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可编程逻辑 基于CPLD的QDPSK调制解调电路设计
为了在CDMA系统中更好地应用QDPSK数字调制方式，在分析四相相对移相（QDPSK)信号调制解调原理的基础上，设计了一种QDPSK调制解调电路，它包括串并转换、差分编码、四相载波产生和选相、相干解调、差分译码和并串转换电路。在MAX+PLUSⅡ软件平台上，进行了编译和波形仿真。综合后下载到复杂可编程逻辑器件EPM7128SLC84-15中 ...
可编程逻辑 IC封裝製程簡介(IC封装制程简介)
半導體的產品很多，應用的場合非常廣泛，圖一是常見的幾種半導體元件外型。半導體元件一般是以接腳形式或外型來劃分類別，圖一中不同類別的英文縮寫名稱原文為
 
PDID：Plastic Dual Inline Package
SOP：Small Outline Package
SOJ：Small Outline J-Lead Package
PLCC：Plastic Leaded Chip Carrier
QFP：Quad Fla ...
测试测量 LT5528 WCDMA ACPR和AltCPR测量
 
ACPR (adjacent channel power ratio), AltCPR (alternatechannel power ratio), and noise are important performancemetrics for digital communication systems thatuse, for example, WCDMA (wideband code division multipleaccess) modulation. ACPR and AltCPR are bothmeasures of spectral regrowth. T ...
仿真技术 Proteus教程中涉及的基本概念
基本的编辑工具(GENERAL EDITING FACILITIES)
对象放置(Object Placement)
ISIS支持多种类型的对象，每一类型对象的具体作用和功能将在下一章给出。虽然类型不同，但放置对象的基本步骤都是一样的。
放置对象的步骤如下(To place an object:)
1.根据对象的类别在工具箱选择相应模式的图标(mo ...
软件设计/软件工程 如果已经安装好了vobsub
如果已经安装好了vobsub，就可以运用vobsub里面带的字幕提取工具vsrip提取字幕。
打开VobSub程序组,运行vobsub.configure,点击Open来打开vts_01_0.ifo文件(此文件已经拷贝到硬盘上,无需从光盘上找),选定放置字幕文件的子目录,点击确定.提取完成之后会生成Vts_01_0.sub和vts_01_0.idx两个字幕文件,若按照DVDrip的做法是在最 ...
VHDL/FPGA/Verilog VHDL 关于2DFFT设计程序 u scinode1 ∼ scinode9.vhd: Every SCI node RTL vhdl code. The details can be
VHDL 关于2DFFT设计程序
u scinode1 &#8764 scinode9.vhd: Every SCI node RTL vhdl code. The details can be
seen in the following section.
u 2dfft.vhd: The top module includes these scinodes and form a 3x3 SCI Torus
network, and it support these sub-modules scinode1&#8764 scinode9 reset and clk
and glob ...
通讯/手机编程 his folder contains the following files: 1. 02490rxP802-15_SG3a-Channel-Modeling-Subcommittee-Repor
his folder contains the following files:
1. 02490rxP802-15_SG3a-Channel-Modeling-Subcommittee-Report-Final.doc: This is the final
report of the channel modeling sub-committee.
2. cmx_imr.csv (x=1, 2, 3, and 4) represent the files containing the actual 100 channel
realizations for CM1, CM2, CM3, and ...
数据结构 一种基于二维链表的稀疏矩阵模半板类设计 A template Class of sparse matrix. Key technology: bin,2-m linked matrix. con
一种基于二维链表的稀疏矩阵模半板类设计
A template Class of sparse matrix.
Key technology: bin,2-m linked matrix.
constructors: 1.normal constuctor 2.copy constuctor. 3.assignment constructor.
Basic operator: 1. addition(sub) of two matrix
2. inverse of a matrix.
3. multiply of two matrix.
etc ...
系统设计方案 Wavelets have widely been used in many signal and image processing applications. In this paper, a ne
Wavelets have widely been used in many signal and image processing applications. In this paper, a new
serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet
transform, which is realised using some FIFO memory modules implementing a pixel-level ...
matlab例程 Blind Equalizer 的演算法主要是利用CMA及 LMS 的配合
Blind Equalizer 的演算法主要是利用CMA及 LMS 的配合，当CMA将EYE打开，使讯号趋近于正确值，就切换到LMS，利用Slicer的输出当作training sequence来调整Equalizer的系数，而Carrier Recovery 的部份，则是将phase error track出来