Commit graph

15 commits

Author SHA1 Message Date
Thomas Kolb 665ccd7f84 Added TRX test over UDP
The idea is to simulate the RF channel by a UDP “connection” between two
hosts.
2019-10-16 22:55:26 +02:00
Thomas Kolb 0ff97ff980 Flowgraph cleanup 2019-10-14 21:45:33 +02:00
Thomas Kolb 718cf6366e Completed test flow graph port to GR 3.8 2019-09-19 00:20:23 +02:00
Thomas Kolb 9cd866b2ba Converted some test flow graphs to GR 3.8
(not working yet)
2019-09-16 23:31:57 +02:00
Thomas Kolb da4c9e08d4 Increased robustness of feed-forward freq. correction
- Increased pilot sequence length to 16 symbols
- Calculate phase difference from start for all symbols instead of
  averaging over pilot blocks
2019-09-14 23:36:04 +02:00
Thomas Kolb 1c287466db Added interleaver 2019-09-14 01:23:26 +02:00
Thomas Kolb 85ce667d7b Added more pilot symbols for precision frequency estimation
This adds 4 pilot symbols each after 128 and 256 data symbols. These are
used for precision frequency estimation and feed-forward correction,
resulting in less decoder errors at the end of the packet.

Due to this change, this system can no longer transmit packets shorter
than 64 bytes!
2019-09-13 23:10:23 +02:00
Thomas Kolb 950124e218 Added frequency offset to RX 2019-08-10 17:23:18 +02:00
Thomas Kolb 9e7dcaf678 Added scrambler, improved mod, demod and test flow graphs 2019-08-04 01:44:35 +02:00
Thomas Kolb 014fd28f22 First try on IP RX/TX with HackRF 2019-08-01 00:08:04 +02:00
Thomas Kolb 1f04ebdb9a Added channel coding test flowgraph 2019-07-31 21:47:31 +02:00
Thomas Kolb 84afe7515b Moved RX flow graph to separate hier block 2019-07-31 21:46:55 +02:00
Thomas Kolb 4aea636999 Test flowgraphs: completed TX-RX chain
Now the receiver test flowgraph can demodulate the signal generated by
the TX, including synchronization, error correction and CRC checking.
2019-07-30 23:49:54 +02:00
Thomas Kolb 664d8fe0e6 Backup commit for the 16 QAM flowgraph
Now with closed-loop frequency estimation!
2019-07-23 23:20:49 +02:00
Thomas Kolb 55cfbd7ab0 Added 16-QAM modulator as GRC hier block + test flowgraph 2019-06-20 17:02:57 +02:00