Working short block coding and various warning removals in --phy_simulators

2019-03-08 15:44:50 +01:00
parent 9cbfe2e3fa
commit dd61e5a717
15 changed files with 766 additions and 602 deletions
@@ -0,0 +1,117 @@
+/*
+ * 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
+ */
+
+/*!\file PHY/CODING/nrSmallBlock/decodeSmallBlock.c
+ * \brief
+ * \author Turker Yilmaz
+ * \date 2019
+ * \version 0.1
+ * \company EURECOM
+ * \email turker.yilmaz@eurecom.fr
+ * \note
+ * \warning
+*/
+
+#include "PHY/CODING/nrSmallBlock/nr_small_block_defs.h"
+#include "assertions.h"
+#include "PHY/sse_intrin.h"
+
+//#define DEBUG_DECODESMALLBLOCK
+
+uint16_t decodeSmallBlock(int8_t *in, uint8_t len){
+	uint16_t out = 0;
+
+	AssertFatal(len >= 3 && len <= 11, "[decodeSmallBlock] Message Length = %d (Small Block Coding is only defined for input lengths 3 to 11)", len);
+
+	if(len<7) {
+		int16_t Rhat[NR_SMALL_BLOCK_CODED_BITS] = {0}, Rhatabs[NR_SMALL_BLOCK_CODED_BITS] = {0};
+		uint16_t maxVal;
+		uint8_t maxInd = 0;
+
+		for (int j = 0; j < NR_SMALL_BLOCK_CODED_BITS; ++j)
+			for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k)
+				Rhat[j] += in[k] * hadamard32InterleavedTransposed[j][k];
+
+#if defined(__AVX2__)
+		for (int i = 0; i < NR_SMALL_BLOCK_CODED_BITS; i += 16) {
+			__m256i a15_a0 = _mm256_loadu_si256((__m256i*)&Rhat[i]);
+			a15_a0 = _mm256_abs_epi16(a15_a0);
+			_mm256_storeu_si256((__m256i*)(&Rhatabs[i]), a15_a0);
+		}
+#else
+		for (int i = 0; i < NR_SMALL_BLOCK_CODED_BITS; i += 8) {
+			__m128i a7_a0 = _mm_loadu_si128((__m128i*)&Rhat[i]);
+			a7_a0 = _mm_abs_epi16(a7_a0);
+			_mm_storeu_si128((__m128i*)(&Rhatabs[i]), a7_a0);
+		}
+#endif
+		maxVal = Rhatabs[0];
+		for (int k = 1; k < NR_SMALL_BLOCK_CODED_BITS; ++k){
+			if (Rhatabs[k] > maxVal){
+				maxVal = Rhatabs[k];
+				maxInd = k;
+			}
+		}
+
+		out = properOrderedBasis[maxInd] | ( (Rhat[maxInd] > 0) ? (uint16_t)0 : (uint16_t)1 );
+
+#ifdef DEBUG_DECODESMALLBLOCK
+		for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k)
+			printf("[decodeSmallBlock]Rhat[%d]=%d %d %d %d\n",k, Rhat[k], maxVal, maxInd, ((uint32_t)out>>k)&1);
+		printf("[decodeSmallBlock]0x%x 0x%x\n", out, properOrderedBasis[maxInd]);
+#endif
+
+	} else {
+		int8_t Dmatrix[NR_SMALL_BLOCK_CODED_BITS][NR_SMALL_BLOCK_CODED_BITS] = {0};
+		int16_t DmatrixFHT[NR_SMALL_BLOCK_CODED_BITS][NR_SMALL_BLOCK_CODED_BITS] = {0};
+		uint16_t maxVal;
+		uint8_t maxRow = 0, maxCol = 0;
+
+		for (int j = 0; j < NR_SMALL_BLOCK_CODED_BITS; ++j)
+			for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k)
+				Dmatrix[j][k] = in[k] * maskD[j][k];
+
+
+		for (int i = 0; i < NR_SMALL_BLOCK_CODED_BITS; ++i)
+			for (int j = 0; j < NR_SMALL_BLOCK_CODED_BITS; ++j)
+				for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k)
+					DmatrixFHT[i][j] += Dmatrix[i][k] * hadamard32InterleavedTransposed[j][k];
+
+		maxVal = abs(DmatrixFHT[0][0]);
+		for (int i = 0; i < NR_SMALL_BLOCK_CODED_BITS; ++i)
+			for (int j = 0; j < NR_SMALL_BLOCK_CODED_BITS; ++j)
+				if (abs(DmatrixFHT[i][j]) > maxVal){
+					maxVal = abs(DmatrixFHT[i][j]);
+					maxRow = i;
+					maxCol = j;
+				}
+
+		out = properOrderedBasisExtended[maxRow] | properOrderedBasis[maxCol] | ( (DmatrixFHT[maxRow][maxCol] > 0) ? (uint16_t)0 : (uint16_t)1 );
+
+#ifdef DEBUG_DECODESMALLBLOCK
+		for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k)
+					printf("[decodeSmallBlock]maxRow = %d maxCol = %d out[%d]=%d\n", maxRow, maxCol, k, ((uint32_t)out>>k)&1);
+#endif
+
+	}
+
+	return out;
+}