FPGA Implementation of Convolutional Code Encoding and Viterbi Decoding Algorithm [PDF]
, 2005 探讨了卷积码编码及其Viterbi译码算法的FPGA(Field-ProgrammableGateArray)实现,根据编码器的结构,分别采用了有限状态机转换的编码法和基于流水线结构的状态转换译码法,有效地提高了编译码的速度。最后给出了(2,1,2)卷积码的编码及其Viterbi译码算法的实验仿真结果。FPGA Implementation of Convolutional Code encoding and Viterbi Decoding Algorithm is presented ...
温学东
core
Dynamic filtered keystream generator DF-FCSR-8 [PDF]
, 2012 Based on the investigation of the filtered key stream generator family F-FCSR using feedback with carry shift register(FCSR)as components,especially the reason what makes F-FCSR-Hv2 key stream generator failed,a dynamic filtered generator named DF-FCSR-8
Xiao-hu TANG, Zhen PAN
core
Technical Research on Measurement of Heel of Uranium on Ceramic Surface Using Active Neutron Counting [PDF]
In the uranium research process line，there are still uranium residues on the surface of ceramic parts after cleaning in the process equipment. Quantitative analysis of the heel is the key to nuclear material balance and control.
Fengfei LIU +3 more
core +1 more source
Polynomial estimation method for PN sequence based on reliability accumulation [PDF]
, 2012 The issues of insufficient efficiency and poor error-tolerance of current high-order polynomial estimation me-thods under error conditions were studied.By combining the iterative berlekamp-massey(BM)algorithm in GF(2)and the improved Chase algorithm,a ...
Hua ZHAO, Kai-zhi HUANG, Song CHEN
core
Application of Incremental Associative Classification Method in Malware Detection [PDF]
, 2009 传统关联规则挖掘算法主要基于支持度-可信度构架,时空开销的限制使其无法深入挖掘非频繁项集。目前对带类属性的关联分类增量学习研究较少,该文提出一种新的增量式关联分类方法,解决了带类属性数据的增量学习问题,在数据频繁更新时,实现有限时空开销下关联规则的快速提取和维护。实验结果表明,该方法能有效维护并更新关联规则,避免重复学习历史样本,保证分类模型的预测能力。Traditional associative rule mining algorithm is mostly based on the support-
叶艳芳 +3 more
core
Acoustic temperature measurement of loose coals based on pseudo-random sequences and application research [PDF]
For a long time, spontaneous coal combustion fires in the air mining area, coal pile, coal silo and other spaces occur from time to time, and it is more difficult to realize the rapid quantitative identification of the high temperature point of the ...
Guobin CAI +4 more
core +1 more source
The Application of PLC in Pneumatic Control Electrode Board Cutting Machine [PDF]
, 2003 【中文文摘】本文详细阐述了气动控制系统、光电检测、可编程控制器在气动电极板剪切机中的应用。 【英文文摘】The pneumatic control system,optoelectronic detection system,the application of PLC in pneumatic control electrode board cutting machine was introduced in ...
刘文艳 +3 more
core
FPGA implementation of adaptive code rate QC-LDPC encoder [PDF]
, 2008 准循环低密度奇偶校验码(QC-LDPC codes)相比其他的LDPC码具有简单的编码结构,拥有较好的应用前景。通过构造校验矩阵设计了不同码率和不同帧长的具有系统结构的QC-LDPC码,并分析了这些码的性能,随后将编码过程分阶段引入主从控制模块及复用基本SRAA组,设计了变码率和变帧长的编码器,并用Verilog HDL语言在Spartan 3 3s1500fg676芯片上实现了编码器的设计。综合报告表明:在使用适中的硬件资源情况下,系统最大频率达到了174.856 MHz,能满足高速编码的要求 ...
张文俊, 徐哲鑫, 王琳
core
Design of a CMOS 16 channels constant current output panel driver [PDF]
, 2009 lEd显示屏已经成为各类户外户内的广告宣传展示的首选媒介。lEd以其寿命长,功耗低节能环保的优点,深受照明和显示行业的欢迎。因此,lEd的驱动芯片在市场上也有很大的需求。本文介绍了一种恒流输出大屏幕lEd驱动CMOS芯片的设计,工作电压范围是3.3V-5.5V,工作温度范围是-40℃-125℃。该驱动芯片对恒流输出和各路匹配性进行针对性的设计。以外接电流共同调节16路恒流电流大小,串行数字输入输出分别控制16路使能状态,使能端输入PWM信号,对恒流输出进行脉宽调节。该芯片使用HSPICE软件仿真工具设计,
冯勇建, 胡思静
core