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2FSK2psk
- 2FSK2PSK-二进制频移键控和相移键控信号发生器的源程序,是基于QUARTUS II软件平台,使用VHDL语言-2FSK2PSK-binary frequency shift keying and phase shift keying signal generator source, QUARTUS II is based on the software platform, the use of VHDL
用Verilog语言实现QPSK调制
- 用Verilog语言实现QPSK调制,QPSK是一种数字调制方式。它分为绝对相移和相对相移两种。 -Verilog language using QPSK modulation, QPSK is a digital modulation. It is divided into absolute and relative phase shift of the phase shift of two.
BPSK
- 八相移键控调制的Verilog程序,给出了各个子模块的程序,实现了信号调制。-Eight-phase shift keying modulation of the Verilog program, each module is given the procedures, the signal modulation.
32_16div
- 这是一个简单的除法器(32bit/16bit),采用移位相减法-This is a simple divider (32bit/16bit), using phase shift subtraction
psk
- 应用verilog语言编写实现二元相移键控调制过程-Application verilog language to achieve binary phase shift keying modulation
DDR_SDRAM_controller
- DDR SDRAM控制器的VHDL源代码,含详细设计文档。 The DDR, DCM, and SelectI/O™ features in the Virtex™ -II architecture make it the perfect choice for implementing a controller of a Double Data Rate (DDR) SDRAM. The Digital Clock Manager (DCM) provides t
dds_easy
- 直接频率合成DDS模块的ise工程,可以直接下载,在Spartan3/Spartan3E上验证通过。该DDS模块可以产生双通道的不同频率的正弦波,也可以产生同频的任意相位差的相移波形。本模块累加器位数为32位,可以产生12位相位精度12位量化精度的正弦波。该设计例化一个Block Ram,为节省储存空间仅需要储存1/4周期的数据。根据需要,可以重新修改数据,改变波形。-DDS direct frequency synthesizer module ,ise project, can be dir
SIG_1KHz
- 任意移相方波信号产生的VHDL代码。输入任意一个的相位偏移值就都能产生与参考方波有指定相位差的同频信号。-Square-wave signal of arbitrary phase shift generated by VHDL code. Enter any one of the phase offset can be generated on a designated phase with the reference square wave signal the same frequency
cpsk_dpsk
- 数字通信系统相移键控CPSK信号和差分相移键控的调制与解调的VHDL代码-Phase shift keying digital communication system CPSK signals and differential phase-shift keying modulation and demodulation of the VHDL code for
10512210247008
- 该数字式相位测量仪以单片机 (89c52) 为核心 , 通过高速计数器 CD4040 为计数器计算脉冲个数从 , 而达到计算相位的要求 , 通过 8279 驱动数码管显示正弦波的频率,不采用一般的模拟的振动器产生 , 而是采用单片机产生 , 从而实现了产生到显示的数字化 . 具有产生的频率精确 , 稳定的特点 . 相移部分采用一般的 RC 移相电路 , 节省了成本。-The digital phase-measuring instrument in order to microcontrolle
psk_de
- 应用verilog语言编写实现二元相移键控解调过程。-Application verilog language to achieve binary phase shift keying demodulation.
Universal_Asynchronous_Receiver-Transmitter
- 可以实现二进制振幅键控、二进制频移键控和二进制相位键控的解调和调制功能。-Can achieve binary amplitude shift keying, binary frequency shift keying and binary phase shift keying demodulation and modulation functions.
sdram
- 通过 UART 读写 SDRAM verilog 源代码 通过 UART 的接口发送命令来读写 SDRAM 命令格式如下: 00 02 0011 1111 2222 00: 写数据 02: 写个数 0011: 写地址 1111 2222: 写数据, 是 16 bit, 每写完一个数据,向串口发送 FF 回应; 输出: FF FF 01 03 0044 01: 读sdram 03: 读的个数 0044: 读的地址 输出: xxxx xx
cotas
- Costas环是用来解调双边带抑制载波信号的,也是二相或四相移相键控信号解调的专用环路-Costas loop is used to double sideband suppressed carrier signal demodulation, and also two-phase or four phase shift keying signal demodulation of the special loop
phaseconrol
- 将10Khz的输入信号经过分频得到两路互补的方波信号,方波信号的频率由分频计数初值决定。然后将分频后的方波进行移相,从而得到另外两路方波信号,移相的大小也由计数器的的初值决定。-After the 10Khz frequency input signals are two complementary square wave signals, square wave signal frequency by a frequency count of initial decision. And the
dds
- 基于fpga的数字移相信号发生器,本文设计的数字相移信号发生器以直接数字频率合成(DDS)技术为核心,用现场可编程门阵列(FPGA)来实现频率和相位的预置和改变,并完成信号的频率和相位差显示。设计中采用的是直接数字频率合成(DDS)技术-Fpga-based Digital Signal Generator shift, the paper design of digital phase-shift signal generator for direct digital frequency sy
DDS_PHASE
- 基于DDS BUILDER和VHDL写的数字移相信号源,经DA实测760Hz波形良好,手里没有高速DA,未能继续测试。仅供参考-DDS BUILDER and VHDL-based digital phase shift number written sources, 760Hz waveform measured by the DA good hands there is no high-speed DA, unable to continue testing. Reference
Measured-phase-shift-FPGA
- 数字频率计是用于测量信号频率的电路。测量信号的频率参数是最常用的测量方法之一。实现频率测量的方法比较多, 在此我们主要介绍三种常用的方法: 时间门限测量法、标准频率比较测量法、等精度测量法-Digital frequency meter is used to measure the frequency of the circuit. Measuring signal frequency parameter is the most common measurement methods. The m
ocs-dpsk
- 利用目前最顶级光通信仿真软件VPI平台,此程序可以仿真实现在光载射频系统中的抑制载波差分相移调制(OCS-DPSK)调制格式-Optical communications using the most top VPI simulation software platform, this program can be simulated to achieve the optical carrier suppressed-carrier RF systems in the differential
FPGA_phase-shift
- 本文介绍基于FPGA和DDFS技术,应用Altera公司的FPGA开发工具DSP Builder设计数字移相信号发生器,该数字移相信号发生器的频率、相位、幅度均可预置,分辨率高,精确可调。-This paper introduces FPGA and DDFS technology based on FPGA development tools DSP Builder design of digital phase shift signal generator using Altera, fre
