94ed39f5e2
JTACS: Implementation of the Japanese variant of TACS
2017-09-01 18:42:54 +02:00
489ab9506c
TACS: Fix power levels
2017-09-01 18:42:53 +02:00
05c516ca16
SDR: Fixed stack overflow by allocating memory instead of local buffers
2017-09-01 18:42:52 +02:00
eb0c123433
C-Netz: Fixed overflow bug
2017-09-01 18:42:51 +02:00
dfdad21e3f
C-Netz: Work on system informations, metering and call queues
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- Make system informations configurable
- Simulate call mertering
- Support for call queues on busy voice channels
2017-09-01 18:42:51 +02:00
3bfba37fff
Corrected print messages in wave file processing.
2017-09-01 18:42:50 +02:00
cff7622f5c
Move mobile phone specific code from libcommon.a to libmobile.a
2017-09-01 18:42:49 +02:00
3c0bcce97b
Move German tones from common code to individual implementation
2017-09-01 18:42:48 +02:00
d2472cfca6
Emphasis: Add filter to prevent emphasis above 4000 Hz
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Remove obsolete filter from fsk.c.
2017-09-01 18:42:47 +02:00
743d147d16
SDR: Turn TX power off if requested by network
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The power level is ramped smoothly within 1 ms up or down.
R2000, AMPS and C-Netz turn off power when voice channel is not i use.
C-Netz turns off power between OgK timeslots.
2017-09-01 18:42:46 +02:00
1c2e9180a2
Radiocom 2000: Use high-pass filter to remove supervisory signal
2017-09-01 18:42:45 +02:00
ae2b0cce0c
B-Netz: Be more tollerant with quality of continuous tones
2017-09-01 18:42:44 +02:00
064d95f37e
Fixup: SDR: Show IQ data with three colors
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Use correct threshold values to display colors
2017-09-01 18:42:42 +02:00
ea7cbb8675
SDR: Add option to enable TX timestamps on UHD devices (disabled by default)
2017-08-16 18:51:47 +02:00
8489914bf0
SDR: Add time consumption debug code
2017-08-16 18:51:46 +02:00
42a87c1c2f
SDR: Name SDR TX and RX threads
2017-08-16 18:51:46 +02:00
ee61c4362b
B-Netz: Use standard deviation to determine if an FSK frame is valid or not
2017-08-16 18:51:45 +02:00
41bd9999b1
B-Netz: Add metering pulse support (Gebuehrenimpuls)
2017-08-16 18:51:44 +02:00
275be50225
R2000: Fixes
2017-08-16 18:51:43 +02:00
3afcac8342
SDR: Add option to swap RX and TX frequencies (for testing)
2017-08-10 17:42:54 +02:00
f2d439c1ae
UHD: Remove buggy sample rate check
2017-08-10 15:59:29 +02:00
999b6a2b4d
UHD: Make frequency settings more tollerant (+-100 Hz are accepted)
2017-08-09 17:27:14 +02:00
534411d660
New common FSK implementation, replaces all individual implementations
2017-08-09 17:27:13 +02:00
ffd3b848e1
Implementation of "Radiocom 2000", the analog French mobile network
2017-08-09 17:27:12 +02:00
8ce3ff455d
Add incoming answer to call control, also allow to send recall tone
2017-08-09 17:27:08 +02:00
d20b41a457
Fixed command line option for call audio device (headset)
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--call-device option now works.
Thanx to Fabricio pointing to this bug.
2017-08-08 12:54:45 +02:00
7c9ce960d7
Fixes of checking digits
2017-08-08 12:54:21 +02:00
5090f5a18d
SDR: Show IQ data with three colors to detect input overdrive
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green: up to 0.45
yellow: between 0.45 and 0.9
red: above 0.9
2017-08-08 12:54:03 +02:00
0cbd9657d2
Move Hagelbarger error correction code from NMT to common code
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It will be used by Radiocom 2000 also.
Some minor fixes and improvements apply.
2017-08-08 12:53:48 +02:00
6c64025717
Move FFSK modem from NMT to common code, so it can be used by other networks
2017-08-08 12:53:34 +02:00
92ce6d4a42
SDR: Using threads for read and write when doing resampling
2017-08-08 12:53:02 +02:00
3274812eab
NMT-900 System implementation
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NMT can now be run as 450 or 900 Network.
2017-08-08 12:52:45 +02:00
0c9de251be
NMT: Implement Hagelbarger Code
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This will correct burst errors of received messages. If the message
is too corrupted, it will be ignored, because some element may not
match then. The digits and line signals are checked for consistency,
since they are repeated serveral times in a message.
2017-08-08 12:52:29 +02:00
cd9cb9a107
Minor fix for NMT debug output
2017-07-15 12:45:20 +02:00
a088536533
Minor fix for IQ data display
2017-07-15 12:45:20 +02:00
fda224c27f
Fixing and improving SDR support (SoapySDR and UHD)
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- Soapy SDR now works.
- Channels can be selected.
