UmTRX

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189 discussions

Manuel showing how to put all the Umtrx V2 package components together
by Manoel Aposaz 10 Sep '13

10 Sep '13

Hello 1- i want to know if there is a manual showing how to put all the part of the package togheter. 2- If i want to know the frequencies that is not use in an area, what can i install to let GNU radio communicate with Umtrx to show me the frequency graph that will help me choose the non used frequencies (it is possible with USRP and i want to know how to do it with Umtrx). 3- My last question is to know if handover is possible with just OpenBTS 2.8 and Umtrx modules or it required an OpenBSC and OsmoBTS architecture. Thanks, Best Regards

1 0

Technical Support
by batool yasser 05 Sep '13

05 Sep '13

Dear Sir, please i need help, I am getting started using myriad-rf board, i need to connect between TMS320C6670 Evaluation Module (Texas Instrument) and myriad-rf board, i want to know if the DE0-Nano interface board is the right choice to interface between two platforms? And if there is any other interface board ? please contact me If you need more details. Thanks in advance Regards, Batool --------- Eng.Batool Yasser Sales & Technical Support Engineer Description: Description: Description: Description: Description: Description: Description: Description: cid:image001.gif@01CD7A12.2E11C950 CST - Middle East (LLC) Computer Simulation Technology Sakr Quraish Buildings 9, Sheraton Heliopolis, Cairo, Egypt Tel. : +20 222 680 678 Mobile : +20 01027992189 Fax : +20 222 686 899

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The Difference of Signal Strength From Two Channels on The Same Board is Big
by jiangwy 05 Aug '13

05 Aug '13

Hi Alexander Chemeris, According to rx_multi_samples , I write a program to receive samples from two channels on the same board. The program receive samples from 2 channels and calculate the signal strength respectively. The signal is from a BTS arround. I find the difference of signal strength is very big, about 20dB, and channel 1 is bigger than channel 0. I exchange the antenna and feeder of the them, but the result is same. I think there is some problem, but I cann't find it. Would you please give me some sugguestion? Best Regards. Jiang Wenyi

3 9

How about the UmSEL
by jiangwy 28 Jul '13

28 Jul '13

Hi Alexander Chemeris, How about the UmSEL? What time can We try to use the UmSEL? Best Regards. Jiang Wenyi

2 1

Public installation powered by UmTRX
by Alexander Chemeris 28 Jul '13

28 Jul '13

Hi all, Just want to let you know what kept us busy recently - we've deployed UmTRX based UmSITE base station at two big events in the Netherlands: http://fairwaves.ru/news/2013-07-24-open-source-telecom-rocks-at-Dutch-even… The installation used UmTRX and 2W amplifiers for RF hardware and ran OsmoBTS/OsmoNITB/LCR/Freeswitch stack for software. A couple of bugs fixed, a couple of bugs workarounded, but generally it provided good service and users are very happy. More news and more real life testing to come! -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

1 0

How to syncronizing two UmTRXs
by jiangwy 24 Jul '13

24 Jul '13

Hi All, I have two UmTRXs v2. How to make the clock of them syncronized? Jiang Wenyi

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transceiver starting error
by jiangwy 21 Jul '13

21 Jul '13

Hi All, I install all the OpenBTS and UHD packages according to manual pages. When I start transceiver, it output some errors and exit. $ sudo ./transceiver 1 linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.000-unknown ALERT 3048163072 19:59:34.7 UHDDevice.cpp:345:set_rates: Failed to set master clock rate ALERT 3048163072 19:59:34.7 UHDDevice.cpp:346:set_rates: Actual clock rate 1.3e+07 ALERT 3048163072 19:59:34.7 runTransceiver.cpp:94:main: Transceiver exiting... Jiang Wenyi

