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{
"metadata": {
"name": "",
"signature": "sha256:9296826215472ab3953ede0f25f030039fac7730dff1e65f4c0713a4c12b00b0"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"CHAPTER 6 - Frequency Management and Channel Assignment "
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 6.1 - PG NO.159"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#page no. 159\n",
"K=4.\n",
"tbw=20.*10.**6.#total bandwidth\n",
"cbwpc=25.*10.**3.#channel bandwidth/simplex channel\n",
"n=2.#in a duplex link no of channels\n",
"dcbw=n*cbwpc#duplex channel bandwidth\n",
"N=tbw/dcbw\n",
"N1=N/K\n",
"print '%s %d %s' %('total no. of duplex channels =',N,'channels')\n",
"print '%s %d %s' %('no.of channels per cell-site =',N1,'channels')\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"total no. of duplex channels = 400 channels\n",
"no.of channels per cell-site = 100 channels\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 6.4 - PG NO.162"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#page no. 162\n",
"K=4.\n",
"N=9.#no.of cells in 1 cluster\n",
"tbw=60.*10.**6.#total bandwidth\n",
"cbwpc=25.*10.**3.#channel bandwidth/simplex channel\n",
"n=2.#in a duplex link no of channels\n",
"dcbw=n*cbwpc#duplex channel bandwidth\n",
"N=tbw/dcbw\n",
"\n",
"sbw=10.**6.#bandwidth for setup channels\n",
"N1=sbw/dcbw#total no.of available setup channels\n",
"print'%s %.f %s' %('total no.of available setup channels =',N1,'channels')\n",
"\n",
"vbw=tbw-sbw\n",
"N2=vbw/dcbw#total no. of available voice channels\n",
"\n",
"print'%s %.f %s' %('total no.of available voice channels =',N2,'voice channels')\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"total no.of available setup channels = 20 channels\n",
"total no.of available voice channels = 1180 voice channels\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 6.5 - PG NO.164"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#page no.164\n",
"NV=168.\n",
"N=7.\n",
"NVpc=NV/N#number of voice channels omnidirectional case\n",
"\n",
"NS=3.\n",
"NScl=N*NS\n",
"NcS=NV/NScl #number of voice channels 3-sector\n",
"\n",
"NS1=6.\n",
"NScl1=N*NS1\n",
"NcS1=NV/NScl1 #number of voice channels 6-sector\n",
"\n",
"print'%s %.f' %('number of voice channels assigned in each cell is =',NVpc)\n",
"\n",
"print'%s %.f' %('number of voice channels assigned in each sector(3-sector case) is =',NcS)\n",
"\n",
"print'%s %.f' %('number of voice channels assigned in each sector(6-sector case) is =',NcS1)\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"number of voice channels assigned in each cell is = 24\n",
"number of voice channels assigned in each sector(3-sector case) is = 8\n",
"number of voice channels assigned in each sector(6-sector case) is = 4\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 6.10 - PG NO.173"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#page no. 173\n",
"import math\n",
"R2=20.\n",
"N=7.\n",
"R1=R2/2.6\n",
"A=round(3.*math.sqrt(3.)/2.*R1**2.)#size of smaller cell\n",
"print'%s %.f %s' %('size of each smaller cell is =',A,'kmsqr')\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"size of each smaller cell is = 154 kmsqr\n"
]
}
],
"prompt_number": 5
}
],
"metadata": {}
}
]
}
|
