Robert Schmidt
8107939f08
- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly
For automated changes based on OAI PL v1.1:
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml
The rest (cmake, files with missing license, cmake) manually.
98 lines
3.5 KiB
C
98 lines
3.5 KiB
C
/*
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* SPDX-License-Identifier: LicenseRef-CSSL-1.0
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*/
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#include "PHY/CODING/nrSmallBlock/nr_small_block_defs.h"
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#include "assertions.h"
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#include "PHY/sse_intrin.h"
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#if defined(__AVX512F__)
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#include <simde/x86/avx512.h>
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// simde current version missed this instruction
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#define simde_mm512_reduce_add_epi32 _mm512_reduce_add_epi32
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#define simde_mm512_cvtepi8_epi32 _mm512_cvtepi8_epi32
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#endif
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//#define DEBUG_DECODESMALLBLOCK
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//input = [d̂_0] [d̂_1] [d̂_2] ... [d̂_31]
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//output = [? ... ? ĉ_K-1 ... ĉ_2 ĉ_1 ĉ_0]
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uint16_t decodeSmallBlock(int8_t *in, uint8_t len){
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uint16_t out = 0;
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AssertFatal(len >= 3 && len <= 11, "[decodeSmallBlock] Message Length = %d (Small Block Coding is only defined for input lengths 3 to 11)", len);
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if(len<7) {
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int16_t Rhat[NR_SMALL_BLOCK_CODED_BITS] = {0}, Rhatabs[NR_SMALL_BLOCK_CODED_BITS] = {0};
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uint16_t maxVal;
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uint8_t maxInd = 0;
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uint8_t jmax = (1<<(len-1));
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for (int j = 0; j < jmax; ++j)
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for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k)
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Rhat[j] += in[k] * hadamard32InterleavedTransposed[j][k];
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for (int i = 0; i < NR_SMALL_BLOCK_CODED_BITS; i += 16) {
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simde__m256i a15_a0 = simde_mm256_loadu_si256((simde__m256i*)&Rhat[i]);
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a15_a0 = simde_mm256_abs_epi16(a15_a0);
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simde_mm256_storeu_si256((simde__m256i*)(&Rhatabs[i]), a15_a0);
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}
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maxVal = Rhatabs[0];
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for (int k = 1; k < jmax; ++k){
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if (Rhatabs[k] > maxVal){
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maxVal = Rhatabs[k];
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maxInd = k;
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}
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}
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out = properOrderedBasis[maxInd] | ( (Rhat[maxInd] > 0) ? (uint16_t)0 : (uint16_t)1 );
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#ifdef DEBUG_DECODESMALLBLOCK
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for (int k = 0; k < jmax; ++k)
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printf("[decodeSmallBlock]Rhat[%d]=%d %d %d %d\n",k, Rhat[k], maxVal, maxInd, ((uint32_t)out>>k)&1);
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printf("[decodeSmallBlock]0x%x 0x%x\n", out, properOrderedBasis[maxInd]);
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#endif
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} else {
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uint8_t maxRow = 0, maxCol = 0;
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int16_t maxVal = 0;
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int DmatrixElementVal = 0;
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#if !defined(__AVX512F__)
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int8_t DmatrixElement[NR_SMALL_BLOCK_CODED_BITS] = {0};
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#endif
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simde__m256i _in_256 = simde_mm256_loadu_si256 ((simde__m256i*)&in[0]);
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simde__m256i _maskD_256, _Dmatrixj_256, _maskH_256, _DmatrixElement_256;
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for (int j = 0; j < ( 1<<(len-6) ); ++j) {
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_maskD_256 = simde_mm256_loadu_si256 ((simde__m256i*)(&maskD[j][0]));
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_Dmatrixj_256 = simde_mm256_sign_epi8 (_in_256, _maskD_256);
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for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k) {
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_maskH_256 = simde_mm256_loadu_si256 ((simde__m256i*)(&hadamard32InterleavedTransposed[k][0]));
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_DmatrixElement_256 = simde_mm256_sign_epi8 (_Dmatrixj_256, _maskH_256);
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#if defined(__AVX512F__)
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DmatrixElementVal = simde_mm512_reduce_add_epi32(
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simde_mm512_add_epi32(simde_mm512_cvtepi8_epi32(simde_mm256_extracti128_si256(_DmatrixElement_256, 1)),
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simde_mm512_cvtepi8_epi32(simde_mm256_castsi256_si128(_DmatrixElement_256))));
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#else
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simde_mm256_storeu_si256((simde__m256i*)(&DmatrixElement[0]), _DmatrixElement_256);
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for (int i = 0; i < NR_SMALL_BLOCK_CODED_BITS; ++i)
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DmatrixElementVal += DmatrixElement[i];
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#endif
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if (abs(DmatrixElementVal) > abs(maxVal)){
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maxVal = DmatrixElementVal;
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maxRow = j;
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maxCol = k;
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}
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DmatrixElementVal=0;
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}
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}
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out = properOrderedBasisExtended[maxRow] | properOrderedBasis[maxCol] | ( (maxVal > 0) ? (uint16_t)0 : (uint16_t)1 );
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#ifdef DEBUG_DECODESMALLBLOCK
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for (int k = 0; k < NR_SMALL_BLOCK_CODED_BITS; ++k)
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printf("[decodeSmallBlock]maxRow = %d maxCol = %d out[%d]=%d\n", maxRow, maxCol, k, ((uint32_t)out>>k)&1);
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#endif
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}
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return out;
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}
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