Romain BeurdoucheandLaurent Thomas
06c81030dc
1. nrLDPC_coding_segment_encoding: Clarifying encoder parameters
The way the encoder implementation params was used could be made clearer:
* `macro_num` was always used in order to calculate segment indexes.
It is clearer to pass directly the first segment index.
* The initialisation of a common implementation parameters structure can be made clearer.
2. nrLDPC_coding_segment_encoder: Remove multi segment dimension in encoder output
The output of `LDPCencoder` was a 2D unsigned char array.
But all the segments were actually packed in the first segment, 8 bits of different segments per byte of the first segment.
So the first dimension was useless. This commit removes this dimension.
3. nrLDPC_coding_segment_encoder: Rename `nrLDPC_prepare_TB_encoding` into `nrLDPC_launch_TB_encoding`
4. nrLDPC_coding_segment_encoder: Remove the useless second rate matching for E2, one rate matching with max(E, E2) does the job.
5. nr_interleaving_ldpc: cleanup
Rewrite code to use different SIMD sizes in a linear fashion.
This means cascading preprocessor directives are used to start from a high SIMD size an decrease it progressively.
6. ldpc_encoder_optim8segmulti: linear usage of SIMD
Use cascading preprocessor directives to include different SIMD sizes and types depending on which are available on the system.
The different loops use a common index that is progressively incremented.
Also add AVX512 version of bits distribution from 8 segments into one byte.
Co-authored-by: Laurent Thomas <laurent.thomas@open-cells.com>
98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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//============================================================================================================================
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// encoder interface
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#ifndef __NRLDPC_DEFS__H__
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#define __NRLDPC_DEFS__H__
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#include <openair1/PHY/defs_nr_common.h>
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#include "openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_types.h"
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/**
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\brief LDPC encoder parameter structure
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\var n_segments number of segments in the transport block
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\var first_seg index of the first segment of the subset to encode
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within the transport block
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\var gen_code flag to generate parity check code
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0 -> encoding
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1 -> generate parity check code with AVX2
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2 -> generate parity check code without AVX2
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\var tinput time statistics for data input in the encoder
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\var tprep time statistics for data preparation in the encoder
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\var tparity time statistics for adding parity bits
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\var toutput time statistics for data output from the encoder
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\var K size of the complete code segment before encoding
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including payload, CRC bits and filler bit
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(also known as Kr, see 38.212-5.2.2)
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\var Kb number of lifting sizes to fit the payload (see 38.212-5.2.2)
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\var Zc lifting size (see 38.212-5.2.2)
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\var F number of filler bits (see 38.212-5.2.2)
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\var harq pointer to the HARQ process structure
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\var BG base graph index
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\var output output buffer after INTERLEAVING
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\var ans pointer to the task answer
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to notify thread pool about completion of the task
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*/
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typedef struct {
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unsigned int n_segments; // optim8seg
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unsigned int first_seg; // optim8segmulti
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unsigned char gen_code; //orig
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time_stats_t *tinput;
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time_stats_t *tprep;
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time_stats_t *tparity;
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time_stats_t *toutput;
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/// Size in bits of the code segments
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uint32_t K;
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/// Number of lifting sizes to fit the payload
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uint32_t Kb;
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/// Lifting size
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uint32_t Zc;
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/// Number of "Filler" bits
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uint32_t F;
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/// Encoder BG
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uint8_t BG;
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/// Interleaver outputs
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unsigned char *output;
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task_ans_t *ans;
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} encoder_implemparams_t;
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typedef int32_t(LDPC_initfunc_t)(void);
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typedef int32_t(LDPC_shutdownfunc_t)(void);
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// decoder interface
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/**
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\brief LDPC decoder API type definition
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\param p_decParams LDPC decoder parameters
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\param p_llr Input LLRs
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\param p_llrOut Output vector
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\param p_profiler LDPC profiler statistics
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*/
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typedef int32_t(LDPC_decoderfunc_t)(t_nrLDPC_dec_params *p_decParams,
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uint8_t harq_pid,
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uint8_t ulsch_id,
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uint8_t C,
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int8_t *p_llr,
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int8_t *p_out,
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t_nrLDPC_time_stats *,
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decode_abort_t *ab);
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typedef int32_t(LDPC_encoderfunc_t)(uint8_t **, uint8_t *, encoder_implemparams_t *);
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#endif
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