搜索资源列表
decode_ldpc_APP_LLR
- LDPC译码算法，采用优化算法APP LLR-LDPC decoding algorithm using optimization algorithms APP NBC
2Tx_2Rx_STBC_MAP
- 该文件夹为空时块码－卷积码级联系统的仿真程序，天线配置为2发2收。 主要程序的用途说明： mainMIMO_OFDMA_2Tx_Convcode.m: 主程序，设置各种参数 gendatabits.m: 生成原始信息比特数据的程序 conv_encoder.m: 卷积码编码器 interleave.m: 交织器 mod_2Tx_STBC_DFUSC_Convcode.m：调制程序 gen_SUI_CorrCIR.m: 生成信道冲击响应的程序 get_perfect
ldpcdecoderandencoder
- 这是国标数字电视地面传输标准里信道编解码器的MATLAB程序，用的是LLR-BP的解码算法，请大家指正。另有根据国标生成的生成矩阵和校验矩阵稍后传上来
MaxLogMAPDecoding
- Max Log MAP decoding
LDPC
- ldpc编码，随机生成H矩阵，LLR-BP算法译码，有我详细的注解，非常详尽-ldpc coding, randomly generated H matrix, LLR-BP decoding algorithm, with my detailed notes, very detailed
LDPCdemo
- lDPC编解码程序，以MATLAB为其开发环境，采用的是LLR BP译码，对LDPC码编程有帮助。-codec lDPC procedures to MATLAB for their development environment, using the LLR BP decoding of LDPC codes assist programming there is.
QPSK_chain
- Simulation of a baseband QPSK mod/demod: TX : a pseudo random bit stream generation, Serial to parallel conversion, QPSK Mapping (Gray coding), Signal power computation Channel : AWGN channel RX: Soft Demapping / Hard Demapping, Plot constellat
Soft_demapping_8PSK
- soft Demapping 8PSK : LLR computation using Euclidian distance approach, Parallel-to-Serial converter, needs I and Q componets of 8PSK symbols at the input
Hard_decision_demapping_8PSK
- Demapping 8PSK : LLR computation using Euclidian distance approach, Parallel-to-Serial converter, Hard decision, needs I and Q componets of 8PSK symbols at the input
simLLRvsHD_
- simulation LLR and Hardware
QPSK.LLR
- illustrates the improvement in BER performance when using log-likelihood instead of hard decision demodulation in a convolutionally coded communication link-illustrates the improvement in BER performance when using log-likelihood instead of hard d
turboDecoder
- Turbo decoder under awgn channel. -The input is: uncoded bits,coded bits 1,coded bits2(interleaved), LLR from other source(if use only one turbo code ,fill all zero is ok), numbers of iterations, interleaver between two CC, source bit,decoder id(
audio-qualities
- 1、顺序后退法特征选择算法 2、SFFS 特征选择算法 3、ISD算法 4、LLR算法 5、CZD算法-1, the order backward method of feature selection algorithm 2, SFFS feature selection algorithm 3, ISD algorithm 4, LLR algorithm 5, CZD algorithm
LLREXM
- LLR仿真 157循环编码 llr译码 BPSK信号高斯噪声-LLR 157 loop simulation BPSK signal decoding coded llr Gaussian noise
LLR decoding for 64 QAM
- thiese programs very helpful in LLR decoding algorithm which is used in turbo code or LDPC decoder with 64 QAM modulation
obj_evaluation
- 多种语音信号质量评判工具，包括pesq、LLR、坂仓距离等。-This folder contains implementations of objective measures，include：PESQ measure，Likelihood-ratio measure，takura-Saito measure and so on.
myldpc1
- ldpc的LLR译码，可以根据自己的需要修改参数，调制方式为bpsk-ldpc the LLR decoded parameters can be modified according to their needs, modulation scheme bpsk
logbptest
- 采用对数域消息传递算法（LLRBP）的LDPC码译码方案，用matlab程序编写。-Logarithmic domain message passing algorithm (LLR BP) LDPC code decoding program, a program written in matlab.
LDPC码编译码算法的研究与实现_李会雅
- 本文首先介绍了几种LDPC码的编译码算法，同时推导了译码错误概率和密度进化 过程，讨论了信道参数的门限效应。接着对LDPC码二分图中长度为4的环进行了深入 研究，提出了一种LDPC码校验矩阵的消4一环生成算法，采用Matlab和VC++融合编程 方式，完成了此算法的程序设计。此算法不仅可生成二进制LDPC码的校验矩阵，并且 对算法修正后，也可生成多进制LDPC码的校验矩阵。采用此算法后可避免LDPC码译 码过程中的重复迭代，显著提高了短帧LDPC码的误比特率性能。同时对不同参数对 L