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2017-05-19radioInterface: Remove UmTRX 'diversity' optionTom Tsou1-2/+1
The 'diversity' option was an experimental 2 antenna receiver implementation for UmTRX. The implementation has not been maintained and current working status is unknown. In addition to code rot, Coverity is triggering errors in the associated code sections. Removal of code cleans up many cases of special handling that were necessary to accommodate the implementation. Change-Id: I46752ccf5dbcffbec806081dec03e69a0fbdcdb7
2017-01-26Fix building against sqlite3Max1-1/+1
* Explicitly check for sqlite3 at configure stage, remove old include dir, fix header inclusion. * Use configure results for linking instead of hardcoded linker option for sqlite. * Add dependency on -dev package for .deb Change-Id: I6d7f697d67651f02ceb77fc4da4317b64fa47f9e Fixes: OS#1928
2016-07-01mcbts: Add multi-ARFCN radio supportTom Tsou1-0/+1
Add new radio interface "radioInterfaceMulti" for multi-carrier support. Only USRP B200/B210 devices are supported because of sample rate requirements (3.2 Msps). Only 4 SPS operation Tx/RX is supported. 8-PSK is supported. Other options may be added at a later time Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
2016-07-01mcbts: Add multi-ARFCN channelizing filtersTom Tsou1-3/+11
Introduce polyphase channelizer (Rx) and synthesis (Tx) filterbanks, which serve as the signal processing backend for multi-carrier GSM. Fast Fourier Transform (FFT) is used internally. FFTW is added as a new build dependency. Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
2016-07-01iface: Add inner ring-buffer implementationTom Tsou1-0/+2
Two buffers, inner and outer, are used in the transceiver implementation. The outer buffer interfaces with the device receive interface to guarantee timestamp aligned and contiguously allocated sample buffers. The inner buffer absorbs vector size differences between GSM bursts (156 or 157 samples) and the resampler interface (typically fixed multiples of 65). Reimplement the inner buffer with a ring buffer that allows fixed size segments on the outer (resampler) portion and variable lengths (GSM side) on the inner side. Compared to the previous stack-like version, this implementation removes unnecessary copying of buffer contents. Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
2016-06-22makefile: Fix build from an external path.Alexander Chemeris1-1/+1
When you build from an external path, compiler can't find convert.h include, because it was specified relative to the current directory. Change this to specify the include dit relative to the Makefile location. Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
2013-11-16Transceiver52M: Create new osmo-trx executableThomas Tsou1-6/+5
Create new main executable with full command line option parsing of relevant parameters. Database configuration table still exists (and must exist because of the global gConfig object), but can be bypassed with command line options. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-15Transceiver52M: Enable all warnings and resolveThomas Tsou1-1/+1
Mainly basic signed vs unsigned comparisons and intializer ordering. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-15Transceiver52M: Add dual channel diversity receiver optionThomas Tsou1-1/+2
This patch add support for dual channel diversity on the receive path. This allows two antennas two shared antennas to be used for each ARFCN handling channel in the receiver. This configuration may improvde performance in multi-path fading environments, however, noise andpotential interference levels are increased due to the higher bandwidth used. The receive path is oversampled by a factor of four for a rate of 1.083333 Msps. If the receive paths are tuned within a maximum channel spacing (currently set at 600 kHz), then both ARFCN frequencies are processed by each channel of the receiver. Otherwise, the frequency shifted diversity path is disabled and standard non-diversity operation takes place. Diversity processing is handled by selecting the path with the higheset energy level and discarding the burst on the second path. Selection occurs on a burst-by-burst basis. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-15Transceiver52M: Separate signalVector into it's own fileThomas Tsou1-0/+2
Break out the signalVector object and clean up the interface in the process. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-15Transceiver52M: Add NEON complex-complex multiplyThomas Tsou1-1/+2
Complex-complex block multiples are used for phase rotation of bursts. Optimization targeted from perf profiling. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-15Transceiver52M: Add ARM NEON supportThomas Tsou1-2/+7
Similar to the existing Intel SSE cases, add support for NEON vector floating point SIMD processing. In this case, use ARM assembly directly as the NEON intrinsics do not generate preferential code output. Currently support NEON vectorized convolution and floating point integer conversions. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-08Transceiver52M: Remove unused files and utilitiesThomas Tsou1-24/+2
USRPping and sigProcLibTest are in an unmaintained state, while the intended functionality remains unknown. Stored filter taps are also unused and should also be removed. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-04build: Set UHD driver as default configurationThomas Tsou1-26/+8
Currently the default configuration is to not build the full transceiver, which is pointless. Set the UHD driver, which includes either Ettus or Fairwaves variants, as the default. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-11-04Transceiver52M: Separate architecture specific filesThomas Tsou1-7/+10
