moving the ldpci_decoder to CODING directory

some minor changes

cmake_targets/CMakeLists.txt

@@ -1037,6 +1037,7 @@ set(PHY_SRC
   ${OPENAIR1_DIR}/PHY/CODING/ccoding_byte_lte.c
   ${OPENAIR1_DIR}/PHY/CODING/3gpplte_sse.c
   ${OPENAIR1_DIR}/PHY/CODING/crc_byte.c
+  ${OPENAIR1_DIR}/PHY/CODING/ldpc_decoder.c
   ${OPENAIR1_DIR}/PHY/CODING/3gpplte_turbo_decoder_sse_8bit.c
   ${OPENAIR1_DIR}/PHY/CODING/3gpplte_turbo_decoder_sse_16bit.c
   ${OPENAIR1_DIR}/PHY/CODING/3gpplte_turbo_decoder_avx2_16bit.c
@@ -1932,7 +1933,7 @@ target_link_libraries (dlsim_tm4
   )
 
 add_executable(ldpctest  ${OPENAIR1_DIR}/PHY/CODING/TESTBENCH/ldpctest.c)
-target_link_libraries(ldpctest m SIMU ${ATLAS_LIBRARIES})
+target_link_libraries(ldpctest m SIMU PHY ${ATLAS_LIBRARIES})
 
 foreach(myExe dlsim dlsim_tm7 ulsim pbchsim scansim mbmssim pdcchsim pucchsim prachsim syncsim)
 

openair1/PHY/CODING/TESTBENCH/ldpctest.c

@@ -27,7 +27,7 @@
 #include "SIMULATION/TOOLS/defs.h"
 
 #include "Gen_shift_value.h"
-#include "test.h"
+
 // 4-bit quantizer
 char quantize4bit(double D,double x)
 {
@@ -95,7 +95,6 @@ int test_ldpc(short No_iteration,
   double *modulated_input;
   short *channel_output_fixed;
   unsigned int i,trial=0;   
-  unsigned char crc_type;
 
 short *Gen_shift_values, *no_shift_values, *pointer_shift_values;
 short BG,Zc,Kb,nrows,ncols;
@@ -302,17 +301,16 @@ int main(int argc, char *argv[])
   
   unsigned int errors,crc_misses;
   unsigned int block_length=1280;
-short No_iteration=25;
-double rate=0.2;
+  short No_iteration=25;
+  double rate=0.2;
   double SNR,SNR_lin;
   unsigned char qbits;
+  time_stats_t time;
   
-  unsigned char NB_RB=25;
-
-  int num_pdcch_symbols = 1;
-  int subframe = 6;
+  int i=0;
 
-int i=0;
+  opp_enabled=1;
+  cpu_freq_GHz = get_cpu_freq_GHz();
 
   randominit(0);
   //logInit();
@@ -324,9 +322,9 @@ int i=0;
 
   //printf("Quantization bits %d\n",qbits);
 
-unsigned int decoded_errors[2]; // initiate the size of matrix equivalent to
+  unsigned int decoded_errors[100]; // initiate the size of matrix equivalent to
   // size of SNR
-for (SNR=-3; SNR<-2.8; SNR+=.1) {
+  for (SNR=-3.5; SNR<-2.5; SNR+=.1) {
 
     SNR_lin = pow(10,SNR/10);
     
@@ -342,22 +340,26 @@ for (SNR=-3; SNR<-2.8; SNR+=.1) {
 		      &crc_misses,
 		      &iterations);
 */
-decoded_errors[i]=test_ldpc(No_iteration,
+
+    start_meas(&time);
+    decoded_errors[i]=test_ldpc(No_iteration,
 		      rate,		     
 		      SNR_lin,   // noise standard deviation
 		      qbits,
 		      block_length,   // block length bytes
 		      NTRIALS,
 		      &errors,
+		      &crc_misses);
+    stop_meas(&time);
 
+    print_meas_now(&time, "", stdout);
 
-		      &crc_misses);
-i=i+1;
+    printf("SNR %f, BLER %f (%d/%d)\n",SNR,(float)decoded_errors[i]/(float)NTRIALS,decoded_errors[i],NTRIALS);
+
+    i=i+1;
    
   }
-printf("%d\n",decoded_errors[0]);
-printf("%d\n",decoded_errors[1]);
-//printf("%d\n",errors[2]);
+
   return(0);
 }
 

openair1/PHY/CODING/defs.h

@@ -561,4 +561,5 @@ uint32_t crcbit (uint8_t * ,
 int16_t reverseBits(int32_t ,int32_t);
 void phy_viterbi_dot11(int8_t *,uint8_t *,uint16_t);
 
+short *ldpc_decoder(short *msgChannel,short block_length,short No_iteration,double rate);
 #endif

openair1/PHY/CODING/TESTBENCH/test.h → openair1/PHY/CODING/ldpc_decoder.c

+/*
+ * 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 1.0  (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
+ *
+ * Author: Kien le Trung trung-kien.le@eurecom.fr
+ */
+
+#include <stdlib.h>
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
 
  short sign(short x) {
      return (x > 0) - (x < 0);