5g-team
/
srsRAN_4G
mirror of https://github.com/pvnis/srsRAN_4G.git
2
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

SIMD: frequency estimate optimization

Browse Source
master
Xavier Arteaga 4 years ago committed by Xavier Arteaga
parent bf1b7b8527
commit 1f18e8a054
1 changed files with 7 additions and 9 deletions
Show Stats Download Patch File Download Diff File

16
lib/src/phy/utils/vector_simd.c
Unescape Escape View File

@ -1693,18 +1693,16 @@ float srslte_vec_estimate_frequency_simd(const cf_t* x, int len)
// Accumulate using horizontal addition // Accumulate using horizontal addition
simd_f_t _sum_re = srslte_simd_cf_re(_sum); simd_f_t _sum_re = srslte_simd_cf_re(_sum);
simd_f_t _sum_im = srslte_simd_cf_im(_sum); simd_f_t _sum_im = srslte_simd_cf_im(_sum);
for (int k = 1; k < SRSLTE_SIMD_CF_SIZE; k *= 2) { simd_f_t _sum_re_im = srslte_simd_f_hadd(_sum_re, _sum_im);
_sum_re = srslte_simd_f_hadd(_sum_re, _sum_re); for (int j = 2; j < SRSLTE_SIMD_F_SIZE; j *= 2) {
_sum_im = srslte_simd_f_hadd(_sum_im, _sum_im); _sum_re_im = srslte_simd_f_hadd(_sum_re_im, _sum_re_im);
} }
// Get accumulator // Get accumulator
srslte_simd_aligned float _sum_re_v[SRSLTE_SIMD_CF_SIZE]; srslte_simd_aligned float _sum_v[SRSLTE_SIMD_CF_SIZE];
srslte_simd_aligned float _sum_im_v[SRSLTE_SIMD_CF_SIZE]; srslte_simd_f_store(_sum_v, _sum_re_im);
srslte_simd_f_store(_sum_re_v, _sum_re); __real__ sum = _sum_v[0];
srslte_simd_f_store(_sum_im_v, _sum_im); __imag__ sum = _sum_v[1];
__real__ sum = _sum_re_v[0];
__imag__ sum = _sum_im_v[0];
} }
#endif /* SRSLTE_SIMD_CF_SIZE */ #endif /* SRSLTE_SIMD_CF_SIZE */

Write Preview
Loading…
Cancel
Save