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86 commits

Author SHA1 Message Date
Ahmet Inan
e900853840 cleaned up scaling 2025-07-01 09:24:27 +02:00
Ahmet Inan
838155c063 skew pilot and reserved tones 2025-07-01 08:26:28 +02:00
Ahmet Inan
50429635a0 cleaned up names 2025-07-01 06:32:55 +02:00
Ahmet Inan
efe5b9421d interleave reserved tones with data subcarriers 2025-06-30 21:47:08 +02:00
Ahmet Inan
d5c4bb25f5 added helper arrays 2025-06-30 14:39:03 +02:00
Ahmet Inan
8bcfd30426 added setup methods 2025-06-30 13:30:08 +02:00
Ahmet Inan
4b99f82aac use the first 32 comb pilots to signal the mode 2025-06-30 12:36:35 +02:00
Ahmet Inan
4430de392b also use 32 reserved tones for QAM64 2025-06-28 11:57:40 +02:00
Ahmet Inan
0089c8cb30 comb distance and offset are constant now 2025-06-28 11:30:53 +02:00
Ahmet Inan
5760675679 always use 32 reserved tones 2025-06-28 10:22:38 +02:00
Ahmet Inan
09ada3d10f always use 32 comb type pilots 2025-06-28 08:41:47 +02:00
Ahmet Inan
91090f0cac moved transition into the middle 2025-06-27 14:11:23 +02:00
Ahmet Inan
c4bcf6de1b precompute weights 2025-06-27 14:11:23 +02:00
Ahmet Inan
ab5a0ed683 replaced synchronization symbol with two longer symbols 2025-06-27 14:11:23 +02:00
Ahmet Inan
02c7e6d3f2 added clamp lambda 2025-06-27 10:21:30 +02:00
Ahmet Inan
77719cc63b added more shuffles 2025-06-25 16:39:28 +02:00
Ahmet Inan
4cb15194aa replaced Fisher-Yates shuffle with XorShiftMask mapping 2025-06-25 12:35:32 +02:00
Ahmet Inan
f92a24eb5a use non-systematic polar codes 2025-06-25 11:54:53 +02:00
Ahmet Inan
a56466c08f added support for multiple input and output files 2024-01-25 17:26:36 +01:00
Ahmet Inan
6523f6f701 added scale parameter 2024-01-24 14:55:47 +01:00
Ahmet Inan
2d765a78fd start parity bits early, as we use a crc at the end 2024-01-21 11:01:18 +01:00
Ahmet Inan
d69dd7aa03 use parity aided polar codes 2024-01-20 23:13:58 +01:00
Ahmet Inan
ad5f0e04ea removed rattlegram modes 2024-01-20 18:16:30 +01:00
Ahmet Inan
390a11e5dc revised modes to better amortize the preamble cost 
.. and to have a larger minimum size payload of 256 bytes
 2024-01-05 13:24:49 +01:00
Ahmet Inan
c597ac3398 added rattlegram modes 2024-01-03 18:12:48 +01:00
Ahmet Inan
88e8a3ad94 replaced frequency offset paramter with operation mode 2024-01-03 17:22:12 +01:00
Ahmet Inan
41472f6f77 allow up to 10% of constellation point distance 2023-12-26 13:48:49 +01:00
Ahmet Inan
fff6c60bbe added six new modes 
Mode 23: DQPSK, 1/2-rate code, 1600 Hz bandwidth and 1.08 seconds
Mode 24: DQPSK, 3/4-rate code, 1600 Hz bandwidth and 1.08 seconds
Mode 25: QAM16, 1/2-rate code, 1700 Hz bandwidth and 1.08 seconds
Mode 26: QAM16, 3/4-rate code, 1700 Hz bandwidth and 1.08 seconds
Mode 27: QAM64, 2/3-rate code, 1900 Hz bandwidth and 1.26 seconds
Mode 28: QAM64, 3/4-rate code, 1900 Hz bandwidth and 1.26 seconds
 2023-12-26 11:28:56 +01:00
Ahmet Inan
b93079de81 compensate using comb type pilots 2023-12-18 13:23:13 +01:00
Ahmet Inan
71cc33e481 do unlimited clipping before the PCM writer does it 2023-12-18 10:13:32 +01:00
Ahmet Inan
d978bb0be6 base modulation order from mod_bits 2023-12-17 11:45:01 +01:00
Ahmet Inan
513664a0e3 shuffle the code bits 2023-12-16 08:30:47 +01:00
Ahmet Inan
dc1a5b2ef7 removed the extra pilot block 2023-12-16 08:05:17 +01:00
Ahmet Inan
7a87215eb3 doubled symbols and payload size 2023-12-15 20:17:38 +01:00
Ahmet Inan
cd9d912711 changed four QPSK symbols to two QAM16 symbols 2023-12-15 19:14:58 +01:00
Ahmet Inan
d1a2ec19f0 added three new, non-differential modes 2023-12-15 18:38:54 +01:00
Ahmet Inan
a37246b7a0 limit the amount of damage clipping can do 2023-12-15 12:51:54 +01:00
Ahmet Inan
4d63fc5df0 keep it simple 2023-12-15 11:54:11 +01:00
Ahmet Inan
ae4d601e96 added reserved tones parameter 2023-12-15 11:44:47 +01:00
Ahmet Inan
5eb0e100a7 let's seem them both work together 2023-12-15 10:50:29 +01:00
Ahmet Inan
ace307de9c increased amplitude to see PAPR reduction work 2023-12-15 10:45:50 +01:00
Ahmet Inan
c8f1096474 allow up to a hundred iterations 2023-12-15 10:35:16 +01:00
Ahmet Inan
0b99170d62 eight reserved tones are enough 2023-12-14 16:56:34 +01:00
Ahmet Inan
d32860f7af derive from number of reserved tones 2023-12-14 16:56:34 +01:00
Ahmet Inan
c851ed2a5a stop papr reduction if goal is reached 2023-12-14 16:56:27 +01:00
Ahmet Inan
d3a37c9e83 use the tone reservation technique to improve PAPR 2023-12-14 10:51:43 +01:00
Ahmet Inan
bf382cfe77 improved some names 2023-12-14 10:23:21 +01:00
Ahmet Inan
b2c0e56c4f compute the complex PAPR 
even though we only use the real part
 2023-12-14 09:14:58 +01:00
Ahmet Inan
0cf139ddaf we already are oversampled 2023-12-14 08:51:25 +01:00
Ahmet Inan
7c693b1075 set default CFO to 1500 Hz 2023-03-08 08:32:39 +01:00