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need to align the rotation

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This commit is contained in:
Ahmet Inan 2023-02-10 09:15:52 +01:00
commit e57afffecf
2 changed files with 4 additions and 3 deletions
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5
decode.cc
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@ -73,7 +73,7 @@ public:
SchmidlCox(const cmplx *sequence) : threshold(value(0.2*match_len), value(0.3*match_len))
{
#if 0
#if 1
fsh.omega(-1, symbol_len);
#endif
for (int i = 0; i < symbol_len; ++i)
@ -84,7 +84,8 @@ public:
}
bool operator()(const cmplx *samples)
{
cmplx P = cor(fsh() * samples[search_pos] * conj(samples[search_pos+symbol_len+guard_len]));
cmplx S = fsh();
cmplx P = conj(S) * cor(S * samples[search_pos] * conj(samples[search_pos+symbol_len+guard_len]));
value R = value(0.5) * pwr(norm(samples[search_pos]) + norm(samples[search_pos+symbol_len+guard_len]));
value min_R = 0.0001 * symbol_len;
R = std::max(R, min_R);

2
encode.cc
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@ -68,7 +68,7 @@ struct Encoder
CODE::MLS seq(0b1100111);
for (int i = 0; i < symbol_len; ++i)
fdom[i] = 0;
#if 0
#if 1
fdom[first_subcarrier+1] = std::sqrt(value(2 * symbol_len) / value(subcarrier_count));
for (int i = first_subcarrier + 2; i < first_subcarrier + subcarrier_count + 1; ++i)
fdom[i] = fdom[i-1] * cmplx(nrz(seq()));