文件名称:5G 中的 SCMA Turbo 学习
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- 上传时间:2021-09-27
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文件大小:19.17mb
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稀疏码多址 (SCMA) 是最近设计的一种扩展技术,其中 QAM 符号被映射到不同的 OFDMA 音调。基于码本的映射可以看作是一种扩频编码过程,其中整形增益有助于提高频谱效率并增强系统性能。本文基于 SCMA 编码方案,提出了一种联合多用户检测 (MUD) 和信道解码方法,应用了“turbo 原理”。与传统的分离检测和解码方案相比,turbo检测性能更好,增益更高,复杂度适中。在此之上,提出了一种改进方法,即在迭代之前修改外在信息。改进是基于信息的可靠性,保持可靠的信息并减少不可靠的信息。具体而言,提出了两种方案进行参数选择。这些方法将信息分布建模为混合高斯模型 (GMM),自适应方法使用期望最大化 (EM) 算法进行参数估计。所提出的方法在纠错方面的表现甚至优于“turbo 原理”,并有望应用于其他 Turbo 系统。
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压缩包 : scma_turbo-master.zip 列表 scma_turbo-master/ scma_turbo-master/LDPC/ scma_turbo-master/LDPC/DVB_16200_12.txt scma_turbo-master/LDPC/MN_4000.txt scma_turbo-master/LDPC/M_1944_1_2.txt scma_turbo-master/LDPC/M_2304_12.txt scma_turbo-master/LDPC/M_576_12.txt scma_turbo-master/LDPC/M_648_1_2.txt scma_turbo-master/LDPC/M_9216_4608.txt scma_turbo-master/LDPC/ldpc.fig scma_turbo-master/LDPC/ldpc.m scma_turbo-master/LDPC/ldpc.mat scma_turbo-master/LDPC/ldpc_scma_rayleigh.txt scma_turbo-master/LDPC/ldpc_scma_v1.txt scma_turbo-master/LDPC_H/ scma_turbo-master/LDPC_H/DAVEY1.M scma_turbo-master/LDPC_H/DAVEY2.M scma_turbo-master/LDPC_H/Gallager_gen_LDPC.m scma_turbo-master/LDPC_H/PEG.m scma_turbo-master/LDPC_H/davey1_tt.m scma_turbo-master/LDS CDMA/ scma_turbo-master/LDS CDMA/MN_4000.txt scma_turbo-master/LDS CDMA/M_1944_1_2.txt scma_turbo-master/LDS CDMA/MatszhN120_160.txt scma_turbo-master/LDS CDMA/MatszhN160_120_12_16.txt scma_turbo-master/LDS CDMA/MatszhN160_120_3_4.txt scma_turbo-master/LDS CDMA/MatszhN160_120_6_8.txt scma_turbo-master/LDS CDMA/MatszhN160_120_9_12.txt scma_turbo-master/LDS CDMA/MatszhN16_12_3_4.txt scma_turbo-master/LDS CDMA/MatszhN16_12_3_4_sample.txt scma_turbo-master/LDS CDMA/MatszhN16_12_6_8.txt scma_turbo-master/LDS CDMA/MatszhN240_120_2_4.txt scma_turbo-master/LDS CDMA/MatszhN240_120_3_6.txt scma_turbo-master/LDS CDMA/MatszhN240_120_4_8.txt scma_turbo-master/LDS CDMA/MatszhN24_12_1_2.txt scma_turbo-master/LDS CDMA/MatszhN24_12_2_4.txt scma_turbo-master/LDS CDMA/MatszhN24_12_3_6.txt scma_turbo-master/LDS CDMA/MatszhN24_12_4_8.txt scma_turbo-master/LDS CDMA/MatszhN24_12_5_10.txt scma_turbo-master/LDS CDMA/Mylds.m scma_turbo-master/LDS CDMA/hs_err_pid19164.log scma_turbo-master/LDS CDMA/lds1216QpskComplex.mat scma_turbo-master/LDS CDMA/lds1216_complex.m scma_turbo-master/LDS CDMA/lds1216_complex.mat scma_turbo-master/LDS CDMA/lds1216_complex_LDPC.m scma_turbo-master/LDS CDMA/lds1216_complex_LDPC.mat scma_turbo-master/LDS CDMA/lds1216_qpsk_complex.m scma_turbo-master/LDS CDMA/lds1224_complex.m scma_turbo-master/LDS CDMA/ldscdmaenergytest.m scma_turbo-master/LDS CDMA/regularMatrix.m scma_turbo-master/LDS CDMA/regularMatrixQPSK.m scma_turbo-master/NBLDPC.Matlab/ scma_turbo-master/NBLDPC.Matlab/Matlab/ scma_turbo-master/NBLDPC.Matlab/Matlab/Convert_Binary_2_NonBinary_LDPC.m scma_turbo-master/NBLDPC.Matlab/Matlab/Export_Multiply_Inverse_Table_File.