 198"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Find signaling rate ,bandwidth\n",
+ "\n",
+ "#initialisation of variables\n",
+ "N=4.0\n",
+ "x=24 #bits/frame\n",
+ "D=1152\n",
+ "s=1.0/3\n",
+ "r=1.544*10**6\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "r0=N*r*((D+x)/(D-s*N))\n",
+ "\n",
+ "#RESULTS\n",
+ "print('Output bit rate %.2f MB/sec' %(r0/(10**6)))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Output bit rate 6.31 MB/sec\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 4.10, Page No 198"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Find signaling rate ,bandwidth\n",
+ "\n",
+ "#initialisation of variables\n",
+ "N=24.0\n",
+ "x=72.0 #bits\n",
+ "D=192 #message and stuff bits\n",
+ "s=1.0/3\n",
+ "r=64 #kb/sec\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "r0=N*r*((D+x)/(D-s*N))\n",
+ "r1=((N*r)/r0)*100\n",
+ "\n",
+ "#RESULTS\n",
+ "print('i) Output bit rate %.2f MB/sec' %(r0/(10**3)))\n",
+ "print('iI) Throughput efficiency is = %.2f percent' %r1)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "i) Output bit rate 2.20 MB/sec\n",
+ "iI) Throughput efficiency is = 69.70 percent\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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