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197 Commity (4b46d3024856acf44dff719eed9ad5eca1b5ba8c)

Autor SHA1 Wiadomość Data
David Protzman 4b46d30248 Stripped down normalized cross correlator 
This new version is much more of an estimate of the cross correlation, but it's a *lot* faster.  Still need to do more real world testing of it
 2022-06-20 13:07:31 -04:00
David Protzman 2e33165cbe Turning on all available optimizations 
This is to help the correlation module run at line rate
 2022-06-20 13:06:08 -04:00
David Protzman 7606a61e8a Added runtime configurable threshold to extractor 2022-06-20 13:02:27 -04:00
David Protzman 66b749c3ad Added abs squared function 2022-06-20 12:49:02 -04:00
David Protzman 0fdac0e259 Fixed bug in running average tracking logic 2022-06-19 14:47:17 -04:00
David Protzman 10052a6b8d Converted to running average to get a small performance gain 2022-06-19 13:58:16 -04:00
David Protzman c89d6e6004 Normalization is working properly, but it's crazy slow 2022-06-19 13:42:58 -04:00
David Protzman 17f3465f3a Initial commit for normalized cross correlation function 
This is the crazy slow version!
 2022-06-11 12:56:32 -04:00
David Protzman bb791dbac5 Added functions for mean and var 2022-06-11 12:55:31 -04:00
David Protzman 5d59a14618 Updated drone_id_test GNU Radio example graph 
Increased number of extracted samples to help with processing in MATLAB
Changed default RX gain from .35 to .55
Disabled the offset block (not used for SDR based processing)
Removed the time sync block as it's no longer needed
 2022-06-09 00:32:34 -04:00
David Protzman 112454c3a8 Now saving off more vectors for debugging 2022-06-09 00:28:18 -04:00
David Protzman ad1ad97181 Fixed typo in received ZC sequence saving logic 2022-06-09 00:27:48 -04:00
David Protzman b915386ead Dropped threshold down to .2 2022-06-09 00:27:23 -04:00
David Protzman 769daa80cc Printing message if the total sample count isn't valid 
This should never happen, but for when it does...
 2022-06-09 00:27:13 -04:00
David Protzman beaeec30fc Fixed copy paste error in sample saving 2022-06-09 00:26:44 -04:00
David Protzman 3aa1b77e0b Now outputting each burst that comes into demodulation 
This used to happen in the time_sync block, but that block is no longer used
 2022-06-09 00:12:48 -04:00
David Protzman c863755ff8 Now writing out each received ZC sequence with a counter 2022-06-09 00:01:58 -04:00
David Protzman 7a3de6b0ce Increased number of samples extracted from the beginning of the burst 
This is to help MATLAB do demod since it needs a fair amount of padding before and after the burst
 2022-06-08 23:57:29 -04:00
David Protzman e36349b8a1 Now incrementing the file number for bursts coming into time sync 2022-06-08 23:56:48 -04:00
David Protzman 0729e4620e Moved the XOR_BIT_VEC to a constant static member variable 
This was being created for every burst which was just wasteful.  It was done that way because I was in a hurry =\
 2022-06-08 23:55:14 -04:00
David Protzman 4aa81eb2b9 Added CMake build dirs to ignore file 2022-06-08 23:53:35 -04:00
David Protzman 2af27b093b Many, many updates... like.. a lot 2022-05-10 00:32:30 -04:00
David Protzman 506a43c736 Made qpsk_to_bits static 2022-05-09 18:12:04 -04:00
David Protzman 736ccbe8b1 Added bit_vec_to_string and fixed write() bug 2022-05-09 18:08:29 -04:00
David Protzman c7e7587c24 Added debug path argument, and now running LTE decode 2022-05-09 18:07:55 -04:00
David Protzman 9518926892 Updated graph to include decode block 2022-05-09 00:58:00 -04:00
David Protzman 8cdc2c262b Disabled printing bits 
This was locking GNU Radio up due to the large number of console outputs
 2022-05-09 00:57:19 -04:00
David Protzman a5ce98aa54 Working on turbo decoding and rate matching 2022-05-09 00:55:46 -04:00
David Protzman 2b8b54d746 Now outputting just the data carriers 2022-05-09 00:55:18 -04:00
David Protzman 9d3b379aa7 Added util functions 
get_data_carrier_indices
extract_data_carriers
write (generic and uint32_t)
print_bits
 2022-05-09 00:54:33 -04:00
David Protzman b11ec00b7d Added actual impls for the decode block 2022-05-09 00:54:14 -04:00
David Protzman 62a384a942 Added decode block 2022-05-09 00:53:29 -04:00
David Protzman 0608c97ec1 Not outputting if debug path is empty 2022-05-08 23:41:30 -04:00
David Protzman af8ac003d9 Allowing specification of debug directory 2022-05-08 23:39:50 -04:00
David Protzman 4e8c137471 Added LTE Turbo decoder and rate matcher (now req libturbofec) 2022-05-08 23:02:54 -04:00
David Protzman 1954dff4b6 Merge branch 'main' into gr-droneid 2022-04-24 16:58:42 -04:00
David Protzman d8f7b73c37 Added function to convert between IQ formats 2022-04-24 16:57:20 -04:00
David Protzman 6c875b5014 Had to change dimensions on freq correction vector 
This happened due to a change in the read_complex_floats function
 2022-04-24 16:45:07 -04:00
David Protzman 8fe194bcd6 Added script to normalize an input vector to -1.0 to 1.0 2022-04-24 16:44:33 -04:00
David Protzman 0544182553 Now normalizing the IFFT outputs 2022-04-24 16:44:07 -04:00
David Protzman 3b1448497b Now just calling write_complex 2022-04-24 16:42:40 -04:00
David Protzman 9d259ca6fc Converted create_burst to a function 2022-04-24 15:02:38 -04:00
David Protzman 30f5ecff6e Added function to get the number of seconds since epoch 2022-04-24 15:01:59 -04:00
David Protzman 5daf3dd4cc Now using the read_complex function 2022-04-24 14:48:40 -04:00
David Protzman d57e1e880f Add function to read arbitrary type complex samples from a file 2022-04-24 14:48:29 -04:00
David Protzman f7bcb5eb55 Created function to write complex samples to disk 2022-04-24 14:29:33 -04:00
David Protzman 60ea2b16bc Converted the create_burst script to a function 2022-04-24 00:52:24 -04:00
David Protzman 40a604dd23 Added more plots 2022-04-24 00:45:05 -04:00
David Protzman df098c3e6c Fixed bug in coarse freq recovery 
The windows were one sample misaligned in time
 2022-04-24 00:42:08 -04:00
David Protzman 7d9f15b28f No longer using `vars{:}` 
Would likely end up confusing users
 2022-04-24 00:40:41 -04:00