Move x86 specific files into their own directory as this area is about to get crowded with the addition of ARM support. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-10-18Transceiver52M: Add SSE floating point / integer conversionThomas Tsou1-2/+4
Convertions are performed in multiples of 4 or 8. All loads are considered unaligned. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-10-18Transceiver52M: Replace resampler with SSE enabled implementationThomas Tsou1-0/+2
Replace the polyphase filter and resampler with a separate implementation using SSE enabled convolution. The USRP2 (including derived devices N200, N210) are the only supported devices that require sample rate conversion, so set the default resampling parameters for the 100 MHz FPGA clock. This changes the previous resampling ratios. 270.833 kHz -> 400 kHz (65 / 96) 270.833 kHz -> 390.625 kHz (52 / 75) The new resampling factor uses a USRP resampling factor of 256 instead of 250. On the device, this allows two halfband filters to be used rather than one. The end result is reduced distortial and aliasing effecits from CIC filter rolloff. B100 and USRP1 will no be supported at 400 ksps with these changes. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-10-18Transceiver52M: Replace convolve and related calls with SSE implementationThomas Tsou1-9/+10
This large patch replaced the convolve() call with an SSE vector enabled version. The lower C and SSE intrinsic based code operates on fixed and aligned vectors for the filter taps. The storage format of interleaved I/Q for both complex and real vectors is maintained. SSE filter tap values must: 1. Start 16-byte aligned 2. Number with a multiple of 4 between 4 and 20 for real taps 3. Number with a multiple of 4 for complex taps Non-compliant values will fall back to non-SSE usage. Fixed length iterators mean that head and tail cases may require reallocation of the input vector, which is automatically handled by the upper C++ interface. Other calls are affected by these changes and adjusted or rewritten accordingly. The underlying algorithms, however, are unchanged. generateGSMPulse() analyzeTrafficBurst() detectRACHBurst() Intel SSE configuration is automatically detected and configured at build time with Autoconf macros. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2013-10-18Transceiver52M: Set resampling option automatically based on deviceThomas Tsou1-7/+1
Remove the built time resampling selection and link both options. Move the normal push/pullBuffer() calls back to the base class and overload them in the inherited resampling class. USRP2/N2xx devices are the only devices that require resampling so return that resampling is necessary on the device open(), which is the point at which the device type will be known. The GSM transceiver only operates at a whole number multiple of the GSM rate and doesn't care about the actual device rate and if resampling is used. Therefore GSM specific portion of the transceiver should only need to submit the samples-per-symbol value to the device interface. Then, the device should be able to determine the appropriate sample rate (400 ksps or 270.833 ksps) and if resampling is appropriate. Signed-off-by: Thomas Tsou <tom@tsou.cc>
2011-11-26changing config scripts to explitly target UHD/USRP1kurtis.heimerl1-0/+12
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2692 19bc5d8c-e614-43d4-8b26-e1612bc8e597
2011-11-26transceiver: enable USRP1 firmware binary installkurtis.heimerl1-4/+4
Not sure why this functionality is commented out. Make install places the FPGA firmware image in: /usr/local/share/usrp/rev2/ /usr/local/share/usrp/rev4/ Signed-off-by: Thomas Tsou <ttsou@vt.edu> git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2690 19bc5d8c-e614-43d4-8b26-e1612bc8e597
2011-11-26transceiver, resamp: insert missing filter valueskurtis.heimerl1-1/+3
With transceiver integration, the resampling filter files were dropped. This created a working resampling implementation for the USRP2 / N200, but with spectrum irregulaties that likely caused issues at longer range operation. Simply reinsert the filter files and modify the filter initialization to use them. Signed-off-by: Thomas Tsou <ttsou@vt.edu> git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2689 19bc5d8c-e614-43d4-8b26-e1612bc8e597
2011-11-26build: insert autofoo for usrp transceiver and optionskurtis.heimerl1-7/+25
Usage: ./configure --with-usrp1 Enable non-UHD USRP1 support through the gnuradio-based driver. Requires gnuradio (libusrp) to be installed. ./configure --with-resample Enable host-based 400ksps to 270.833ksps resampling. Only supported for UHD devices. If not enabled, the GSM sample rate is requested directly from the device. Signed-off-by: Thomas Tsou <ttsou@vt.edu> git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2681 19bc5d8c-e614-43d4-8b26-e1612bc8e597
2011-11-26transceiver: separate I/O portion of radio interface implementationkurtis.heimerl1-1/+2
Move push and pull of buffers into a dedicated file. This will allow us to swap out resampling, non-resampling, and possibly floating point device interfaces while presenting a single floating point abstration in the interface itself. Signed-off-by: Thomas Tsou <ttsou@vt.edu> git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2670 19bc5d8c-e614-43d4-8b26-e1612bc8e597
2011-11-26transceiver: separate radio clock and vector interfaceskurtis.heimerl1-1/+8
Remove radio clock and vector interfaces into their own files. This clears up and simplifies the radio interface and, additionaly, prepares for a further split of the I/O portion for optional resampler use. Signed-off-by: Thomas Tsou <ttsou@vt.edu> git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2669 19bc5d8c-e614-43d4-8b26-e1612bc8e597
2011-10-12Adding in the missing Transceiver52M directorydburgess1-0/+88
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2307 19bc5d8c-e614-43d4-8b26-e1612bc8e597