Difference between revisions of "OpenBTS: Kalibrasi"

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* [[GNURadio]]
 
* [[GNURadio]]
 
* [[GNURadio: Ubuntu Install]]
 
* [[GNURadio: Ubuntu Install]]
* [[GNURadio: Ubuntu Install GNURadio 3.4.2]]
+
* [[GNURadio: Ubuntu Install GNURadio 3.4.2]] '''*RECOMMENDED*'''
 
* [[GNURadio: Contoh Aplikasi]]
 
* [[GNURadio: Contoh Aplikasi]]
 
* [[GNURadio: Spectrum Analizer GSM]]
 
* [[GNURadio: Spectrum Analizer GSM]]
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* [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.4.2]]
 
* [[GNURadio: Ubuntu 11.10 Instal GNURadio 3.4.2]]
 
* [[GNURadio: Ubuntu 11.10 Install dari GIT GNURadio]]
 
* [[GNURadio: Ubuntu 11.10 Install dari GIT GNURadio]]
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* [[GNURadio: Ubuntu 11.10 cek USRP Daughter Board]]
 
* [[OpenBTS: Ubuntu 11.10 Install]]
 
* [[OpenBTS: Ubuntu 11.10 Install]]
 
* [[OpenBTS: 2.8 dari SVN Install]] '''RECOMMENDED'''
 
* [[OpenBTS: 2.8 dari SVN Install]] '''RECOMMENDED'''
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* [[OpenBTS: E110 Bekerja dengan opkg]]
 
* [[OpenBTS: E110 Bekerja dengan opkg]]
 
* [[OpenBTS: E110 GNURadio]]
 
* [[OpenBTS: E110 GNURadio]]
 +
* [[OpenBTS: E110 Install UHD Image]]
 
* [[OpenBTS: E110 Instalasi OpenBTS]]
 
* [[OpenBTS: E110 Instalasi OpenBTS]]
 
* [[OpenBTS: E110 Instalasi OpenBTS 2.6]] '''*NOT RECOMMENDED*'''
 
* [[OpenBTS: E110 Instalasi OpenBTS 2.6]] '''*NOT RECOMMENDED*'''
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===Lain Lain===
 
===Lain Lain===
  
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* [[OpenBTS: Materi Magang di ICTWATCH]]
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* [[OpenBTS: Seminar Outline]]
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* [[OpenBTS: Workshop Outline]]
 
* [[Membuat Base Station GSM Open Source]]
 
* [[Membuat Base Station GSM Open Source]]
 
* [[Teknologi Selular]]
 
* [[Teknologi Selular]]

Revision as of 16:48, 1 April 2012

Sumber: http://gnuradio.org/redmine/wiki/1/OpenBTSClockCalibration


Jika kita tidak mempunyai peralatan lab yang baik dan kita ingin mengetahui akurasi clock USRP, kita dapat menggunakan aplikasi Kalibrator (Copyright (c) 2009 Joshua Lackey, Alexander Chemeris). Tentunya kita tidak mungkin memperoleh hasil yang baik seperti hi-tech lab, tapi cukup lah untuk mengetahui error kalibrasi clock yang ada.

Download

Download dari

http://thre.at/kalibrate/kal-v0.4.1.tar.bz2
git clone https://github.com/ttsou/kalibrate-uhd kalibrate-uhd

Compile

cp kal-v0.4.1.tar.bz2 /usr/local/src/
cd /usr/local/src
tar jxvf kal-v0.4.1.tar.bz2 
cd /usr/local/src/kal-v0.4.1
./bootstrap && CXXFLAGS='-W -Wall -O3' ./configure && make

Menjalankan

cd /usr/local/src/kal-v0.4.1/src/
./kal -h

Hasil

kalibrate v0.4.1, Copyright (c) 2010, Joshua Lackey

Usage:
	GSM Base Station Scan:
		kal <-s band indicator> [options]

