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small performance improvements for perfect channel estimation in dlsim

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This commit is contained in:
Florian Kaltenberger
2016-01-08 15:44:52 +01:00
parent 6011553117
commit f0982d3147
3 changed files with 13 additions and 10 deletions
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openair1/SIMULATION/TOOLS/abstraction.c
+2 -2
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@@ -64,7 +64,7 @@ int init_freq_channel(channel_desc_t *desc,uint16_t nb_rb,int16_t n_samples)
delta_f = nb_rb*180000/(n_samples-1);
for (f=-(n_samples>>1); f<(n_samples>>1); f++) {
for (f=-(n_samples>>1); f<=(n_samples>>1); f++) {
freq=delta_f*(double)f*1e-6;// due to the fact that delays is in mus
cos_lut[f+(n_samples>>1)] = (double *)malloc((int)desc->nb_taps*sizeof(double));
@@ -122,7 +122,7 @@ int freq_channel(channel_desc_t *desc,uint16_t nb_rb,int16_t n_samples)
start_meas(&desc->interp_freq);
for (f=-n_samples_max/2,f2=-n_samples/2; f<n_samples_max/2; f+=d,f2++) {
for (f=-n_samples_max/2,f2=-n_samples/2; f<=n_samples_max/2; f+=d,f2++) {
clut = cos_lut[n_samples_max/2+f];
slut = sin_lut[n_samples_max/2+f];