2 1

Fwd: Crash of UmTRX transceiver with dual TRX
by Alexander Chemeris 15 Jul '13

15 Jul '13

Hi Thomas, Could you look into this crash dump of the OpenBTS transceiver? We're trying to run the version from the umtrx_dual_test branch with OsmoBTS. ---------- Forwarded message ---------- From: Andreas Eversberg <andreas(a)eversberg.eu> Date: Mon, Jul 8, 2013 at 12:05 PM Subject: Crash of UmTRX transceiver with dual TRX To: Alexander Chemeris <alexander.chemeris(a)gmail.com> using umtrx_dual_test will cause this crash. even when only using a single trx as usual. openbsc osmo-trx # sh /root/run.umtrx net.core.rmem_max = 50000000 net.core.wmem_max = 524288 linux; GNU C++ version 4.5.4; Boost_104900; UHD_003.004.000-unknown transceiver: radioInterface.cpp:329: virtual void RadioInterface::pullBuffer(): Assertion `num_rd == (625)' failed. /root/run.umtrx: line 4: 15668 Aborted (core dumped) /files/projects/gsm/osmo-trx/Transceiver52M/transceiver (gdb) bt full #0 0xb77b1424 in __kernel_vsyscall () No symbol table info available. #1 0xb71a92b1 in raise () from /lib/libc.so.6 No symbol table info available. #2 0xb71aaa8e in abort () from /lib/libc.so.6 No symbol table info available. #3 0xb71a213b in ?? () from /lib/libc.so.6 No symbol table info available. #4 0xb71a21f6 in __assert_fail () from /lib/libc.so.6 No symbol table info available. #5 0x08050562 in RadioInterface::pullBuffer (this=0x85bd3c8) at radioInterface.cpp:329 num_rd = 135212791 __FUNCTION__ = "pullBuffer" __PRETTY_FUNCTION__ = "virtual void RadioInterface::pullBuffer()" #6 0x08050ba3 in RadioInterface::driveReceiveRadio (this=0x85bd3c8) at radioInterface.cpp:254 tN = <optimized out> symbolsPerSlot = <optimized out> rcvSz = <optimized out> readSz = <optimized out> samplesPerBurst = <optimized out> #7 0x08051d63 in DriveLoop::driveReceiveFIFO (this=0x85bdc38) at DriveLoop.cpp:245 No locals. #8 0x08052f60 in RadioDriveLoopAdapter (drive=0x85bdc38) at DriveLoop.cpp:291 No locals. #9 0xb7795f07 in start_thread () from /lib/libpthread.so.0 No symbol table info available. #10 0xb726864e in clone () from /lib/libc.so.6 No symbol table info available. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

3 24

LMS6002DCalibration
by jiangwy 11 Jul '13

11 Jul '13

Hi All, I use the following functions to calibration uhd_cal_tx_dc_offset uhd_cal_tx_iq_balance uhd_cal_rx_iq_balance I got three *.csv files in .uhd/cal/{rx_iq_cal_v0.1_38.A.csv tx_iq_cal_v0.1_38.A.csv tx_dc_cal_v0.1_38.A.csv} How can I use the contents in these files? ~$ cat .uhd/cal/tx_dc_cal_v0.1_38.A.csv name, TX Frontend Calibration serial, 38.A timestamp, 1373370847 version, 0, 1 DATA STARTS HERE lo_frequency, correction_real, correction_imag, measured, delta 9.3e+08, 0.0046875, 0.0101563, -105.406, 32.9285 9.302e+08, 0.0046875, 0.0101563, -99.0923, 26.9516 9.304e+08, 0.0046875, 0.0101563, -102.352, 29.6946 9.306e+08, 0.0046875, 0.0101563, -104.045, 31.523 9.308e+08, 0.0046875, 0.0101563, -103.354, 30.8814 9.31e+08, 0.0046875, 0.0101563, -108.024, 35.4699 9.312e+08, 0.0046875, 0.0101563, -110.951, 38.5388 9.314e+08, 0.00546875, 0.0101563, -99.2159, 26.6738 9.316e+08, 0.0046875, 0.0101563, -103.085, 30.5324 9.318e+08, 0.00546875, 0.0101563, -104.854, 32.0656 9.32e+08, 0.0046875, 0.0101563, -111.759, 38.9142 9.322e+08, 0.0046875, 0.0101563, -101.731, 29.0089 9.324e+08, 0.0046875, 0.0101563, -107.722, 35.0989 9.326e+08, 0.00546875, 0.0101563, -107.25, 34.6358 9.328e+08, 0.0046875, 0.0101563, -109.739, 37.0523 9.33e+08, 0.0046875, 0.0101563, -111.463, 38.951 9.332e+08, 0.0046875, 0.0101563, -112.302, 39.8637 9.334e+08, 0.0046875, 0.0101563, -110.057, 37.4139 9.336e+08, 0.0046875, 0.0101563, -103.617, 31.0364 9.338e+08, 0.0046875, 0.0101563, -104.47, 31.8644 9.34e+08, 0.00546875, 0.0101563, -103.053, 30.3361 9.342e+08, 0.0046875, 0.0101563, -106.426, 33.7277 9.344e+08, 0.0046875, 0.0101563, -112.463, 39.6667 9.346e+08, 0.0046875, 0.0101563, -106.765, 34.1277 9.348e+08, 0.00546875, 0.0101563, -126.977, 54.3251 9.35e+08, 0.00546875, 0.0101563, -103.487, 30.8681 Jiang Wenyi

2 1

How to Get libusrp
by jiangwy 10 Jul '13

10 Jul '13

Hi All, I want to build kal-v0.4.1. When use CXXFLAGS='-W -Wall -O3' ./configure Output errors: configure: error: Package requirements (usrp >= 3.3) were not met: No package 'usrp' found I'm using ubuntu 12.04. How can I install libusrp? ' sudo apt-get install libusrp-dev' not working! Jiang Wenyi

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