- Antennas can be listed and selected.
- Device args, tune args, stream args can be specified.
2017-07-15 12:45:19 +02:00
538b4a42ec
Add wave file playback to replace TX audio
2017-07-15 07:38:16 +02:00
aa20d4e50e
Cleanup common/Makefile.am
2017-07-15 07:38:15 +02:00
557d19de66
NMT: Show trafic areas in hex and allow to select unsupported areas
2017-07-15 07:38:14 +02:00
3774519631
NMT: Fixed "use after free" bug
2017-07-15 07:38:13 +02:00
7af886c600
NMT: Fixed NMT digit decoding
2017-07-15 07:38:13 +02:00
085ceb9173
Minor fixes to compandor
2017-07-15 07:38:12 +02:00
3ce50f8ab3
AMPS: Fixes in message display and function names
2017-07-15 07:38:10 +02:00
3788b3e8a5
TACS support (variations added to AMPS code)
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These are:
- Bandwidth only 25 KHz, so lower deviations
- Data rate only 8000 KHz
- SID is called AID (Area ID)
- MIN1 coding is different
2017-07-15 07:38:09 +02:00
d52f4cd29d
NMT: Mark Benelux and Czech/Slovak networks as tested
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I have tested the network with B/NL/L and CZ/SK phones, and they work!
2017-06-15 18:28:26 +02:00
1aebedc66a
NMT: Fixed line signal description
2017-06-11 09:01:21 +02:00
7a9762e28e
NMT: Disable Supervisory signal during DMS (SMS) transfer and use Timeout
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There is no Supervisory signal during DMS transfer, so there must be
no timeout for Supervisory signal. Instead, the SMS layer will timeout
after some seconds without receiving data.
2017-06-11 08:13:52 +02:00
3e86ef95c4
B-Netz: Minor printf fix
2017-06-10 17:49:59 +02:00
19afb792b5
NMT: Fix and adjustements to supervisory signal detection
2017-06-10 17:11:47 +02:00
50b2021d21
NMT 450: Support for other European counties, like Belgium, Czech, Slovakia
2017-06-10 13:08:51 +02:00
dbdedfe1a1
AMPS: Fixed selecting right CRC values for FOCC words
2017-06-10 13:08:26 +02:00
d23672354f
Add option to set MNCC socket name (to run multiple base stations)
2017-06-10 13:08:26 +02:00
329463bb8c
SDR: Add option to give channel number
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Using SoapySDR server allows to run different networks on multi channel
SDR devices.
2017-06-10 13:08:25 +02:00
aef4cf0997
Make spectrum display nicer by plotting continuous lines between samples
2017-06-10 13:08:24 +02:00
e0534db15c
Make spectrum display a little nicer by using '|' instead of ':'
2017-06-10 13:08:23 +02:00
e653475ff7
NMT: Allow NULL (B'0000') to be used as country selector in traffic area
2017-06-10 13:08:23 +02:00
57d4d1739e
AMPS/C-Netz: Correctly release pending transaction when creating a new one
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If transactions is created, look on all channels for pending transaction
with same subscriber.
1. Remove that transaction.
2. Make channel return to IDLE.
3. Release call, if callref exists.
2017-06-10 13:08:22 +02:00
6adfcf7466
Status display
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Alows to show status of current channels and users
2017-06-10 13:08:21 +02:00
bb64c6b3ba
AMPS: Add DTX support
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When DTX is enabled (-S dtx=2 or 3), a missing SAT tone causes the receiver
to mute audio and insert a low level of comfort noise.
Also the missing SAT tone will not cause the connection to be terminated.
2017-06-10 13:08:19 +02:00
2c1ab89723
Notify about usage of channels that are next to each other
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It is required to have at least one free channel between channels, to
avoid interferences.
This is only a warning, it will not reject channels next to each other.
2017-05-24 14:01:25 +02:00
fc3b3e07be
Finetuning LOSS (noise) detection
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The algorithm is still bad, but works in most cases
2017-05-24 14:00:08 +02:00
56024b384b
AMPS: Serveral minor fixes
2017-05-23 18:11:10 +02:00
76a3484c5c
C-Netz: Make demodulation algorithm (slope or leve) slectable via option
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By default (auto), the algorithm is selected, depending on sound card
or SDR usage. For testing and debugging purpose, the algorithm can be
forced.
2017-05-19 19:11:59 +02:00
c086e66b7c
minor cleanups
2017-05-17 20:14:37 +02:00
0557bbbc43
SDR: Checking given parameters with a tollerance of up to 0.001
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Rounding errors may cause given parameters to be changed a little.
When comparing the set-values with the get-value, a small amount
of tollerance must be allowed.
Thanx to Syvain, pointing to this bug!
2017-05-17 20:06:47 +02:00
683078a7a0
SDR: Spectrum display will not scale FFT result
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Instead the greatest possible width that will fit into the window will
be used. This width is 2 to the power of N.
