OpenBTS: E110 Kalibrasi Clock

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Download ttsou Kal

Download dari mesin lain & scp ke E110 

https://github.com/ttsou/kalibrate-uhd/zipball/master
cd ~/Downloads
scp ttsou-kalibrate-uhd-8200e28.zip root@192.168.0.148:

Atau via git (kadang gagal sih ini) 

cd ~/src
git clone git://github.com/ttsou/kalibrate-uhd.git kalibrate-uhd

Compile FFTW3

Download dari 

http://www.fftw.org/download.html

Lakukan 

mv fftw-3.3.2.tar.gz ~/src
cd ~/src
tar zxvf fftw-3.3.2.tar.gz
cd ~/src/fftw-3.3.2
./configure --enable-float --enable-sse --enable-shared --disable-static
make clean
make
make all
make check
make install
ldconfig

Alternatif Lain

Install dari repo 

opkg update
opkg install libfftw3

Referensi

Compile

Jika di download via web 

opkg remove --force-depends fftwf fftwf-dev task-sdk-gnuradio-native
opkg install fftwf fftwf-dev task-sdk-gnuradio-native
cd ~
mv ttsou-kalibrate-uhd-8200e28.zip src/
cd src
unzip ttsou-kalibrate-uhd-8200e28.zip 
cd ~/src/ttsou-kalibrate-uhd-8200e28
./bootstrap && CXXFLAGS='-W -Wall -O3' ./configure && make


Jika di download via git 

opkg remove --force-depends fftwf fftwf-dev task-sdk-gnuradio-native
opkg install fftwf fftwf-dev task-sdk-gnuradio-native
cd ~/src/kalibrate-uhd
./bootstrap && CXXFLAGS='-W -Wall -O3 -fPIC' ./configure && make


Error fftw3

Saat ./configure keluar error 

checking for FFTW3... configure: error: Package requirements (fftw3 >= 3.0) were not met:

No package 'fftw3' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables FFTW3_CFLAGS
and FFTW3_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.


SOLUSI:

Mungkin dengan -fPIC dalam CFLAGS jadi 

cd ~/src/kalibrate-uhd
./bootstrap && CXXFLAGS='-W -Wall -O3 -fPIC' ./configure && make

Alternatif lain, install source fftw3 dari http://www.fftw.org/download.html

Melakukan Kalibrasi

Gunakan Kalibrate atau Kalibrate-UHD untuk mengukur offset frekuensi, 

[root@openBTS kal-0.2]# ./kal -f 946600000 -u
USRP side: B
FPGA clock: 52000000
Decimation: 192
Antenna: RX2
Sample rate: 270833.343750
average [min, max] (range, stddev)
501.351685 [461, 546] (85, 19.314581)
overruns: 0
not found: 0

Referensi

Pranala Menarik

Persiapan

Script

OpenBTS 2.6

OpenBTS 2.8

Multi OpenBTS 2.8

OpenBTS 3.1.x

Ettus E110

Ettus N210

RangeNetworks

GPRS

Briker OpenBTS

FreeSWITCH OpenBTS

Power Amplifier

Lain Lain

Catatan Legal dan Pendukung

Catatan Sejarah

Dokumentasi Video

Perjuangan OpenBTS

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