From 9586db6bfd3626e71b76752498190d40b9fd88c7 Mon Sep 17 00:00:00 2001
From: Romain Beurdouche <romain.beurdouche@eurecom.fr>
Date: Fri, 3 Jan 2025 13:11:46 +0000
Subject: [PATCH] fix(nrLDPC_decoder): Rename E in Kprime in segment decoder
 parameters to comply with standard naming

---
 openair1/PHY/CODING/TESTBENCH/ldpctest.c                        | 2 +-
 .../nrLDPC_coding_segment/nrLDPC_coding_segment_decoder.c       | 2 +-
 openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c             | 2 +-
 openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_types.h               | 2 +-
 openair1/PHY/CODING/nrLDPC_decoder_LYC/nrLDPC_decoder_LYC.cu    | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/openair1/PHY/CODING/TESTBENCH/ldpctest.c b/openair1/PHY/CODING/TESTBENCH/ldpctest.c
index 1dad28c95e..1d0bdfb16b 100644
--- a/openair1/PHY/CODING/TESTBENCH/ldpctest.c
+++ b/openair1/PHY/CODING/TESTBENCH/ldpctest.c
@@ -323,7 +323,7 @@ one_measurement_t test_ldpc(short max_iterations,
         decParams[j].R = code_rate_vec[R_ind]; // 13;
         decParams[j].numMaxIter = max_iterations;
         decParams[j].outMode = nrLDPC_outMode_BIT;
-        decParams[j].E = block_length;
+        decParams[j].Kprime = block_length;
         ldpc_toCompare.LDPCinit();
     }
     for (int j = 0; j < n_segments; j++) {
diff --git a/openair1/PHY/CODING/nrLDPC_coding/nrLDPC_coding_segment/nrLDPC_coding_segment_decoder.c b/openair1/PHY/CODING/nrLDPC_coding/nrLDPC_coding_segment/nrLDPC_coding_segment_decoder.c
index e1fec76e23..29d155e95c 100644
--- a/openair1/PHY/CODING/nrLDPC_coding/nrLDPC_coding_segment/nrLDPC_coding_segment_decoder.c
+++ b/openair1/PHY/CODING/nrLDPC_coding/nrLDPC_coding_segment/nrLDPC_coding_segment_decoder.c
@@ -193,7 +193,7 @@ static void nr_process_decode_segment(void *arg)
 
   memset(rdata->c, 0, Kr_bytes);
   p_decoderParms->crc_type = crcType(rdata->C, A);
-  p_decoderParms->E = lenWithCrc(rdata->C, A);
+  p_decoderParms->Kprime = lenWithCrc(rdata->C, A);
 
   // set first 2*Z_c bits to zeros
 
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c
index 4ac8f4799e..fcee71c151 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c
@@ -855,7 +855,7 @@ static inline uint32_t nrLDPC_decoder_core(int8_t* p_llr,
               nrLDPC_llr2bitPacked(p_out, p_llrOut, numLLR);
             else // if (outMode == nrLDPC_outMode_BITINT8)
               nrLDPC_llr2bit(p_out, p_llrOut, numLLR);
-            if (p_decParams->check_crc((uint8_t*)p_out, p_decParams->E, p_decParams->crc_type)) {
+            if (p_decParams->check_crc((uint8_t*)p_out, p_decParams->Kprime, p_decParams->crc_type)) {
               LOG_D(PHY, "Segment CRC OK, exiting LDPC decoder\n");
               break;
             }
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_types.h b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_types.h
index 25e78a542a..57701ce7df 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_types.h
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_types.h
@@ -86,7 +86,7 @@ typedef struct nrLDPC_dec_params {
     uint16_t Z; /**< Lifting size */
     uint8_t R; /**< Decoding rate: Format 15,13,... for code rates 1/5, 1/3,... */
     uint8_t numMaxIter; /**< Maximum number of iterations */
-    int E;
+    int Kprime; /**< Size of the payload bits and CRC bits in the code block */
     e_nrLDPC_outMode outMode; /**< Output format */
     int crc_type;
     int (*check_crc)(uint8_t* decoded_bytes, uint32_t n, uint8_t crc_type);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder_LYC/nrLDPC_decoder_LYC.cu b/openair1/PHY/CODING/nrLDPC_decoder_LYC/nrLDPC_decoder_LYC.cu
index ee08e9287c..aa85716947 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder_LYC/nrLDPC_decoder_LYC.cu
+++ b/openair1/PHY/CODING/nrLDPC_decoder_LYC/nrLDPC_decoder_LYC.cu
@@ -518,7 +518,7 @@ extern "C"  int32_t LDPCdecoder(t_nrLDPC_dec_params *p_decParams,
   init_LLR_DMA(p_decParams, p_llr, p_out);
   uint16_t Zc = p_decParams->Z;
   uint8_t BG = p_decParams->BG;
-  int block_length = p_decParams->E;
+  int block_length = p_decParams->Kprime;
   uint8_t row, col;
   if (BG == 1) {
     row = 46;