mirror of
https://github.com/aicodix/modem.git
synced 2026-04-27 14:30:34 +00:00
99b6a4e963
using SPC(64800, 43072): mode 6: 8PSK, 2700 Hz BW and about 10 seconds long mode 7: 8PSK, 2500 Hz BW and about 11 seconds long mode 8: QPSK, 2500 Hz BW and about 16 seconds long mode 9: QPSK, 2250 Hz BW and about 18 seconds long using SPC(64512, 43072): mode 10: 8PSK, 3200 Hz BW and about 9 seconds long mode 11: 8PSK, 2400 Hz BW and about 11 seconds long mode 12: QPSK, 2400 Hz BW and about 16 seconds long mode 13: QPSK, 1600 Hz BW and about 24 seconds long
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
/*
|
|
Table generator for frozen bits
|
|
|
|
Copyright 2021 Ahmet Inan <inan@aicodix.de>
|
|
*/
|
|
|
|
#include <cmath>
|
|
#include <cassert>
|
|
#include <iostream>
|
|
#include <algorithm>
|
|
#include <functional>
|
|
#include "polar_freezer.hh"
|
|
|
|
template <int M>
|
|
void code(int N, int K)
|
|
{
|
|
long double erasure_probability = (long double)(N - K) / N;
|
|
double design_SNR = 10 * std::log10(-std::log(erasure_probability));
|
|
std::cerr << "design SNR: " << design_SNR << std::endl;
|
|
auto freeze = new CODE::PolarCodeConst0<M>;
|
|
double better_SNR = design_SNR + 1.59175;
|
|
std::cerr << "better SNR: " << better_SNR << std::endl;
|
|
long double better_probability = std::exp(-pow(10.0, better_SNR / 10));
|
|
auto frozen = new uint32_t[1<<(M-5)];
|
|
(*freeze)(frozen, M, K+(1<<M)-N, better_probability);
|
|
delete freeze;
|
|
|
|
std::cout << "static const uint32_t frozen_" << std::dec << N << "_" << K << "[" << (1<<(M-5)) << "] = { " << std::hex;
|
|
for (int i = 0; i < 1<<(M-5); ++i)
|
|
std::cout << "0x" << frozen[i] << ", ";
|
|
std::cout << "};" << std::endl;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
code<16>(64512, 43040+32);
|
|
code<16>(64800, 43040+32);
|
|
return 0;
|
|
}
|