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Commit a9ccf1ca authored by Guy De Souza's avatar Guy De Souza
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3072 dtf/idft implementation

parent 065614f0
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Showing with 142 additions and 3 deletions
openair1/PHY/TOOLS/lte_dfts.c
View file @ a9ccf1ca
......@@ -41,7 +41,7 @@
#define ONE_OVER_SQRT3_Q15 18919
#include "PHY/sse_intrin.h"
#include "../sse_intrin.h"
#define print_shorts(s,x) printf("%s %d,%d,%d,%d,%d,%d,%d,%d\n",s,(x)[0],(x)[1],(x)[2],(x)[3],(x)[4],(x)[5],(x)[6],(x)[7])
#define print_shorts256(s,x) printf("%s %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d\n",s,(x)[0],(x)[1],(x)[2],(x)[3],(x)[4],(x)[5],(x)[6],(x)[7],(x)[8],(x)[9],(x)[10],(x)[11],(x)[12],(x)[13],(x)[14],(x)[15])
......@@ -5523,15 +5523,83 @@ void dft1536(int16_t *input, int16_t *output, int scale)
}
#include "twiddle3072.h"
// 1024 x 3
void dft3072(int16_t *input, int16_t *output)
void idft3072(int16_t *input, int16_t *output)
{
int i,i2,j;
uint32_t tmp[3][1024] __attribute__((aligned(32)));
uint32_t tmpo[3][1024] __attribute__((aligned(32)));
for (i=0,j=0; i<1024; i++) {
tmp[0][i] = ((uint32_t *)input)[j++];
tmp[1][i] = ((uint32_t *)input)[j++];
tmp[2][i] = ((uint32_t *)input)[j++];
}
idft1024((int16_t*)(tmp[0]),(int16_t*)(tmpo[0]),1);
idft1024((int16_t*)(tmp[1]),(int16_t*)(tmpo[1]),1);
idft1024((int16_t*)(tmp[2]),(int16_t*)(tmpo[2]),1);
/*
for (i=1; i<1024; i++) {
tmpo[0][i] = tmpo[0][i<<1];
tmpo[1][i] = tmpo[1][i<<1];
tmpo[2][i] = tmpo[2][i<<1];
}*/
// write_output("in.m","in",input,3072,1,1);
// write_output("out0.m","o0",tmpo[0],1024,1,1);
// write_output("out1.m","o1",tmpo[1],1024,1,1);
// write_output("out2.m","o2",tmpo[2],1024,1,1);
for (i=0,i2=0; i<2048; i+=8,i2+=4) {
ibfly3((simd_q15_t*)(&tmpo[0][i2]),(simd_q15_t*)(&tmpo[1][i2]),((simd_q15_t*)&tmpo[2][i2]),
(simd_q15_t*)(output+i),(simd_q15_t*)(output+2048+i),(simd_q15_t*)(output+4096+i),
(simd_q15_t*)(twa3072+i),(simd_q15_t*)(twb3072+i));
}
_mm_empty();
_m_empty();
}
void idft3072(int16_t *input, int16_t *output)
void dft3072(int16_t *input, int16_t *output)
{
int i,i2,j;
uint32_t tmp[3][1024] __attribute__((aligned(32)));
uint32_t tmpo[3][1024] __attribute__((aligned(32)));
for (i=0,j=0; i<1024; i++) {
tmp[0][i] = ((uint32_t *)input)[j++];
tmp[1][i] = ((uint32_t *)input)[j++];
tmp[2][i] = ((uint32_t *)input)[j++];
}
dft1024((int16_t*)(tmp[0]),(int16_t*)(tmpo[0]),1);
dft1024((int16_t*)(tmp[1]),(int16_t*)(tmpo[1]),1);
dft1024((int16_t*)(tmp[2]),(int16_t*)(tmpo[2]),1);
/*
for (i=1; i<1024; i++) {
tmpo[0][i] = tmpo[0][i<<1];
tmpo[1][i] = tmpo[1][i<<1];
tmpo[2][i] = tmpo[2][i<<1];
}*/
// write_output("out0.m","o0",tmpo[0],1024,1,1);
// write_output("out1.m","o1",tmpo[1],1024,1,1);
// write_output("out2.m","o2",tmpo[2],1024,1,1);
for (i=0,i2=0; i<2048; i+=8,i2+=4) {
bfly3((simd_q15_t*)(&tmpo[0][i2]),(simd_q15_t*)(&tmpo[1][i2]),(simd_q15_t*)(&tmpo[2][i2]),
(simd_q15_t*)(output+i),(simd_q15_t*)(output+2048+i),(simd_q15_t*)(output+4096+i),
(simd_q15_t*)(twa3072+i),(simd_q15_t*)(twb3072+i));
}
_mm_empty();
_m_empty();
}
#include "twiddle6144.h"
......@@ -19172,6 +19240,34 @@ int main(int argc, char**argv)
write_output("y2048.m","y2048",y,2048,1,1);
write_output("x2048.m","x2048",x,2048,1,1);
// NR 80Mhz, 217 PRB, 3/4 sampling
memset((void*)x, 0, 3072*sizeof(int32_t));
for (i=2;i<2506;i++) {
if ((taus() & 1)==0)
((int16_t*)x)[i] = 364;
else
((int16_t*)x)[i] = -364;
}
for (i=2*(3072-1252);i<6144;i++) {
if ((taus() & 1)==0)
((int16_t*)x)[i] = 364;
else
((int16_t*)x)[i] = -364;
}
reset_meas(&ts);
for (i=0; i<10000; i++) {
start_meas(&ts);
idft3072((int16_t *)x,(int16_t *)y);
stop_meas(&ts);
}
printf("\n\n3072-point(%f cycles)\n",(double)ts.diff/(double)ts.trials);
write_output("y3072.m","y3072",y,3072,1,1);
write_output("x3072.m","x3072",x,3072,1,1);
memset((void*)x,0,2048*sizeof(int32_t));
for (i=2;i<2402;i++) {
if ((taus() & 1)==0)
openair1/PHY/TOOLS/twiddle3072.h 0 → 100644
View file @ a9ccf1ca
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/* Twiddles generated with
twa = floor(32767*exp(-sqrt(-1)*2*pi*(0:1023)/3072));
twb = floor(32767*exp(-sqrt(-1)*2*pi*(0:2:1023)/3072));
twa2 = zeros(1,2048);
twb2 = zeros(1,2048);
twa2(1:2:end) = real(twa);
twa2(2:2:end) = imag(twa);
twb2(1:2:end) = real(twb);
twb2(2:2:end) = imag(twb);
fd=fopen("twiddle_tmp.txt","w");
fprintf(fd,"static int16_t twa3072[2048] = {");
fprintf(fd,"%d,",twa2);
fprintf(fd,"};\n");
fprintf(fd,"static int16_t twb3072[2048] = {");
fprintf(fd,"%d,",twb2);
fprintf(fd,"};\n");
fclose(fd);
*/
static int16_t twa3072[2048] = 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static int16_t twb3072[2048] = 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