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diff --git a/Electronic_Communication_Systems/Chapter18.ipynb b/Electronic_Communication_Systems/Chapter18.ipynb new file mode 100755 index 00000000..b9594307 --- /dev/null +++ b/Electronic_Communication_Systems/Chapter18.ipynb @@ -0,0 +1,107 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:b47d42851a95b239c1a54b9b998eec602c81d678d0f92705fab117d580600a10" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 18: Information Theory, Coding And Data Communication" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 18.1, page no. 591" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "# Variable Declaration\n", + "SNR_dB = 32.00 # Signal to Noise ratio (dB)\n", + "f1 = 300.00 # Lower Limit of Voice Frequency (Hz)\n", + "f2 = 3400.0 # Upper Limit of Voice Frequency (Hz)\n", + "\n", + "# Calculation\n", + "import math # Math Library\n", + "SNR = pow(10,SNR_dB/10) # Signal to Noise Ratio\n", + "C = (f2-f1)*math.log(1+SNR,2) # Capacity of Telephone Channel (bps)\n", + "\n", + "# Result\n", + "print \"The capacity of a standard 4 kHz telephone channel with 32 dB SNR is C =\",round(C,1),\"bits per second.\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The capacity of a standard 4 kHz telephone channel with 32 dB SNR is C = 32956.3 bits per second.\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 18.2, page no. 591" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "# Variable Declaration\n", + "SNR_dB = 28.00 \t # Signal to Noise ratio (dB)\n", + "BW1 = 4.00*pow(10,3) # System Bandwidth 1 (Hz)\n", + "BW2 = 8.00*pow(10,3) # System Bandwidth 2 (Hz)\n", + "\n", + "# Calculation\n", + "import math # Math Library\n", + "SNR1 = pow(10,SNR_dB/10) # Signal to Noise Ratio 1\n", + "C1 = BW1*math.log(1+SNR1,2) # Information Carrying Capacity (bps)\n", + "SNR2 = pow(10,SNR_dB/10)/2 # Signal to Noise Ratio 2\n", + "C2 = BW2*math.log(1+SNR2,2) # Information Carrying Capacity (bps)\n", + "\n", + "# Result\n", + "print \"(a) The information carrying capacity of a standard 4 kHz telephone channel with 28 dB SNR is C1 =\",round(C1),\"bits per second.\"\n", + "print \"(b) The information carrying capacity of a standard 8 kHz telephone channel with same signal power as in (a) is C2 =\",round(C2),\"bits per second.\"\n", + "print \" Also the ratio of the two quantities, C2/C1 =\",round(C2/C1,3)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "(a) The information carrying capacity of a standard 4 kHz telephone channel with 28 dB SNR is C1 = 37215.0 bits per second.\n", + "(b) The information carrying capacity of a standard 8 kHz telephone channel with same signal power as in (a) is C2 = 66448.0 bits per second.\n", + " Also the ratio of the two quantities, C2/C1 = 1.786\n" + ] + } + ], + "prompt_number": 5 + } + ], + "metadata": {} + } + ] +}
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