2017-05-17 20:06:46 +02:00
ef7ff26793
C-Netz: SDR now uses zero-crossing to detect level changes.
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This does not work with analog radio, but with SDR it works.
The quality should be better and the process is faster.
2017-05-17 20:06:46 +02:00
9d87b5bf0f
C-Netz: Improved transmission of speech
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The speech is now correctly ramped up and down during pause bits.
2017-05-17 20:06:44 +02:00
12dcc6c40f
Minor fixes on AMPS messages
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- Flipping polarity is now performed after B/I has been applied
- Correcting sysinfo
2017-05-17 20:06:43 +02:00
4d10ee7c82
No "sdr" audio device option required anymore (when using SDR)
2017-05-17 20:06:42 +02:00
ca10048e5c
Rename filter -> iir_filter (file name and instance name)
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This is useful when using fir_filter in the future.
2017-05-15 21:46:32 +02:00
d03443c4f1
SDR: Added SoapySDR's compiler flags to common/Makefile
2017-05-15 21:46:30 +02:00
c04d046210
SDR: Fixed SoapySDR's arguments parsing
2017-05-15 21:46:30 +02:00
fbdb9ece01
SDR: Allow direct IQ TX and RX instead of fm modulating a list of channels
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This is performed by reading and writing IQ data to "sample" pointer with
channel number set to 0.
2017-05-15 21:46:29 +02:00
65694f3b80
SDR: disable TX or RX by setting TX or RX frequency to 0
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This way it is possible to use SDR simplex
2017-05-15 21:46:29 +02:00
6e0e0c9ce8
fixup Rework on audio buffer management
2017-05-15 21:46:28 +02:00
9dda9e1efc
SDR: Add option to set IF bandwidth. If not defined, sampling rate is used.
2017-05-15 21:46:27 +02:00
1445ca2fac
SDR: Add option to send (previously recorded) IQ data instead of TX data
2017-05-15 21:46:26 +02:00
369bda87a9
C-Netz: Improved decoder debugging
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FM decoder debug output is now written to text files for better
debugging of process.
2017-05-15 21:46:25 +02:00
8e0d7d2513
samplerate.c: Allow transcoding to lower sample rate other than 8000 Hz
2017-03-04 16:52:20 +01:00
3fc4fc54be
main_common: Move init and cleanup function to main function
2017-03-04 07:12:12 +01:00
4201717f36
Rework on audio buffer management
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Use function to get samples to be sent to fill audio buffers to a
level. This replaces the function that only shows how much data
is in the buffer.
This way the function itself can control how much data will be
sent.
2017-03-04 06:35:38 +01:00
2e1999b1ee
Start streaming of sound/SDR just before main loop
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This prevents buffer overflow during init/creation processes
2017-02-25 07:09:53 +01:00
04fd1ddcea
Use thread to record and playback wave files without blocking
2017-02-25 06:29:09 +01:00
f689244f98
C-Netz: OgK must be on first channel, so sync works correctly
2017-02-18 21:02:56 +01:00
438ce08add
SoapySDR support
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There is no time stamp handling. It is just TX'ing in advance and
synchronous to received RX rate.
2017-02-18 21:02:55 +01:00
17b6124122
C-Netz: Remove useless -V option
2017-02-18 21:02:54 +01:00
58ebc15292
Add test to measure performance of FM modulation and filtering
2017-02-18 21:02:53 +01:00
4de1e0188d
C-Netz: Add low pass filter to eliminate high frequency noise
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This improves the FSK decoding quite allot, especially with SDR.
2017-02-18 21:02:52 +01:00
290b365d67
SDR: Move FM modulation algorithms to a seperate file
2017-02-18 21:02:51 +01:00
4c0f8e7e95
Rework of sample rate conversion by using linear interpolation
2017-02-18 21:02:51 +01:00
47f74b38ce
SDR transmits with full amplitude
2017-02-18 21:02:50 +01:00
6a3cfd608e
Add ascii-art spectrum analyzer for SDR support
2017-02-18 21:02:49 +01:00
3fb2ade352
C-Netz: Fix release of call process when no dialing was received from phone
2017-02-18 21:02:48 +01:00
0611f62b52
Show channel number and basic info when channel was created
2017-02-18 21:02:47 +01:00
5f1d7bc970
C-Netz: Improve clock speed measurements.
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Sound card's clock measurements only requires a few minutes to get sub-ppm
accuracy results.
2017-02-18 21:02:46 +01:00
54ed5d5f82
AMPS: Fixed setting of signal polarity when using SDR
2017-02-18 21:01:19 +01:00
faa3dfb7d4
C-Netz: Make average to clock measurements for a quicker result
2017-02-18 21:01:19 +01:00
5026e161aa
Open audio device for call (headset) after everything is prepared
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It is not allowed to stall after trigger reading of audio device.
2017-02-18 21:01:18 +01:00
8cb0187133
C-Netz: Remove the obviously useless noise function for unused timeslots
2017-02-18 21:01:17 +01:00
Andreas Eversberg