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chest_dl: fixed interpolation for 4 ports

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master
Ismael Gomez 9 years ago
parent daf8731009
commit 7a00833cab
1 changed files with 10 additions and 2 deletions
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12
srslte/lib/ch_estimation/chest_dl.c
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@ -245,7 +245,11 @@ static void interpolate_pilots(srslte_chest_dl_t *q, cf_t *pilot_estimates, cf_t
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(7), &cesymb(11), &cesymb(8), 3); srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(7), &cesymb(11), &cesymb(8), 3);
srslte_interp_linear_vector2(&q->srslte_interp_linvec, &cesymb(7), &cesymb(11), &cesymb(11), &cesymb(12), 2); srslte_interp_linear_vector2(&q->srslte_interp_linvec, &cesymb(7), &cesymb(11), &cesymb(11), &cesymb(12), 2);
} else { } else {
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(8), &cesymb(1), &cesymb(0), 1); srslte_vec_sub_ccc(&cesymb(1), &cesymb(8), q->srslte_interp_linvec.diff_vec, q->srslte_interp_linvec.vector_len);
srslte_vec_sc_prod_cfc(q->srslte_interp_linvec.diff_vec, (float) 1/7, q->srslte_interp_linvec.diff_vec,
q->srslte_interp_linvec.vector_len);
srslte_vec_sum_ccc(q->srslte_interp_linvec.diff_vec, &cesymb(1), &cesymb(0), q->srslte_interp_linvec.diff_vec);
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(8), &cesymb(2), 6); srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(8), &cesymb(2), 6);
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(8), &cesymb(9), 5); srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(8), &cesymb(9), 5);
} }
@ -256,7 +260,11 @@ static void interpolate_pilots(srslte_chest_dl_t *q, cf_t *pilot_estimates, cf_t
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(6), &cesymb(9), &cesymb(7), 2); srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(6), &cesymb(9), &cesymb(7), 2);
srslte_interp_linear_vector2(&q->srslte_interp_linvec, &cesymb(6), &cesymb(9), &cesymb(9), &cesymb(10), 2); srslte_interp_linear_vector2(&q->srslte_interp_linvec, &cesymb(6), &cesymb(9), &cesymb(9), &cesymb(10), 2);
} else { } else {
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(7), &cesymb(1), &cesymb(0), 1); srslte_vec_sub_ccc(&cesymb(1), &cesymb(7), q->srslte_interp_linvec.diff_vec, q->srslte_interp_linvec.vector_len);
srslte_vec_sc_prod_cfc(q->srslte_interp_linvec.diff_vec, (float) 1/6, q->srslte_interp_linvec.diff_vec,
q->srslte_interp_linvec.vector_len);
srslte_vec_sum_ccc(q->srslte_interp_linvec.diff_vec, &cesymb(1), &cesymb(0), q->srslte_interp_linvec.diff_vec);
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(7), &cesymb(2), 5); srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(7), &cesymb(2), 5);
srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(7), &cesymb(8), 4); srslte_interp_linear_vector(&q->srslte_interp_linvec, &cesymb(1), &cesymb(7), &cesymb(8), 4);
} }

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