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{
"metadata": {
"name": "",
"signature": "sha256:985ad452c65fa6c321f3f5a416b2ee95d94eb6cba2ef0da1eac4d7b73a848422"
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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"chapter1 - Overview of optical fiber communications"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 1.6.1, page 1-15"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from __future__ import division\n",
"Bit_rate = 2*10**9 # bit rate of channel\n",
"# Given sequence is 010111101110\n",
"Shortest_duration = 1*(1/Bit_rate) # shortest duration is '1'\n",
"Widest_duration = 4*(1/Bit_rate) #widest duration is '1111'\n",
"Shortest_duration = Shortest_duration # seconds\n",
"Widest_duration = Widest_duration # seconds\n",
"print \"Shortest duration is %.1g seconds.\" %Shortest_duration\n",
"print \"Widest duration is %.1g seconds.\" %Widest_duration"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Shortest duration is 5e-10 seconds.\n",
"Widest duration is 2e-09 seconds.\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 1.12.1, page 1-28"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from __future__ import division\n",
"from numpy import log2\n",
"Bandwidth = 2*10**6 #Bandwidth of channel\n",
"Signal_to_Noise_ratio = 1 #Signal to Noise ratio of channel\n",
"Capacity = Bandwidth * log2(1 + Signal_to_Noise_ratio) #computing capacity\n",
"Capacity=Capacity/10**6 \n",
"print \"Maximum capacity of channel is %d Mb/sec.\" %Capacity"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Maximum capacity of channel is 2 Mb/sec.\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Question 10, page 1-31"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from __future__ import division\n",
"Bit_rate = 2*10**9 # bit rate of channel\n",
"# Given sequence is 010111101110\n",
"Shortest_duration = 1*(1/Bit_rate) # shortest duration is '1'\n",
"Widest_duration = 4*(1/Bit_rate) #widest duration is '1111'\n",
"Shortest_duration = Shortest_duration # seconds\n",
"Widest_duration = Widest_duration # seconds\n",
"print \"Shortest duration is %.1g seconds.\" %Shortest_duration\n",
"print \"Widest duration is %.1g seconds.\" %Widest_duration"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Shortest duration is 5e-10 seconds.\n",
"Widest duration is 2e-09 seconds.\n"
]
}
],
"prompt_number": 9
}
],
"metadata": {}
}
]
}
|
