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computingBERConvolutionalCod3.rar
Script for computing BER with Binary Convolutional Code
and Viterbi decoding.
Convolutional code of Rate-1/2, Generator polynomial - [7,5] octal
Hard decision and soft decison decoding is used.
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computingBERConvolutionalCod1.rar
Script for computing BER with Binary Convolutional Code
and Viterbi decoding with finite survivor state memory and
variable traceback depth
Convolutional code of Rate-1/2, Generator polynomial - [7,5] octal
Hard decision decoding is used. ...
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computingBERConvolutionalCod2.rar
Script for computing BER with Binary Convolutional Code
and Viterbi decoding with finite survivor state memory
Convolutional code of Rate-1/2, Generator polynomial - [7,5] octal
Hard decision and soft decison decoding is used.
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computingBERConvolutionalCode.rar
Script for computing BER with Binary Convolutional Code
and Viterbi decoding.
Convolutional code of Rate-1/2, Generator polynomial - [7,5] octal
Hard decision decoding is used.
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IS95_forward_code.rar
本程序针对高通公司开发的IS-95通信系统,是一个相对完整的IS-95前向信道的仿真源程序,包括Viterbi编码,数据调制,基于RAKE接收机的解调,实现软判决输入的Viterbi译码等模块,并包括有误码率的计算和性能仿真显示。
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cdhmm.rar
连续隐马尔可夫识别程序。
包含的模块,可以比较完整地进行语言识别。
主要模块:
Test.m
Train.m
viterbi.m
baum.m
pdf.m
recog.m
mixture.m
mfcc.m
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OFDM_code.rar
本代码是关于OFDM通信系统的仿真源程序,其中信道编码,QPSK调制,QPSK解调,FFT,IFFT,viterbi编译码,误比特统计,滤波等模块。
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ImprovedGaitRecognitionApproach.rar
:步态识别通过人体走路的姿势来识别人的身份。近年来,步态作为一种生物特征识别技术备受计算机视觉研究者的关注。对某个
人的一个步态序列利用动态 Viterbi 算法得到一个样本姿态序列,对其多个步态样本姿态序列的对应姿态取平均得到这个人的特征姿态序
列,对特征姿态采用主成分分析法和线性判别分析法处理特征空间,并用最近邻法进行识别。利用 CASIA 数据库对本文方法进行验证,
取得了较高的识别率,并对体形变化具有较强的鲁棒性
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hmmtrain.rar
1.自己推导出来的mean与covariance来train theta
2.自己推导出来的mean与covariance来跑Viterbi
3.推theta时的Gradient Descent:
Learing Rate: 0.000001
GD iter : 50 iteration
4.Scaler : 1/260
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