Updated viterbi 16-bit scaling

lib/src/phy/fec/viterbi.c

@@ -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);

lib/src/phy/fec/viterbi37_avx2_16bit.c

@@ -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;