	Clock Offset Calculation:
		kal <-f frequency | -c channel> [options]

Where options are:
	-s	band to scan (GSM850, GSM900, EGSM, DCS, PCS) 
	-f	frequency of nearby GSM base station
	-c	channel of nearby GSM base station
	-b	band indicator (GSM850, GSM900, EGSM, DCS, PCS)
	-R	side A (0) or B (1), defaults to B
	-A	antenna TX/RX (0) or RX2 (1), defaults to RX2
	-g	gain as % of range, defaults to 45%
	-F	FPGA master clock frequency, defaults to 52MHz
	-v	verbose
	-D	enable debug messages
	-h	help

Scanning 1800

Menjalankan

cd /usr/local/src/kal-v0.4.1/src/
./kal -s 1800 -F 64000000 -b DCS

Hasil

kal: Scanning for DCS-1800 base stations.
DCS-1800:
 	chan: 513 (1805.4MHz + 14.952kHz)	power: 5336.89 
	chan: 514 (1805.6MHz + 14.954kHz)	power: 1927.35
	chan: 517 (1806.2MHz + 14.952kHz)	power: 3715.71
	chan: 518 (1806.4MHz + 14.983kHz)	power: 1717.65
	chan: 519 (1806.6MHz + 14.969kHz)	power: 5159.38
	chan: 520 (1806.8MHz + 14.951kHz)	power: 2017.03
	chan: 542 (1811.2MHz + 15.092kHz)	power: 4554.77
	chan: 544 (1811.6MHz + 15.084kHz)	power: 3730.97
	chan: 569 (1816.6MHz + 15.181kHz)	power: 6196.37
	chan: 570 (1816.8MHz + 15.172kHz)	power: 1924.81
	chan: 613 (1825.4MHz + 15.237kHz)	power: 15746.19
	chan: 614 (1825.6MHz + 15.242kHz)	power: 6683.53
	chan: 616 (1826.0MHz + 15.260kHz)	power: 12953.63
	chan: 617 (1826.2MHz + 15.248kHz)	power: 4816.39
	chan: 620 (1826.8MHz + 15.224kHz)	power: 4274.58
	chan: 625 (1827.8MHz + 15.268kHz)	power: 3613.13
	chan: 626 (1828.0MHz + 15.313kHz)	power: 1926.56
	chan: 627 (1828.2MHz + 15.274kHz)	power: 3536.15
	chan: 628 (1828.4MHz + 15.267kHz)	power: 2346.39
	chan: 629 (1828.6MHz + 15.288kHz)	power: 7923.44
 	chan: 632 (1829.2MHz + 15.316kHz)	power: 5417.85
 	chan: 633 (1829.4MHz + 15.312kHz)	power: 2652.96
   	chan: 689 (1840.6MHz + 15.602kHz)	power: 3734.25
 	chan: 692 (1841.2MHz + 15.587kHz)	power: 11674.51
	chan: 693 (1841.4MHz + 15.586kHz)	power: 5294.69

Scanning 900

Menjalankan

cd /usr/local/src/kal-v0.4.1/src/
./kal -s 900 -F 64000000 -b GSM900

Hasil

kal: Scanning for GSM-900 base stations.
GSM-900:

Scanning 850

Menjalankan

cd /usr/local/src/kal-v0.4.1/src/
./kal -s 850 -F 64000000

Hasil

Scanning Channel

Menjalankan

cd /usr/local/src/kal-v0.4.1/src/
./kal -c 513 -F 64000000 -b DCS

Hasil

kal: Calculating clock frequency offset.
Using DCS-1800 channel 513 (1805.4MHz)
average		[min, max]	(range, stddev)
+ 17.109kHz		[17087, 17136]	(50, 14.080007)
overruns: 0
not found: 0

Referensi

Pranala Menarik

Persiapan

OpenBTS 2.6

OpenBTS 2.8

Ettus E110

Lain Lain

Catatan Legal dan Pendukung

Catatan Sejarah