1 Jul
2016
1 Jul
'16
2:01 p.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/osmo-trx/commit/?id=64464e6c34d3e508669b25d0c1af988…
commit 64464e6c34d3e508669b25d0c1af98895065b131
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Fri Jul 1 03:46:46 2016 -0700
egprs: Enable 8-PSK burst detection when EDGE is enabled
The command line EDGE option will enable 8-PSK burst
detection on any slot where a normal burst is expected.
The burst search order is 8-PSK first followed by GMSK.
EDGE will force 4 SPS sampling on Tx and Rx. Along with
twice the search correlation from 8-PSK and GMSK, EDGE
will increase CPU utilization. Whether the increase is
notable or not is dependent on the particular machine.
Signed-off-by: Tom Tsou <tom.tsou(a)ettus.com>
http://cgit.osmocom.org/osmo-trx/commit/?id=e88710881b3287b4f9901df8824836a…
commit e88710881b3287b4f9901df8824836ac01ef3799
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Fri Jul 1 02:46:04 2016 -0700
egprs: Enable 8-PSK length vectors on the Tx interface
Allow EGPRS 8-PSK length bit vectors of length 444 (148 * 3)
to pass in through the Tx socket interface. Length is the sole
factor in determining whether to modulate a bit vector using
GMSK or 8-PSK.
Tested with 8-PSK training sequences with random payload
originating from osmo-bts. Output verified with Agilent E4406A.
Signed-off-by: Tom Tsou <tom.tsou(a)ettus.com>
http://cgit.osmocom.org/osmo-trx/commit/?id=a84e162672b1ccca94994f132b89fb0…
commit a84e162672b1ccca94994f132b89fb024bcd15d4
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Wed Jun 29 14:50:25 2016 -0700
sigproc: Adjust burst detection threshold criteria
Reduce the burst detection threshold to pass more bursts to upper
layers, but force stricter requirements on the computation itself.
For the latter, we now require at least 5 samples (rather than 2)
to compute a peak-to-average value.
End result is increased burst detection at low SNR conditions with
a small increase in false positive bursts when no signal is present.
Signed-off-by: Tom Tsou <tom.tsou(a)ettus.com>
http://cgit.osmocom.org/osmo-trx/commit/?id=76764278169d252980853251daeb9f1…
commit 76764278169d252980853251daeb9f1ba0c246e1
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Fri Jun 24 14:25:39 2016 -0700
mcbts: Add multi-ARFCN radio support
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(a)ettus.com>
http://cgit.osmocom.org/osmo-trx/commit/?id=35222296fef378977a83a4ee89d8c3e…
commit 35222296fef378977a83a4ee89d8c3ef9bc62a3f
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Wed Jun 22 16:16:30 2016 -0700
mcbts: Add multi-ARFCN channelizing filters
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(a)ettus.com>
http://cgit.osmocom.org/osmo-trx/commit/?id=28670fb5dad8e48ff74051a5bbe0c83…
commit 28670fb5dad8e48ff74051a5bbe0c8309b04c817
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Fri Aug 21 19:32:58 2015 -0700
iface: Add inner ring-buffer implementation
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(a)ettus.com>
http://cgit.osmocom.org/osmo-trx/commit/?id=05c6feb71dd2f66b74c9e1671d91570…
commit 05c6feb71dd2f66b74c9e1671d91570485479836
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Wed Jun 22 16:09:44 2016 -0700
radioInterface: Convert diversity argument to general type
Rather than a simple bool type, convert the diversity switch
to the device interface specifer:
enum InterfaceType {
NORMAL,
RESAMP_64M,
RESAMP_100M,
DIVERSITY,
};
The more general specifier allows passing in special cases
other then selection diversity such as multi-ARFCN support.
Signed-off-by: Tom Tsou <tom.tsou(a)ettus.com>
http://cgit.osmocom.org/osmo-trx/commit/?id=2e4ed1072227350ab8dd31a8458316e…
commit 2e4ed1072227350ab8dd31a8458316e2a9355453
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Mon Jun 27 15:39:16 2016 -0700
transceiver: Add Rx samples-per-symbol option
Previous approach was to enable 4 SPS on the receive path only
for EDGE use, which is not a requirement for 4 SPS operation.
Make the 4 SPS configuration setting directly settable.
Signed-off-by: Tom Tsou <tom.tsou(a)ettus.com>
-----------------------------------------------------------------------
Summary of changes:
Transceiver52M/Channelizer.cpp | 108 ++++++++
Transceiver52M/Channelizer.h | 34 +++
Transceiver52M/ChannelizerBase.cpp | 249 +++++++++++++++++++
Transceiver52M/ChannelizerBase.h | 39 +++
Transceiver52M/Makefile.am | 17 +-
Transceiver52M/Resampler.cpp | 32 +--
Transceiver52M/Resampler.h | 9 +-
Transceiver52M/Synthesis.cpp | 121 +++++++++
Transceiver52M/Synthesis.h | 35 +++
Transceiver52M/Transceiver.cpp | 42 +++-
Transceiver52M/Transceiver.h | 3 +-
Transceiver52M/UHDDevice.cpp | 142 ++++++-----
Transceiver52M/common/fft.c | 112 +++++++++
Transceiver52M/common/fft.h | 13 +
Transceiver52M/osmo-trx.cpp | 72 ++++--
Transceiver52M/radioBuffer.cpp | 228 +++++++++++++++++
Transceiver52M/radioBuffer.h | 45 ++++
Transceiver52M/radioDevice.h | 15 +-
Transceiver52M/radioInterface.cpp | 202 ++++++---------
Transceiver52M/radioInterface.h | 58 +++--
Transceiver52M/radioInterfaceDiversity.cpp | 47 ++--
Transceiver52M/radioInterfaceMulti.cpp | 387 +++++++++++++++++++++++++++++
Transceiver52M/radioInterfaceResamp.cpp | 81 +++---
Transceiver52M/sigProcLib.cpp | 32 ++-
Transceiver52M/signalVector.cpp | 9 +
Transceiver52M/signalVector.h | 1 +
configure.ac | 1 +
27 files changed, 1771 insertions(+), 363 deletions(-)
create mode 100644 Transceiver52M/Channelizer.cpp
create mode 100644 Transceiver52M/Channelizer.h
create mode 100644 Transceiver52M/ChannelizerBase.cpp
create mode 100644 Transceiver52M/ChannelizerBase.h
create mode 100644 Transceiver52M/Synthesis.cpp
create mode 100644 Transceiver52M/Synthesis.h
create mode 100644 Transceiver52M/common/fft.c
create mode 100644 Transceiver52M/common/fft.h
create mode 100644 Transceiver52M/radioBuffer.cpp
create mode 100644 Transceiver52M/radioBuffer.h
create mode 100644 Transceiver52M/radioInterfaceMulti.cpp
hooks/post-receive
--
OpenBTS' transceiver retro-fit