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srsLTE
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Updated viterbi 16-bit scaling

This commit is contained in:
Ismael Gomez 2018-01-16 09:57:45 +01:00
parent d88ed887d7
commit d2e1600053
2 changed files with 4 additions and 4 deletions
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6
lib/src/phy/fec/viterbi.c
View File

@ -42,7 +42,7 @@
#define DEFAULT_GAIN 100
#define DEFAULT_GAIN_16 10000
#define DEFAULT_GAIN_16 1000
#define VITERBI_16
#ifndef LV_HAVE_AVX2
@ -423,7 +423,7 @@ int init37_avx2_16bit(srslte_viterbi_t *q, int poly[3], uint32_t framebits, bool
q->R = 3;
q->framebits = framebits;
q->gain_quant_s = 4;
q->gain_quant = DEFAULT_GAIN;
q->gain_quant = DEFAULT_GAIN_16;
q->tail_biting = tail_biting;
q->decode_s = decode37_avx2_16bit;
q->free = free37_avx2_16bit;
@ -537,7 +537,7 @@ int srslte_viterbi_decode_f(srslte_viterbi_t *q, float *symbols, uint8_t *data,
}
}
#ifdef VITERBI_16
srslte_vec_quant_fus(symbols, q->symbols_us, DEFAULT_GAIN_16/max, 32767.5, 65535, len);
srslte_vec_quant_fus(symbols, q->symbols_us, q->gain_quant/max, 32767.5, 65535, len);
return srslte_viterbi_decode_us(q, q->symbols_us, data, frame_length);
#else
srslte_vec_quant_fuc(symbols, q->symbols_uc, q->gain_quant/max, 127.5, 255, len);

2
lib/src/phy/fec/viterbi37_avx2_16bit.c
View File

@ -301,7 +301,7 @@ void update_viterbi37_blk_avx2_16bit(void *p, unsigned short *syms, int nbits, u
}
// See if we need to normalize
if (vp->new_metrics->c[0] > 25600) {
if (vp->new_metrics->c[0] > 12288) {
int i;
uint16_t adjust;