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary LDPC编解码程序说明.docx scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_ConvertMatrixFile.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_ConvertMatrixFile_Optimized.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_Decoder_BP.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_Encoder_Check.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_Encoder_GaussEliminate.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_GaussEliminate.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_GenerateTable.m scma_turbo-master/NBLDPC.Matlab/Matlab/NonBinary_LDPC_LoadMatrixFile.m scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/ scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/GF.128.TABLE.mat scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/GF.128.mat scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/GF.16.mat scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/GF.32.TABLE.mat scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/GF.32.mat scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/GF.64.TABLE.mat scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/GF.64.mat scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/Table.GF.128.txt scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/Table.GF.16.txt scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/Table.GF.32.txt scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/Table.GF.4.txt scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/Table.GF.64.txt scma_turbo-master/NBLDPC.Matlab/Matlab/TABLE/Table.GF.8.txt scma_turbo-master/NBLDPC.Matlab/Matlab/matrix/ scma_turbo-master/NBLDPC.Matlab/Matlab/matrix/L20R2A.K.512.GF.32.txt scma_turbo-master/NBLDPC.Matlab/Matlab/matrix/divsalar.UNBLDPC.K.64.GF.256.txt scma_turbo-master/NBLDPC.Matlab/Matlab/nonbinary_add.m scma_turbo-master/NBLDPC.Matlab/Matlab/nonbinary_inverse.m scma_turbo-master/NBLDPC.Matlab/Matlab/nonbinary_multiply.m scma_turbo-master/NBLDPC.Matlab/Matlab/sim_ber.m scma_turbo-master/NBLDPC.Matlab/Matlab/test_gauss_eliminate.m scma_turbo-master/NBLDPC.Matlab/Matlab/test_sys.m scma_turbo-master/NBLDPC.Matlab/Mex.CPP/ scma_turbo-master/NBLDPC.Matlab/Mex.CPP/Copy_of_Decode_CPP.v.1.0.cpp scma_turbo-master/NBLDPC.Matlab/Mex.CPP/Decode_CPP.cpp scma_turbo-master/NBLDPC.Matlab/Mex.CPP/Decode_CPP.mexw64 scma_turbo-master/NBLDPC.Matlab/Mex.CPP/Initial_CPP.cpp scma_turbo-master/NBLDPC.Matlab/Mex.CPP/Initial_CPP.mexw64 scma_turbo-master/NBLDPC.Matlab/Mex.CPP/NBLDPC_AWGN_BPSK.m scma_turbo-master/NBLDPC.Matlab/Mex.CPP/NonBinary_LDPC_Encoder_GaussEliminate.m scma_turbo-master/NBLDPC.Matlab/Mex.CPP/NonBinary_LDPC_GaussEliminate.m scma_turbo-master/NBLDPC.Matlab/Mex.CPP/NonBinary_LDPC_GenerateTable.m scma_turbo-master/NBLDPC.Matlab/Mex.CPP/NonBinary_LDPC_LoadMatrixFile.m scma_turbo-master/NBLDPC.Matlab/Mex.CPP/TABLE/ scma_turbo-
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