WIP: OFDM 2438Hz
This mode is a work in progress ( WIP ).
Use case: high snr, high speed
| Parameter | Value | Comments |
|---|---|---|
| ns (Number of Symbols) | 5 | |
| np (Pilots per frame) | 52 | |
| tcp (Cyclic Prefix) | 0.004 | |
| ts (Symbol Duration) | 0.016 | |
| rs (Symbol Rate) | 62.5 | |
| nc (Number of Carriers) | 39 | |
| nuwbits (Unique Word Bits) | 24 | |
| timing_mx_thresh | 0.10 | |
| bad_uw_errors | 8 | |
| amp_est_mode | 0 | |
| amp_scale | 106E3 | |
| codename | H_16200_9720 (byte-encoded) | |
| clip_gain1 | 3.2 | |
| clip_gain2 | 0.9 | |
| tx_uw (Transmit Unique Word) | [1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1] |
Nc=39 Ts=0.016 Tcp=0.004 Ns: 5 Np: 52
Nsymperframe: 195 Nbitsperpacket: 16224 Nsamperframe: 800 Ntxtbits: 0 Nuwbits: 24 Nuwframes: 2
uncoded bits/s: 3120.0 Duration (incl post/preamble): 5.40 s
ldpc_data_bits_per_frame = 9720
ldpc_coded_bits_per_frame = 16200
ldpc_parity_bits_per_frame = 6480
Nbitsperpacket = 16224
totalbitsperframe = 16224
SNR3kdB: 8.50 Burst offset: -0.74 SNRdB_setpoint: 7.76
Npackets: 1 Nbursts: 100 3.300000 0.800000
Peak: 16384.00 RMS: 9431.65 CPAPR: 4.80 clipped: 33.95%
foff: 0.0 Hz SNR(3k): 7.8 dB measSNR3k: 7.76 dB N: 130.69 dBofdm_ldpc_tx("test_datac.raw",'ofdm2438',1,8,'mpp','bursts',100);ofdm_ldpc_rx("test_datac.raw",'ofdm2438','packetsperburst',1)
PER @ 8dB MPP without Clipping
Raw BER..: 0.0807 Tbits: 1622400 Terrs: 130928 SNR3k: 6.65
Coded BER: 0.0069 Tbits: 972000 Terrs: 6693
Coded PER: 0.0700 Pckts: 100 Perrs: 7 Npre: 99 Npost: 1PER @ 8dB MPP with Clipping
Raw BER..: 0.0947 Tbits: 1622400 Terrs: 153620 SNR3k: 5.13
Coded BER: 0.0183 Tbits: 972000 Terrs: 17827
Coded PER: 0.1700 Pckts: 100 Perrs: 17 Npre: 99 Npost: 1PER @ 8.5dB MPP with Clipping
Raw BER..: 0.0869 Tbits: 1622400 Terrs: 140954 SNR3k: 5.42
Coded BER: 0.0099 Tbits: 972000 Terrs: 9663
Coded PER: 0.0900 Pckts: 100 Perrs: 9 Npre: 99 Npost: 1